Co-reporter:Zhiming Chen, Bo Xu, Xiaomei Wang, Li Zhang, Xiaoqing Yang, Cuncheng Li
Catalysis Communications 2017 Volume 102(Volume 102) pp:
Publication Date(Web):1 December 2017
DOI:10.1016/j.catcom.2017.08.015
•Sandwich-like MIL-100(Fe)@Pt@MIL-100(Fe) nanoparticles were prepared by a simple method.•The nanoparticles show high catalytic activity and stability.•Synergistic effect can be accounted for the superiority of the nanoparticles.Separation and recycling of noble metal nanoparticles after catalytic reaction is critical to promote its application efficiency and cut down the cost. This work presents a facile synthesis strategy for the fabrication of sandwich-like MIL-100(Fe)@Pt@MIL-100(Fe) (denoted as S-Pt) nanoparticles with high stability and improved catalytic activity for hydrogenation of nitrophenol. MIL-100(Fe) acts as both carrier to make the catalyst easily separated and shield to protect the tiny Pt nanoparticles from leaching or aggregation during reaction. Moreover, mass transfer effect of the porous MIL-100(Fe) with its pore structure serving as nano-reactor is also benefit for promoting the catalytic efficiency.Download high-res image (197KB)Download full-size image
Co-reporter:Bo Xu, Zhiming Chen, Bing Han, Cuncheng Li
Catalysis Communications 2017 Volume 98(Volume 98) pp:
Publication Date(Web):10 July 2017
DOI:10.1016/j.catcom.2017.04.041
•Nanoscale MIL-100(Fe) particles were synthesized using glycol for the first time.•The MIL-100(Fe) nanospheres show uniform size and morphology.•The nanospheres exhibit good photocatalytic property for oxidation of benzene to phenol.This work presents MIL-100(Fe) nanoparticles synthesized using glycol with uniform size and morphology. This is the first report of nanoscale MOFs material synthesized using glycol. The MIL-100(Fe) particles have been characterized by SEM, TEM, XRD and the results indicate that the MOFs particles show monodispersed nanospherical morphology. Photocatalytic study reveals that the MIL-100(Fe) nanospheres exhibit good oxidation ability of benzene to phenol under visible light irradiation with high selectivity.
Co-reporter:Bo Xu, He Yang, Lincheng Yuan, Yiqiang Sun, Zhiming Chen, Cuncheng Li
Journal of Power Sources 2017 Volume 366(Volume 366) pp:
Publication Date(Web):31 October 2017
DOI:10.1016/j.jpowsour.2017.09.018
•NiFeSe/C nanorod was obtained by selenylation of Ni/Fe metal-organic framework.•The nanorods can catalyze both H2 and O2 evolution showing bifunctionality.•The nanorods show high activity and stability for overall water splitting.Development of low-cost, highly active bifunctional catalyst for efficient overall water splitting based on earth-abundant metals is still a great challenging task. In this work, we report a NiFe-Se/C composite nanorod as efficient non-precious-metal electrochemical catalyst derived from direct selenylation of a mixed Ni/Fe metal-organic framework. The as-obtained catalyst requires low overpotential to drive 10 mA cm−2 for HER (160 mV) and OER (240 mV) in 1.0 M KOH, respectively, and its catalytic activity is maintained for at least 20 h. Moreover, water electrolysis using this catalyst achieves high water splitting current density of 10 mA cm−2 at cell voltage of 1.68 V.
Co-reporter:Bo Xu, Zhiming Chen, Haijing Zhang, Yiqiang Sun, Cuncheng Li
International Journal of Hydrogen Energy 2017 Volume 42, Issue 51(Volume 42, Issue 51) pp:
Publication Date(Web):21 December 2017
DOI:10.1016/j.ijhydene.2017.10.081
•Ternary Ni(S0.41Se0.59)2 porous flakes array on carbon fiber cloth was developed.•The catalyst shows unique structure with high surface area and abundant active sites.•The catalyst exhibits excellent catalytic performance for HER.Development of efficient catalyst with low-cost, earth-abundant metals for sustainable hydrogen generation is still an intriguing challenge. Doping of cation or anion is regarded as an effective approach for ingenious modulation of chemical composition related to the electrocatalysts for improving their activity. Herein, a ternary Ni(S0.49Se0.51)2 porous flakes array on carbon fiber cloth (CFC) via simultaneous sulfuration and selenylation of Ni(OH)2 flakes. Owing to the synergistic effect between Ni, S and Se atoms, high surface area, abundant active site and good conductivity of the Ni(S0.49Se0.51)2/CFC, the as-synthesized catalyst requires lower overpotential (113 mV) than pure NiS2/CFC and NiSe2/CFC to drive 10 mA cm−2 for hydrogen evolution reaction (HER) in 1.0 M KOH with good sustainability.
