Co-reporter:Qianyou Wang, Shan Wang, Xiao Feng, Le Wu, Guoying Zhang, Mingrui Zhou, Bo Wang, and Li Yang
ACS Applied Materials & Interfaces November 1, 2017 Volume 9(Issue 43) pp:37542-37542
Publication Date(Web):October 18, 2017
DOI:10.1021/acsami.7b12767
Heat-resistant explosives with high performance and insensitivity to external stimulus or thermal are indispensable in both the military and civilian worlds especially when utilized under harsh conditions. We designed and synthesized a new heat-resistant three-dimensional chelating energetic metal–organic framework (CEMOF-1) by employing 4-amino-4H-1,2,4-triazole-3,5-diol (ATDO) as a ligand. Because of its chelating 3D structural feature, good oxygen balance (−29.58%), and high crystal density (2.234 g cm–3), CEMOF-1 demonstrates high decomposition temperature (445 °C), insensitivity to stimulation, and excellent detonation velocity (10.05 km s–1) and detonation pressure (49.36 GPa). The advantages of facile synthesis, thermal stability, and powerful explosive performance make CEMOF-1 as a promising candidate for heat-resistant explosives in future applications.Keywords: chealting ligand; energetic materials; explosives; heat-resistant; metal−organic frameworks;
Co-reporter:Shan Wang;Qianyou Wang;Bo Wang;Li Yang
Advanced Materials 2017 Volume 29(Issue 36) pp:
Publication Date(Web):2017/09/01
DOI:10.1002/adma.201701898
An overview of the current status of coordination polymers and metal–organic frameworks (MOFs) pertaining to the field of energetic materials is provided. The explosive applications of MOFs are discussed from two aspects: one for detection of explosives, and the other for explosive desensitization. By virtue of their adjustable pore/cage sizes, high surface area, tunable functional sites, and rich host–guest chemistry, MOFs have emerged as promising candidates for both explosive sensing and desensitization. The challenges and perspectives in these two areas are thoroughly discussed, and the processing methods for practical applications are also discussed briefly.
Co-reporter:Yuanyuan Zhang;Jiyun Duan;Dou Ma;Dr. Pengfei Li;Siwu Li;Haiwei Li;Dr. Junwen Zhou;Dr. Xiaojie Ma; Dr. Xiao Feng; Dr. Bo Wang
Angewandte Chemie 2017 Volume 129(Issue 51) pp:16531-16535
Publication Date(Web):2017/12/18
DOI:10.1002/ange.201710633
AbstractThree-dimensional covalent organic frameworks (3D COFs) are promising crystalline materials with well-defined structures, high porosity, and low density; however, the limited choice of building blocks and synthetic difficulties have hampered their development. Herein, we used a flexible and aliphatic macrocycle, namely γ-cyclodextrin (γ-CD), as the soft struts for the construction of a polymeric and periodic 3D extended network, with the units joined via tetrakis(spiroborate) tetrahedra with various counterions. The inclusion of pliable moieties in the robust open framework endows these CD-COFs with dynamic features, leading to a prominent Li ion conductivity of up to 2.7 mS cm−1 at 30 °C and excellent long-term Li ion stripping/plating stability. Exchanging the counterions within the pores can effectively modulate the interactions between the CD-COF and CO2 molecules.
Co-reporter:Yuanyuan Zhang;Jiyun Duan;Dou Ma;Dr. Pengfei Li;Siwu Li;Haiwei Li;Dr. Junwen Zhou;Dr. Xiaojie Ma; Dr. Xiao Feng; Dr. Bo Wang
Angewandte Chemie International Edition 2017 Volume 56(Issue 51) pp:16313-16317
Publication Date(Web):2017/12/18
DOI:10.1002/anie.201710633
AbstractThree-dimensional covalent organic frameworks (3D COFs) are promising crystalline materials with well-defined structures, high porosity, and low density; however, the limited choice of building blocks and synthetic difficulties have hampered their development. Herein, we used a flexible and aliphatic macrocycle, namely γ-cyclodextrin (γ-CD), as the soft struts for the construction of a polymeric and periodic 3D extended network, with the units joined via tetrakis(spiroborate) tetrahedra with various counterions. The inclusion of pliable moieties in the robust open framework endows these CD-COFs with dynamic features, leading to a prominent Li ion conductivity of up to 2.7 mS cm−1 at 30 °C and excellent long-term Li ion stripping/plating stability. Exchanging the counterions within the pores can effectively modulate the interactions between the CD-COF and CO2 molecules.
