Co-reporter:Enyu Zhou, Kunlun Yan, Baoyin Zhao, Yishan Wang, Wei Wei, Bo Peng
Optics Communications 2011 Volume 284(Issue 4) pp:1034-1037
Publication Date(Web):15 February 2011
DOI:10.1016/j.optcom.2010.10.067
Co-reporter:Yan Kun-Lun, Zhou En-Yu, Wei Wei, Peng Bo
Optics Communications 2011 Volume 284(Issue 6) pp:1626-1630
Publication Date(Web):15 March 2011
DOI:10.1016/j.optcom.2010.11.033
Co-reporter:Chao Gao, Kai Cui, Jiangbo She, Chaoqi Hou, Hongyan Guo, Wei Zhao, Wei Wei, Bo Peng
Inorganica Chimica Acta 2009 Volume 362(Issue 6) pp:2001-2005
Publication Date(Web):20 April 2009
DOI:10.1016/j.ica.2008.09.033
A novel neodymium pentafluoropropionate binuclear complex, Nd(C2F5COO)3Dipy (Dipy: 2,2′-dipyridyl), was synthesized and characterized by single-crystal X-ray diffraction. At a concentration of 0.2 M in DMSO-d6, the Judd–Ofelt parameters (Ω2, Ω4, Ω6) were calculated from the UV–Vis spectrum. According to the small value of Ω2 and the zero splitting energy of 4F/3/2 level, a symmetric ligand field of the complex was confirmed in DMSO-d6. Strong emission of the complex in DMSO-d6 at 1057 nm with a decay time about 1.3 μs were detected when excited at 800 nm pumped by a laser diode. The stimulated emission cross-section of 4F3/2 → 4I11/2 fluorescence transition was 2.36 × 10−20 cm2 and comparable with some laser glasses, which indicated good radiative properties of this neodymium pentafluoropropionate binuclear complex in liquid matrix.The single-crystal structure and optical properties of a novel neodymium pentafluoropropionate binuclear complex were studied. The complex showed good radiative properties in DMSO with a high stimulated emission cross-section as 2.36 × 10−20 cm2, which is comparable with some laser glasses.
Co-reporter:Hong-Yu Wang, Kan-Yi Pu, Shu Huang, Feng Liu, Bo Peng, Wei Wei
Reactive and Functional Polymers 2009 69(2) pp: 117-123
Publication Date(Web):February 2009
DOI:10.1016/j.reactfunctpolym.2008.11.008
Co-reporter:Xiaoming Qiu, Kehan Yu, Jiabao Lu, Chao Gao, Chaoqi Hou, Junfang He, Wei Wei, Bo Peng
Optical Materials 2008 Volume 31(Issue 2) pp:117-121
Publication Date(Web):October–December 2008
DOI:10.1016/j.optmat.2008.01.009
A liquid solution on the basis of dissolving a novel tetranuclear neodymium complex Nd4(TTA)10O12H22 (HTTA: 2-thenoyltrifluoroacetone) in polytrifluorochloroethylene oil was presented. The molecular structure of the complex was characterized by single-crystal X-ray diffraction. The optical properties of the liquid medium were studied. Enhanced emission was observed at 1064 nm when excited at 340 nm due to efficient energy transfer from TTA to the Nd3+ ions and the mechanism for energy transfer process was discussed in detail. The obtained fluorescent lifetime was 1.7 μs and the quantum yield value was 0.63%, which compare well with some other organic liquid media reported previously. Besides, this liquid shows outstanding properties with no toxicity and causticity, nonvolatility and high stability.
Co-reporter:Xiaoming Qiu, Kehan Yu, Chao Gao, Chaoqi Hou, Junfang He, Zhiwei Zhou, Wei Wei, Bo Peng
Chemical Physics Letters 2008 Volume 457(1–3) pp:194-197
Publication Date(Web):20 May 2008
DOI:10.1016/j.cplett.2008.03.093
Abstract
A novel tetranuclear neodymium complex was synthesized and dissolved into N,N-dimethylformamide. The molecular structure of the complex was characterized by single-crystal X-ray diffraction. Fluorescent resonance energy transfer theory was applied to investigate the optical properties of the sample. It was found that the quenching of Nd3+ excited state via O–H vibrational excitation could be nearly neglected and the cross-relaxation or excitation migration rate of the tetranuclear complex was only 1/16 times of the traditional mononuclear one.
Co-reporter:R. B. Yu;K. H. Yu;X. X. Xu;X. M. Qiu;W. Huang;W. Wei;S. Liu;G. Tang;H. Ford;B. Peng
Advanced Materials 2007 Volume 19(Issue 6) pp:838-842
Publication Date(Web):19 FEB 2007
DOI:10.1002/adma.200600936
Efficient lasing is demonstrated from a clear dispersion of silane-modifed Nd2O3nanoparticles in dimethylsulfoxide. Surface modification with the silane helps to disperse the nanoparticles, as indicated in the figure. The fluorescence lifetime and quantum yield of the dispersed nanoparticles are amongst the highest obtained for a NdIII emitting center dispersed in an organic medium.
Co-reporter:Feng Liu;Xiangxing Xu;Kehan Yu;Wei Huang Dr. Dr.;Wei Wei Dr.
ChemPhysChem 2007 Volume 8(Issue 5) pp:703-711
Publication Date(Web):27 FEB 2007
DOI:10.1002/cphc.200600684
A kinetic model is developed with the goal of understanding and predicting the morphology evolution of nanocrystals in nonequilibrium growth conditions. The model is based on the assumption that under such conditions, different crystal planes have different kinetic parameters. This model focuses on the morphology-developing stage and is successfully related to the nucleation process and other crystal evolution mechanisms. It is believed to be a universal model and is applied to discuss the morphology evolution of CdSe nanocrystals, including the aspect ratio, injection schemes, ligands effect and morphology distribution.
Co-reporter:B. Peng;Z. Fan;X. Qiu;L. Jiang;G. H. Tang;H. D. Ford;W. Huang
Advanced Materials 2005 Volume 17(Issue 7) pp:
Publication Date(Web):30 MAR 2005
DOI:10.1002/adma.200401271
Traditional vanadate glasses are known to be totally black (see inset Figure), while their crystal counterparts are promising laser materials due to their large stimulated-emission cross-section. In this work, a novel transparent vanadate glass (see main Figure) is realized for the first time. Furthermore, when doped with neodymium, its large stimulated-emission cross-section and low phonon energy demonstrate potential to be utilized in optical applications, especially in laser-related fiber optics.