Co-reporter:Yiqiang Sun, Yugang Sun, Tao Zhang, Guozhu Chen, Fengshou Zhang, Dilong Liu, Weiping Cai, Yue Li, Xianfeng Yang and Cuncheng Li
Nanoscale 2016 vol. 8(Issue 20) pp:10774-10782
Publication Date(Web):23 Mar 2016
DOI:10.1039/C6NR00933F
Nanostructured ZnO exhibits high chemical stability and unique optical properties, representing a promising candidate among photocatalysts in the field of environmental remediation and solar energy conversion. However, ZnO only absorbs the UV light, which accounts for less than 5% of total solar irradiation, significantly limiting its applications. In this article, we report a facile and efficient approach to overcome the poor wettability between ZnO and Au by carefully modulating the surface charge density on Au nanoparticles (NPs), enabling rapid synthesis of Au@ZnO core–shell NPs at room temperature. The resulting Au@ZnO core–shell NPs exhibit a significantly enhanced plasmonic absorption in the visible range due to the Au NP cores. They also show a significantly improved photocatalytic performance in comparison with their single-component counterparts, i.e., the Au NPs and ZnO NPs. Moreover, the high catalytic activity of the as-synthesized Au@ZnO core–shell NPs can be maintained even after many cycles of photocatalytic reaction. Our results shed light on the fact that the Au@ZnO core–shell NPs represent a promising class of candidates for applications in plasmonics, surface-enhanced spectroscopy, light harvest devices, solar energy conversion, and degradation of organic pollutants.
Co-reporter:Bo Xu, He Yang, Yong Cai, Hongxun Yang, Cuncheng Li
Inorganic Chemistry Communications 2016 Volume 67() pp:29-31
Publication Date(Web):May 2016
DOI:10.1016/j.inoche.2016.03.003
•Spindle-like MIL-88B(Fe) nanoparticles were synthesized.•The particles show uniform size and morphology.•MIL-88B(Fe) particles show excellent photocatalytic property for degradation of dyes.Iron(III) based nanoparticles MIL-88B(Fe) with spindle-like morphology were synthesized by a facile method. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) revealed that the MIL-88B(Fe) nanoparticles had an uniform size of about 385 nm in length and 195 nm in width. The obtained nanoparticles were further characterized by powder X-ray diffraction (XRD) and ultraviolet-visible spectroscopy (UV–vis). Moreover, as MIL-88B(Fe) shows obvious adsorption in the visible region, it has good degradation activity for methylene blue (MB) and rhodamine B (RB) dye under visible light.MIL-88B(Fe) particles with spindle-like morphology were synthesized and showing good degradation activity for methylene blue and rhodamine B dye.
Co-reporter:Xuejiao Li, Fangfang Wang, He Yang, Bo Xu, Cuncheng Li
Journal of Molecular Structure 2016 Volume 1118() pp:105-109
Publication Date(Web):15 August 2016
DOI:10.1016/j.molstruc.2016.03.102
•A new In(III)-based complex was synthesized under hydrothermal condition.•Complex 1 presents a 2D porous (6, 3) layer structure.•The complex show tunable luminescence.A new Indium coordination polymer [In(pda)1.5(phen)]n1 based on 1,4-phenylenediacetic acid (H2pda) and phen = 1,10-phenanthroline was obtained under hydrothermal condition and further characterized by single crystal X-ray analysis and other physicochemical studies such as infrared spectrum (IR), elemental analysis, thermogravimetric analysis (TGA) and powder X-ray diffraction (PXRD). Structure analysis reveals that complex 1 exhibits 2D porous (6,3) connected layer structure. Luminescent property of 1 was investigated both in the solid state and in different solvents and the results indicated that complex 1 demonstrates distinct solvent dependent luminescent property.