Co-reporter:Qian-You Wang;Shan Wang;Le Wu;Sheng-Han Zhang;Nan Ding;Wen-Chao Tong;Ming-Rui Zhou;Bo Wang;Li Yang
RSC Advances (2011-Present) 2017 vol. 7(Issue 76) pp:48161-48165
Publication Date(Web):2017/10/11
DOI:10.1039/C7RA08115D
Two powerful yet safe energetic materials (EMs) have been synthesized with high yield via a facile method. We used low-cost industrial products as starting materials and water as a solvent rather than organic solvents without generating harmful by-products during the two-step synthetic procedure. Purification of the target materials could be obtained through a simple separation process with low energy consumption. Moreover, the thermal stability, insensitivity, and explosive performance of these two EMs are better than that of commonly used energetic materials such as TNT and TATB (2,4,6-triamino-1,3,5-trinitrobenzene).
Co-reporter:Li Ma;Shan Wang;Bo Wang
Materials Chemistry Frontiers 2017 vol. 1(Issue 12) pp:2474-2486
Publication Date(Web):2017/11/22
DOI:10.1039/C7QM00254H
AIEgens have evoked an immense amount of interest and progressed significantly since the first report of the aggregation-induced emission (AIE) concept in 2001. Metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) are porous crystalline solids that allow molecular building units to be aligned based on strong interactions and bonding in a well-defined manner, offering possibilities to introduce functionalities and complexities within their backbones. Introducing AIEgens to construct such crystalline solids, in which the AIEgens are stitched together by covalent or coordinate bonds and placed in specific geometric and spatial arrangements, provides a powerful platform for the investigation of the underlying AIE mechanisms and the design of highly emissive porous materials. This mini review will give a brief introduction to AIEgen-based MOFs and COFs and focus on their photoluminescence properties and potential applications. We will discuss how the AIEgens are rigidified in these crystalline solids and review how such a concept can be utilized to remarkably improve the performance of the corresponding optoelectronics and sensors.
Co-reporter:Nan Ding, Haiwei Li, Xiao Feng, Qianyou Wang, Shan Wang, Li Ma, Junwen Zhou, and Bo Wang
Journal of the American Chemical Society 2016 Volume 138(Issue 32) pp:10100-10103
Publication Date(Web):August 1, 2016
DOI:10.1021/jacs.6b06051
Metal–organic frameworks (MOFs), by virtue of their remarkable uptake capability, selectivity, and ease of regeneration, hold great promise for carbon capture from fossil fuel combustion. However, their stability toward moisture together with the competitive adsorption of water against CO2 drastically dampens their capacity and selectivity under real humid flue gas conditions. In this work, an effective strategy was developed to tackle the above obstacles by partitioning the channels of MOFs into confined, hydrophobic compartments by in situ polymerization of aromatic acetylenes. Specifically, polynaphthylene was formed via a radical reaction inside the channels of MOF-5 and served as partitions without altering the underlying structure of the framework. Compared with pristine MOF-5, the resultant material (PN@MOF-5) exhibits a doubled CO2 capacity (78 vs 38 cm3/g at 273 K and 1 bar), 23 times higher CO2/N2 selectivity (212 vs 9), and significantly improved moisture stability. The dynamic CO2 adsorption capacity can be largely maintained (>90%) under humid conditions during cycles. This strategy can be applied to other MOF materials and may shed light on the design of new MOF–polymer materials with tunable pore sizes and environments to promote their practical applications.
Co-reporter:Li Ma, Shan Wang, Xiao Feng, Bo Wang
Chinese Chemical Letters 2016 Volume 27(Issue 8) pp:1383-1394
Publication Date(Web):August 2016
DOI:10.1016/j.cclet.2016.06.046
Covalent organic frameworks (COFs) as an emerging class of porous materials have achieved remarkable progress in recent years. Their high surface area, low mass densities, highly ordered periodic structures, and ease of functionalization make COFs exhibit superior potential in gas storage and separation, optoelectronic device and catalysis. This mini review gives a brief introduction of COFs and highlights their applications in electronic and optical fields.This review gives a brief introduction of COFs and highlights their applications in electronic and optical fields.Download high-res image (225KB)Download full-size image
Co-reporter:Jingshu Zhao, Haiwei Li, Yuzhen Han, Rui Li, Xuesong Ding, Xiao Feng and Bo Wang
Journal of Materials Chemistry A 2015 vol. 3(Issue 23) pp:12145-12148
Publication Date(Web):06 May 2015
DOI:10.1039/C5TA00998G
A microporous MOF structure, D-his–ZIF-8, with a chiral environment was synthesized via a simple ligand in situ substitution (LIS) of 2-methyl imidazolate (mIm) with D-histidine. These chiral MOF composites show exceptional selective separation capability for racemic alanine and glutamic acid, with an ee value of 78.52% and 79.44%, respectively.