Co-reporter:Jie Li, Bo Xu, Guangning Liu, Guozhu Chen, Tao Zhang, Fengshou Zhang, Cuncheng Li
Progress in Natural Science: Materials International 2016 Volume 26(Issue 3) pp:295-302
Publication Date(Web):June 2016
DOI:10.1016/j.pnsc.2016.05.013
In this study, an effective wet-chemical route was developed in an aqueous solution for the synthesis of spindle-like palladium nanoparticles (Pd NPs). Spindle-like Pd NPs in high-yield were successfully synthesized by using cetyltrimethylammonium chloride (CTAC) as surfactant and ascorbic acid (AA) as reduction reagent. The influence factors including the concentration of CTAC, AA, and NaI, as well as the reaction temperature for synthesis of spindle-like Pd NPs were systematically investigated. The formation mechanism of spindle-like Pd NPs was proposed on the basis of these experimental results. Spindle-like Pd NPs with high density of twins and sharp edges exhibit enhanced catalytic activities for the reduction of 4-nitrophenol.
Co-reporter:Guang-Ning Liu, Ming-Jian Zhang, Wan-Qing Liu, Hui Sun, Xin-Yu Li, Ke Li, Cai-Ze Ren, Zhen-Wei Zhang and Cuncheng Li
Dalton Transactions 2015 vol. 44(Issue 43) pp:18882-18892
Publication Date(Web):30 Sep 2015
DOI:10.1039/C5DT02374B
Two novel metal–organic frameworks (MOFs) [Cd3(padc)(Hpadc)(H2padc)(H2O)]n·nH2O (1, H3padc = pyrazole-3,5-dicarboxylic acid) and [Co4(pidc)2(Hpidc)4(H2O)3]n·12nH2O (2, H2pidc = pyridine-2,5-dicarboxylic acid), that both crystallize in polar space groups, were solvothermally synthesized by using achiral N,O-coordinated ligands. Compound 1 consists of trinuclear Cd(II)-based units that are further bridged by the backbone of H3padc ligands to form a three-dimensional (3-D) (4,6)-connected fsc topology network, while compound 2 features two types of double-helical tubes with different chiralities connecting with each other alternatively to construct a typical 2-D (3,6)-connected kgd topology network. Importantly, 1 exhibits combined properties of photoluminescence (PL) and second harmonic generation (SHG), and represents the first noncentrosymmetric H3padc-based MOF that was obtained without any ancillary ligands. While 2 shows strong antiferromagnetic interactions between paramagnetic Co(II) centers, and the aqueous solution of 2 exhibits effective homogeneous photocatalysis properties under visible irradiation. Further, the mechanisms of the physical properties of 1 and 2 are discussed in detail.
Co-reporter:Guang-Ning Liu, Jian-Ru Shi, Xiao-Jiang Han, Xiao Zhang, Ke Li, Jie Li, Tao Zhang, Qi-Sheng Liu, Zhen-Wei Zhang and Cuncheng Li
Dalton Transactions 2015 vol. 44(Issue 28) pp:12561-12575
Publication Date(Web):27 Apr 2015
DOI:10.1039/C5DT00687B
The introduction of the aliphatic amines en (ethylenediamine), aep (N-(2-aminoethyl)piperazine) and tepa (tetraethylenepentamine), and the aromatic species 2,2′-bipy (2,2′-bipyridine) and dpe (1,2-di(4-pyridyl)ethylene) as structure directing agents (SDAs) into inorganic iodoplumbates affords six hybrids, namely [(Hen)4(H2.5O)2I](PbI6) (1), Cs2n[Pb3I8(en)2]n (2), (H3tepa)n(PbI5)n (3), (H2aep)n(PbI4)n (4), (Et22,2′-bipy)n(Pb2I6)n (5) and (Et2dpe)n(Pb2I6)n (6). 1 contains a discrete octahedral (PbI6)4− anion generated under the direction of a novel co-template, [(Hen)4(H2.5O)2I]4+. 2 contains inorganic Cs+ ions and a novel hybrid anionic layer [Pb3I8(en)2]n2n− that has never been encountered in iodoplumbate hybrids. 3 features a zigzag (PbI5)3− chain with the charge being compensated by a triprotonated tepa cation. 4 is composed of perovskite sheets of lead(II) octahedra and aep cations that are generated from tepa via an unprecedented in situ ligand reaction. Both 5 and 6 have (Pb2I6)n2n− chains and represent the first example of introducing a 2,2′-bipy or dpe derivative cation in iodoplumbate hybrids, respectively. The comparative study reveals that aliphatic amines and aromatic species contribute differently to the crystal and electronic structures, and the properties of the hybrids. Importantly, 1–4 exhibit interesting water induced structure conversions, while 5 and 6 can be used as heterogeneous photocatalysts for dye wastewater treatment under visible light irradiation.