Co-reporter:Yuanyuan Zhang;Dr. Xiao Feng;Haiwei Li;Yifa Chen;Jingshu Zhao;Shan Wang;Lu Wang ;Dr. Bo Wang
Angewandte Chemie International Edition 2015 Volume 54( Issue 14) pp:
Publication Date(Web):
DOI:10.1002/anie.201501643
Co-reporter:Yuanyuan Zhang;Dr. Xiao Feng;Haiwei Li;Yifa Chen;Jingshu Zhao;Shan Wang;Lu Wang ;Dr. Bo Wang
Angewandte Chemie International Edition 2015 Volume 54( Issue 14) pp:4259-4263
Publication Date(Web):
DOI:10.1002/anie.201500207
Abstract
Metal–organic frameworks (MOFs) are a promising class of nanoporous polymeric materials. However, the processing of such fragile crystalline powders into desired shapes for further applications is often difficult. A photoinduced postsynthetic polymerization (PSP) strategy was now employed to covalently link MOF crystals by flexible polymer chains, thus endowing the MOF powders with processability and flexibility. Nanosized UiO-66-NH2 was first functionalized with polymerizable functional groups, and its subsequent copolymerization with monomers was easily induced by UV light under solvent-free and mild conditions. Because of the improved interaction between MOF particles and polymer chains, the resulting stand-alone and elastic MOF-based PSP-derived membranes possess crack-free and uniform structures and outstanding separation capabilities for CrVI ions from water.
Co-reporter:Yuanyuan Zhang;Dr. Xiao Feng;Haiwei Li;Yifa Chen;Jingshu Zhao;Shan Wang;Lu Wang ;Dr. Bo Wang
Angewandte Chemie 2015 Volume 127( Issue 14) pp:4333-4337
Publication Date(Web):
DOI:10.1002/ange.201500207
Abstract
Metal–organic frameworks (MOFs) are a promising class of nanoporous polymeric materials. However, the processing of such fragile crystalline powders into desired shapes for further applications is often difficult. A photoinduced postsynthetic polymerization (PSP) strategy was now employed to covalently link MOF crystals by flexible polymer chains, thus endowing the MOF powders with processability and flexibility. Nanosized UiO-66-NH2 was first functionalized with polymerizable functional groups, and its subsequent copolymerization with monomers was easily induced by UV light under solvent-free and mild conditions. Because of the improved interaction between MOF particles and polymer chains, the resulting stand-alone and elastic MOF-based PSP-derived membranes possess crack-free and uniform structures and outstanding separation capabilities for CrVI ions from water.
Co-reporter:Yuanyuan Zhang;Dr. Xiao Feng;Haiwei Li;Yifa Chen;Jingshu Zhao;Shan Wang;Lu Wang ;Dr. Bo Wang
Angewandte Chemie 2015 Volume 127( Issue 14) pp:
Publication Date(Web):
DOI:10.1002/ange.201501643
Co-reporter:Yuexin Guo ; Xiao Feng ; Tianyu Han ; Shan Wang ; Zhengguo Lin ; Yuping Dong ;Bo Wang
Journal of the American Chemical Society 2014 Volume 136(Issue 44) pp:15485-15488
Publication Date(Web):October 17, 2014
DOI:10.1021/ja508962m
Herein we report three metal–organic frameworks (MOFs), TABD-MOF-1, -2, and -3, constructed from Mg2+, Ni2+, and Co2+, respectively, and deprotonated 4,4′-((Z,Z)-1,4-diphenylbuta-1,3-diene-1,4-diyl)dibenzoic acid (TABD-COOH). The fluorescence of these three MOFs is tuned from highly emissive to completely nonemissive via ligand-to-metal charge transfer by rational alteration of the metal ion. Through competitive coordination substitution, the organic linkers in the TABD-MOFs are released and subsequently reassemble to form emissive aggregates due to aggregation-induced emission. This enables highly sensitive and selective detection of explosives such as five-membered-ring energetic heterocyclic compounds in a few seconds with low detection limits through emission shift and/or turn-on. Remarkably, the cobalt-based MOF can selectively sense the powerful explosive 5-nitro-2,4-dihydro-3H-1,2,4-triazole-3-one with high sensitivity discernible by the naked eye (detection limit = 6.5 ng on a 1 cm2 testing strip) and parts per billion-scale sensitivity by spectroscopy via pronounced fluorescence emission.