Co-reporter:Guang-Ning Liu;Le-Le Liu;Ya-Nan Chu;Yi-Qiang Sun;Zhen-Wei Zhang
European Journal of Inorganic Chemistry 2015 Volume 2015( Issue 3) pp:478-487
Publication Date(Web):
DOI:10.1002/ejic.201402919
Abstract
Three new hybrid iodoargentates (H2pipe)0.5(α-AgI2) (1), (Me2teda)0.5(α-AgI2) (2), and (H2dpe)0.5(β-AgI2) (3) have been synthesized under solvothermal conditions, whereby the aliphatic organic cations (H2pipe)2+ and (Me2teda)2+ (pipe = piperazine, teda = triethylenediamine) and the conjugated organic cation (H2dpe)2+ [dpe = 1,2-di(4-pyridyl)ethylene] exhibit different contributions to both the crystal and electronic structures. The (H2pipe)2+ and (Me2teda)2+ cations direct the formation of α-type (AgI2)– polyanionic chains and influence the bandgaps of 1 and 2 indirectly by modulating the iodoargentate anionic structures. By contrast, the (H2dpe)2+ cation directs the formation of a novel β-type (AgI2)– chain and changes the bandgap of 3 directly to make up the bottom of the conduction band. From 1 and 2 to 3, a direct to indirect bandgap transformation and reduced bandgap can be observed (3.74, 2.88, and 1.99 eV for 1–3, respectively). Relative to the bandgap of bulk AgI2, the bandgaps of 1 and 2 show a blueshift as a result of the quantum confinement effect, whereas the bandgap of 3 shows a redshift owing to the direct participation of the conjugated cation (H2dpe)2+ in adjusting the bandgap.
Co-reporter:Bo Xu, Zhiming Chen, Pengfei Zhi, Guangning Liu, Cuncheng Li
Inorganic Chemistry Communications 2015 Volume 52() pp:9-11
Publication Date(Web):February 2015
DOI:10.1016/j.inoche.2014.12.006
•A new Cu(II)-based complex was synthesized under hydrothermal condition.•Complex 1 presents a 3D network with jsm topology.•Complex 1 shows interesting degradation ability over methyl blue.A new coordination polymer [Cu(mip)(bpy)0.5]n (1) was obtained through reaction of 5-methylisophthalic acid (H2mip) and 4,4′-bipyridine (bpy) with copper nitrate under hydrothermal condition. X-ray single crystal diffraction analysis reveals that complex 1 exhibits a 3D network with jsm topology. Photocatalytic activity of the complex has also been characterized. Notably, complex 1 represents the rare example of visible-light-driven photocatalyst based on coordination polymer and shows good degradation ability over methylene blue (MB).A new Cu(II)-based coordination polymer exhibiting a 3D network with jsm topology and showing interesting degradation ability over methyl blue is reported.
Co-reporter:Guang-Ning Liu, Wen-Juan Zhu, Ya-Nan Chu, Cuncheng Li
Inorganica Chimica Acta 2015 Volume 425() pp:28-35
Publication Date(Web):30 January 2015
DOI:10.1016/j.ica.2014.10.024
•1–3 serve as examples of mixed-ligands complexes to study their photoluminescence.•DFT calculations were performed to clarify their photoluminescence mechanisms.•1 features an extended architecture constructed by Hpac− ligand.•The Hpac− or pac2− ligands in 1–3 display three different coordination modes.Solvothermal reaction of pyrazole-3-carboxylic acid (H2pac) and different d10 metal salt with or without auxiliary organic ligand afforded three new coordination compounds: [Cd(Hpac)(H2O)Cl]n (1), [Cd(Hpac)(phen)2]ClO4 (2, phen = 1,10-phenanthroline) and [Zn(pac)(2,2′-bipy)(H2O)]2·2H2O (3, 2,2′-bipy = 2,2′-bipyridine). Compounds 1–3 all feature mixed-ligand characteristic. 1 consists of a two-dimensional (2-D) layer structure containing (4,4) networks. 2 is composed of a mononuclear [Cd(Hpac)(phen)2]+ cation and a perchlorate anion. 3 contains a binuclear [Zn(pac)(2,2′-bipy)(H2O)]2 cluster and water molecules. Through abundant hydrogen bonds and/or offset π⋯π stacking interactions, the molecules of 2 and 3 assemble into 2-D and 3-D supramolecular frameworks, respectively. The Hpac− or pac2− ligands in 1–3 display three different coordination modes. Photoluminescence studies in the solid state reveal that 1–3 exhibit interesting luminescent behaviors, and the relevant density of states (DOS) calculation results show that their photoluminescence mainly originates from the Hpac− ligand-centered charge transition mixing with Cl−–Hpac− charge transition for 1, mixed organic ligand–organic ligand charge transition and ClO4−–phen charge transition for 2, and mixed organic ligand–organic ligand charge transition for 3.Graphical abstractReported here are the syntheses, structures and photoluminescence of three pyrazole-3-carboxylic acid-based d10 metal coordination compounds with mixed-ligand characteristic. DFT calculations were performed to make clear their photoluminescence mechanisms.
Co-reporter:Dilong Liu;Dr. Fei Zhou;Tao Zhang;Honghua Zhang; Weiping Cai; Yue Li
Angewandte Chemie International Edition 2015 Volume 54( Issue 33) pp:9596-9600
Publication Date(Web):
DOI:10.1002/anie.201503384
Abstract
A facile approach for the fabrication of novel black plasmonic colloidosomes assembled from Au nanospheres is developed by an emulsion-templating strategy. This self-assembly process is based on a new reverse water-in-1-butanol emulsion system, in which the water emulsion droplets can dissolve into 1-butanol (oil) phase at an appropriate rate. These Au colloidosomes possess hexagonal close-packed multilayer shells and show a low reflectivity and intense broadband absorption owing to the strong interparticle plasmonic coupling, which is further investigated by a finite-difference time-domain method. This method is universal and is suitable for self-assembly of different noble-metal nanoparticles into different colloidosomes. These colloidosomes have important applications in photothermal therapy, biosensors, and drug delivery.
Co-reporter:Dilong Liu;Dr. Fei Zhou;Tao Zhang;Honghua Zhang; Weiping Cai; Yue Li
Angewandte Chemie 2015 Volume 127( Issue 33) pp:9732-9736
Publication Date(Web):
DOI:10.1002/ange.201503384
Abstract
A facile approach for the fabrication of novel black plasmonic colloidosomes assembled from Au nanospheres is developed by an emulsion-templating strategy. This self-assembly process is based on a new reverse water-in-1-butanol emulsion system, in which the water emulsion droplets can dissolve into 1-butanol (oil) phase at an appropriate rate. These Au colloidosomes possess hexagonal close-packed multilayer shells and show a low reflectivity and intense broadband absorption owing to the strong interparticle plasmonic coupling, which is further investigated by a finite-difference time-domain method. This method is universal and is suitable for self-assembly of different noble-metal nanoparticles into different colloidosomes. These colloidosomes have important applications in photothermal therapy, biosensors, and drug delivery.
Co-reporter:Bo Xu, Yi-Qiang Sun, Jie Li and Cun-Cheng Li
RSC Advances 2014 vol. 4(Issue 49) pp:25588-25595
Publication Date(Web):02 Jun 2014
DOI:10.1039/C4RA03569K
By using 5-tert-butylisophthalic acid (H2tbip) and N,N′-bis-(4-pyridylmethyl) piperazine (bpmp), three coordination polymers formulated as {[Co(bpmp)(tbip)]·H2O}n (1), {[Ni(bpmp)1.5(tbip)(H2O)]·H2O}n (2), and {[Cd(bpmp)1.5(tbip)]·3H2O}n (3) have been synthesized under hydrothermal conditions. All complexes were characterized by single crystal X-ray diffraction analysis, powder X-ray diffraction analysis, elemental analysis, infrared spectroscopy and thermogravimetric analysis. The results show that complex 1 presents a 3D 6-connected network. Complex 2 shows a three-fold interpenetrating framework based on subunits with {46.64}-bnn hexagonal BN topology while complex 3 shows a 2D → 3D polycatenation framework containing 2D bilayer motifs as the fundamental building units. The photocatalytic properties of complexes 1 and 2 have been evaluated and the results show that they are active as a catalyst for the decomposition of Rhodamine B under visible light. The photoluminescence properties of complex 3 were also assessed in the solid state at room temperature.