Co-reporter:Yijia Zhang;Ting Han;Shangzhi Gu;Tianye Zhou;Chuanzhen Zhao;Yuexin Guo;Dr. Xiao Feng; Bin Tong;Dr. J. Bing;Jianbing Shi; Junge Zhi; Yuping Dong
Chemistry - A European Journal 2014 Volume 20( Issue 29) pp:8856-8861
Publication Date(Web):
DOI:10.1002/chem.201403132
Abstract
Three tetra-aryl substituted 1,3-butadiene derivatives with aggregation enhanced emission (AEE) and mechanochromic fluorescence behavior have been rationally designed and synthesized. The results suggest an effective design strategy for developing diverse materials with aggregation induced emission (AIE) and significant mechanochromic performance by employing D-π-A structures with large dipole moments.
Co-reporter:Ting Han, Yijia Zhang, Xiao Feng, Zhengguo Lin, Bin Tong, Jianbing Shi, Junge Zhi and Yuping Dong
Chemical Communications 2013 vol. 49(Issue 63) pp:7049-7051
Publication Date(Web):28 Jun 2013
DOI:10.1039/C3CC42644K
Reversible piezochromic luminescence and aggregation induced emission properties of 4,4′-((Z,Z)-1,4-diphenylbuta-1,3-diene-1,4-diyl)dibenzoic acid are reported. The photoluminescent color of it changes from blue to yellow-green upon grinding, which can be restored upon exposure to a solvent. Intermolecular hydrogen bonding plays a key role in the altered emission.
Co-reporter:Ting Han, Yijia Zhang, Xiao Feng, Zhengguo Lin, Bin Tong, Jianbing Shi, Junge Zhi and Yuping Dong
Chemical Communications 2013 - vol. 49(Issue 63) pp:NaN7051-7051
Publication Date(Web):2013/06/28
DOI:10.1039/C3CC42644K
Reversible piezochromic luminescence and aggregation induced emission properties of 4,4′-((Z,Z)-1,4-diphenylbuta-1,3-diene-1,4-diyl)dibenzoic acid are reported. The photoluminescent color of it changes from blue to yellow-green upon grinding, which can be restored upon exposure to a solvent. Intermolecular hydrogen bonding plays a key role in the altered emission.
Co-reporter:Jingshu Zhao, Haiwei Li, Yuzhen Han, Rui Li, Xuesong Ding, Xiao Feng and Bo Wang
Journal of Materials Chemistry A 2015 - vol. 3(Issue 23) pp:NaN12148-12148
Publication Date(Web):2015/05/06
DOI:10.1039/C5TA00998G
A microporous MOF structure, D-his–ZIF-8, with a chiral environment was synthesized via a simple ligand in situ substitution (LIS) of 2-methyl imidazolate (mIm) with D-histidine. These chiral MOF composites show exceptional selective separation capability for racemic alanine and glutamic acid, with an ee value of 78.52% and 79.44%, respectively.
![Methanone, bis[4-(2-bromoethoxy)phenyl]-](http://img.cochemist.com/ccimg/288300/288248-52-2.png)
![Methanone, bis[4-(2-bromoethoxy)phenyl]-](http://img.cochemist.com/ccimg/288300/288248-52-2_b.png)
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![1,4-Bis[(trimethylsilyl)ethynyl]benzene](http://img.cochemist.com/ccimg/73400/73392-23-1.png)
![1,4-Bis[(trimethylsilyl)ethynyl]benzene](http://img.cochemist.com/ccimg/73400/73392-23-1_b.png)
![Dibenzo[a,e]cyclooctene](http://img.cochemist.com/ccimg/300/262-89-5.png)
![Dibenzo[a,e]cyclooctene](http://img.cochemist.com/ccimg/300/262-89-5_b.png)
![Tungstate(3-),tetracosa-m-oxododecaoxo[m12-[phosphato(3-)-kO:kO:kO:kO':kO':kO':kO'':kO'':kO'':kO''':kO''':kO''']]dodeca-,hydrogen (1:3)](http://img.cochemist.com/ccimg/1400/1343-93-7.png)
![Tungstate(3-),tetracosa-m-oxododecaoxo[m12-[phosphato(3-)-kO:kO:kO:kO':kO':kO':kO'':kO'':kO'':kO''':kO''':kO''']]dodeca-,hydrogen (1:3)](http://img.cochemist.com/ccimg/1400/1343-93-7_b.png)