Co-reporter:Bo Xu, Qing-Shan Liang, Lian-Tao Liu, Qi-Sheng Liu and Cun-Cheng Li
RSC Advances 2014 vol. 4(Issue 27) pp:13919-13926
Publication Date(Web):05 Mar 2014
DOI:10.1039/C4RA00163J
Four coordination polymers associated with 1,3-bis-(4-pyridyl) propane (bpp) and 5-methylisophthalic acid (H2mip) or 5-nitroisophthalic acid (H2nip) formulated as [Zn(bpp)(mip)]n (1), [Co(bpp)(mip)]n (2), [Zn2(bpp)2(nip)2]n (3) and [Co(bpp)(nip)(H2O)]n (4) have been synthesized under hydrothermal conditions. Single crystal analyses reveal that complex 1 presents a four-fold interpenetrating framework based on three-dimensional (3D) subunits with dia topology. Compound 2 has a 1D binuclear chain structure. Complex 3 shows 2D 44-sql layer structure packing in ABAB mode. Complex 4 exhibits a two-fold interpenetrating framework based on three-dimensional (3D) subunits with dia topology. These compounds have been characterized by infrared spectroscopy, elemental analysis, thermogravimetric analysis and powder X-ray diffraction. In addition, the photoluminescence of 1 and 3 and magnetic properties of 2 and 4 were investigated.
Co-reporter:Bo Xu, Jie Li, Nana Kong, Cuncheng Li
Inorganic Chemistry Communications 2014 Volume 47() pp:119-122
Publication Date(Web):September 2014
DOI:10.1016/j.inoche.2014.07.016
•Two polycatenated Ni(II) coordination polymers are synthesized.•The two complexes show interesting polycatenated structures.•Magnetic properties have been investigated.Two nickel coordination polymers formulated as [Ni2(bpe)3(nip)2]n (1) and {[Ni(bpmp)(nip)(H2O)]·3H2O}n (2) (where H2nip = 5-nitroisophthalic acid, bpe = 1,2-bis-(4-pyridyl) ethane and bpmp = N,N′-bis-(4-pyridyl-methyl) piperazine) have been synthesized under hydrothermal condition. Single crystal X-ray diffraction analyses reveal that complex 1 presents a novel three-dimensional (3D) parallel polycatenated framework assembled from two-dimensional bilayers with cuboids as the fundamental building units. Compound 2 shows unusual 2D → 3D inclined polycatenated framework consisting of two sets of equivalent 2D sql layers. The compounds have also been characterized by infrared spectra, elemental analysis, thermogravimetric analysis and powder X-ray diffraction. Magnetic studies reveal that these two compounds show similar antiferromagnetic interaction between Ni(II) ions.Crystal structures and magnetic properties of two novel Ni(II) complexes with interesting 3D parallel polycatenated framework containing two-dimensional bilayers or 2D → 3D inclined polycatenated structure consisting of 2D sql layers are reported.
Co-reporter:Bo Xu, Yong Cai, Ling Li, Zhenwei Zhang, Cuncheng Li
Journal of Molecular Structure 2014 Volume 1059() pp:320-324
Publication Date(Web):5 February 2014
DOI:10.1016/j.molstruc.2013.12.011
•Two heterometallic complexes have been synthesized and characterized.•Complex 1 shows a two-dimensional bilayer structure containing (3,6) networks.•Complex 2 holds a three-dimensional heterometallic framework.•The fluorescence spectra of the complexes have also been investigated.Two new heterometallic coordination polymers: [Pb2Zn(btc)2(H2O)6] (1), [Pb2Cd(btc)2(H2O)2]·2H2O (2) (H3btc = 1,3,5-benzenetricarboxylic acid) have been synthesized under hydrothermal condition and characterized by elemental analysis, IR, PXRD and single crystal X-ray diffraction. Complex 1 crystallizes in the triclinic space group P-1, showing a two-dimensional (2D) bilayer structure containing (3,6) networks with the binuclear [Pb2O8] units acting as six-connected nodes. Complex 2 crystallizes in the monoclinic space group P21/a and features a heterometallic 3D framework. Solid state emission spectra of both the two compounds have also been studied at room temperature.
Co-reporter:Bo Xu, Xiaoxiao Ji, Yong Cai, Ling Li, Guangning Liu, Cuncheng Li
Journal of Molecular Structure 2014 Volumes 1056–1057() pp:52-55
Publication Date(Web):6 January 2014
DOI:10.1016/j.molstruc.2013.10.031
•A complex constructed from 5-methyisophthalic acid and 1,2-bis-(4-pyridyl) ethane ligands has been synthesized and characterized.•X-ray diffraction analysis indicates that complex 1 shows a threefold interpenetrating network based on dmp units (a 3D uninodal 4-connected net with the Schläfli symbol of (65.8)).•The fluorescence spectrum of the compound has also been investigated.A zinc(II) coordination complex [Zn(bpe)(mip)]·H2O (1), (H2 methylisophthalic acid, bpe = 1,2-bis-(4-pyridyl) ethane) has been synthesized and structurally characterized. Analysis of the structure by single-crystal X-ray reveals that the complex 1 presents a three-dimensional (3D) threefold interpenetrating network based on dmp units (a 3D uninodal 4-connected net with the Schläfli symbol of (65.8)). The compound has been characterized by infrared spectroscopy, elemental analysis, thermogravimetric analysis and powder X-ray diffraction. Solid state emission spectrum of the compound has also been studied at room temperature.
Co-reporter:Qisheng Liu, Cuncheng Li, Kejian Jiang, Yanlin Song, Jian Pei
Particuology 2014 Volume 15() pp:71-76
Publication Date(Web):August 2014
DOI:10.1016/j.partic.2012.12.005
Poly(3-hexylthiophene) (P3HT) was used in a solid-state dye-sensitized solar cell (S-DSC) with a broad-absorption metal-free organic dye sensitizer 1,2,4,5-benzenetetracarboxylic acid (BzTCA). Under full-sunlight irradiation (AM 1.5 G, 100 mW/cm2), an overall conversion efficiency of 3.21% was achieved, which represents one of the highest efficiencies reported in an S-DSC. Our results indicate that the P3HT polymer is a promising material as both a hole conductor and an assistant sensitizer in the fabrication of solid-state DSCs.Graphical abstractSolid-state dye-sensitized solar cell and I–V characteristic in the device.Highlights► A high-performance solid-state dye-sensitized solar cell (S-DSC) was fabricated. ► Poly(3-hexylthiophene) functions as effective hole transport material and assistant sensitizer. ► Broader absorption metal-free organic dye (BzTCA) was introduced to optimize the S-DSC efficiency.
Co-reporter:Bo Xu, Senwen Yuan, Xiutao Zhang, Cuncheng Li
Journal of Molecular Structure 2014 1068() pp: 53-57
Publication Date(Web):25 June 2014
DOI:10.1016/j.molstruc.2014.03.058
•A Yb(III)–Zn(II) heterometallic complex was synthesized.•Complex 1 presents a three-fold 1D pseudo-nanotube architectures.•Photoluminescence property of the complex has also been investigated.A heterometallic coordination polymer formulated as [YbZn(btc)(OH)2(H2O)]·H2O (1), where H3btc = 1,3,5-benzenetricarboxylic acid has been synthesized under hydrothermal condition. Single crystal analysis reveals that complex 1 presents a three-dimensional (3D) structure containing three-fold 1D pseudo-nanotube architectures. The complex has also been characterized by IR, PXRD, TG and elemental analysis. Moreover, solid-state photoluminescence property of the complex has also been investigated at room temperature.
Co-reporter:Cuncheng Li, Lin Sun, Yiqiang Sun, and Toshiharu Teranishi
Chemistry of Materials 2013 Volume 25(Issue 13) pp:2580
Publication Date(Web):June 18, 2013
DOI:10.1021/cm400392e
It generally requires a complex workup procedure for the fabrication of Au@Ag heterogeneous nanostructures with an accurate morphology by the present multistep seed-mediated growth approaches. In this paper, we present a new and straightforward method for the controllable synthesis of uniform Au@Ag heterogeneous nanorods (NRs) by coreduction of gold and silver sources in a one-pot polyol reaction. High-quality Au@Ag heterogeneous NRs of various aspect ratios were facilely and selectively produced in high concentration by tuning the initial experimental parameters. Our synthetic approach is highlighted by its simplicity, large-scale production, and controllability of the synthesis. Our study indicates the oxidative etching by O2/Cl– pairs plays a key role for the high-yield synthesis of uniform Au@Ag heterogeneous NRs. The size-dependent optical properties of Au@Ag heterogeneous NRs were first and systematically investigated. Our experiments reveal that Au@Ag heterogeneous NRs exhibit two strong absorption peaks that, respectively, originate from the transverse and longitudinal localized surface plasmon resonances (LSPRs). Moreover, the longitudinal LSPR can be facilely tuned from the visible to the near-infrared regions by changing the aspect ratio of Au@Ag heterogeneous NRs. Importantly, Au@Ag heterogeneous NRs synthesized by our method have an excellent stability. They can maintain their optical properties over a long period of time. Au@Ag heterogeneous NRs with an interesting plasmonic property would have fascinating application in surface plasmonics, surface-enhanced Raman scattering, chemical and biological sensing, optical labeling, and information storage.Keywords: gold; heterogeneous nanorods; polyol synthesis; silver; surface plasmon resonance;
Co-reporter:Guang-Ning Liu, Ming-Jian Zhang, Wan-Qing Liu, Hui Sun, Xin-Yu Li, Ke Li, Cai-Ze Ren, Zhen-Wei Zhang and Cuncheng Li
Dalton Transactions 2015 - vol. 44(Issue 43) pp:NaN18892-18892
Publication Date(Web):2015/09/30
DOI:10.1039/C5DT02374B
Two novel metal–organic frameworks (MOFs) [Cd3(padc)(Hpadc)(H2padc)(H2O)]n·nH2O (1, H3padc = pyrazole-3,5-dicarboxylic acid) and [Co4(pidc)2(Hpidc)4(H2O)3]n·12nH2O (2, H2pidc = pyridine-2,5-dicarboxylic acid), that both crystallize in polar space groups, were solvothermally synthesized by using achiral N,O-coordinated ligands. Compound 1 consists of trinuclear Cd(II)-based units that are further bridged by the backbone of H3padc ligands to form a three-dimensional (3-D) (4,6)-connected fsc topology network, while compound 2 features two types of double-helical tubes with different chiralities connecting with each other alternatively to construct a typical 2-D (3,6)-connected kgd topology network. Importantly, 1 exhibits combined properties of photoluminescence (PL) and second harmonic generation (SHG), and represents the first noncentrosymmetric H3padc-based MOF that was obtained without any ancillary ligands. While 2 shows strong antiferromagnetic interactions between paramagnetic Co(II) centers, and the aqueous solution of 2 exhibits effective homogeneous photocatalysis properties under visible irradiation. Further, the mechanisms of the physical properties of 1 and 2 are discussed in detail.
Co-reporter:Guang-Ning Liu, Jian-Ru Shi, Xiao-Jiang Han, Xiao Zhang, Ke Li, Jie Li, Tao Zhang, Qi-Sheng Liu, Zhen-Wei Zhang and Cuncheng Li
Dalton Transactions 2015 - vol. 44(Issue 28) pp:NaN12575-12575
Publication Date(Web):2015/04/27
DOI:10.1039/C5DT00687B
The introduction of the aliphatic amines en (ethylenediamine), aep (N-(2-aminoethyl)piperazine) and tepa (tetraethylenepentamine), and the aromatic species 2,2′-bipy (2,2′-bipyridine) and dpe (1,2-di(4-pyridyl)ethylene) as structure directing agents (SDAs) into inorganic iodoplumbates affords six hybrids, namely [(Hen)4(H2.5O)2I](PbI6) (1), Cs2n[Pb3I8(en)2]n (2), (H3tepa)n(PbI5)n (3), (H2aep)n(PbI4)n (4), (Et22,2′-bipy)n(Pb2I6)n (5) and (Et2dpe)n(Pb2I6)n (6). 1 contains a discrete octahedral (PbI6)4− anion generated under the direction of a novel co-template, [(Hen)4(H2.5O)2I]4+. 2 contains inorganic Cs+ ions and a novel hybrid anionic layer [Pb3I8(en)2]n2n− that has never been encountered in iodoplumbate hybrids. 3 features a zigzag (PbI5)3− chain with the charge being compensated by a triprotonated tepa cation. 4 is composed of perovskite sheets of lead(II) octahedra and aep cations that are generated from tepa via an unprecedented in situ ligand reaction. Both 5 and 6 have (Pb2I6)n2n− chains and represent the first example of introducing a 2,2′-bipy or dpe derivative cation in iodoplumbate hybrids, respectively. The comparative study reveals that aliphatic amines and aromatic species contribute differently to the crystal and electronic structures, and the properties of the hybrids. Importantly, 1–4 exhibit interesting water induced structure conversions, while 5 and 6 can be used as heterogeneous photocatalysts for dye wastewater treatment under visible light irradiation.
