A novel donor-acceptor （D-A） triphenylamino terpyridine derivative L was facilely synthesized and fully characterized, and its single crystals were obtained and determined by X-ray diffraction analysis. It crystalli...A novel donor-acceptor （D-A） triphenylamino terpyridine derivative L was facilely synthesized and fully characterized, and its single crystals were obtained and determined by X-ray diffraction analysis. It crystallizes in triclinic, space group P/ with a = 11.760（5）, b =12.516（5）, c = 12.850（5） A, α = 67.141（5）, β= 65.284（5）, γ = 75.876（5）°, Mr = 621.54, F= 1575.6（11） A3, Z= 2, Dc = 1.310 g/cm3,μ = 0.245 mm-1, F（000） = 648, the final R = 0.0671 and wR = 0.1869 for 11328 observed reflections with 1〉 2σ（I）. Linear and nonlinear optical properties of terpyridine derivative L were systematically investigated. The maximum two-photon cross-section of L was 382.5 GM （Goeppert-Mayer）, measured by two-photon excited fluorescence （TPEF） method. This result demonstrates that the increase of intramolecular charge transfer （ICT） leads to enhanced two-photon absorption （2PA）, which could be achieved by introducing additional electron-donor groups to the molecular framework.展开更多
Two novel terpyridine-based chromophores with D-A (D = donor, A = acceptor) structural model containing modified triphenylamine moiety (L1 and L2 ) have been conveniently synthesized via formylation and reduction in s...Two novel terpyridine-based chromophores with D-A (D = donor, A = acceptor) structural model containing modified triphenylamine moiety (L1 and L2 ) have been conveniently synthesized via formylation and reduction in satisfactory yields, and fully characterized. The single crystals of them were obtained and determined by X-ray diffraction analysis. The relationships between structure and photophysical properties of the two chromophores were investigated both experimentally and theoretically. The measured maximum TPA cross-sections per molecular weight (δmax /MW) of the chromophores are 0.63 GM/(g mol) (L1) and 0.72 GM/(g mol) (L2), respectively, in DMF as a high polar solvent. The results indicate that the value of δmax/MW could be well tuned by the intramolecular charge transfer (ICT), which could be realized by introducing additional elecron-donor/acceptor groups.展开更多
A new metal complex [MnL2]（NO3）2.CH3CN （1） was synthesized by reaction of 4＇-4-（],2,4-triazol-]-yl）- phenyl-2,2＇：6＇,2＂-terpyridine （L） with manganese nitrate. The structure of the complex was determined b...A new metal complex [MnL2]（NO3）2.CH3CN （1） was synthesized by reaction of 4＇-4-（],2,4-triazol-]-yl）- phenyl-2,2＇：6＇,2＂-terpyridine （L） with manganese nitrate. The structure of the complex was determined by X-ray crystallography. The results of UV-vis studies showed that the complex exhibits colorimetric sensing ability for Fe3~, which can be observed by naked eye.展开更多
基金supported by the National Natural Science Foundation of China(51372003)Natural Science Foundation of Anhui Province(1208085MB22)Natural Science Foundation of Fuyang Normal School(2014FSKJ07)
文摘A novel donor-acceptor （D-A） triphenylamino terpyridine derivative L was facilely synthesized and fully characterized, and its single crystals were obtained and determined by X-ray diffraction analysis. It crystallizes in triclinic, space group P/ with a = 11.760（5）, b =12.516（5）, c = 12.850（5） A, α = 67.141（5）, β= 65.284（5）, γ = 75.876（5）°, Mr = 621.54, F= 1575.6（11） A3, Z= 2, Dc = 1.310 g/cm3,μ = 0.245 mm-1, F（000） = 648, the final R = 0.0671 and wR = 0.1869 for 11328 observed reflections with 1〉 2σ（I）. Linear and nonlinear optical properties of terpyridine derivative L were systematically investigated. The maximum two-photon cross-section of L was 382.5 GM （Goeppert-Mayer）, measured by two-photon excited fluorescence （TPEF） method. This result demonstrates that the increase of intramolecular charge transfer （ICT） leads to enhanced two-photon absorption （2PA）, which could be achieved by introducing additional electron-donor groups to the molecular framework.
基金the National Natural Science Foundation of China (21071001, 51142011, 21271004, 21201005 and 21271003)Ministry of Education Funded Projects Focus on returned overseas scholarProgram for New Century Excellent Talents in University (China)
文摘Two novel terpyridine-based chromophores with D-A (D = donor, A = acceptor) structural model containing modified triphenylamine moiety (L1 and L2 ) have been conveniently synthesized via formylation and reduction in satisfactory yields, and fully characterized. The single crystals of them were obtained and determined by X-ray diffraction analysis. The relationships between structure and photophysical properties of the two chromophores were investigated both experimentally and theoretically. The measured maximum TPA cross-sections per molecular weight (δmax /MW) of the chromophores are 0.63 GM/(g mol) (L1) and 0.72 GM/(g mol) (L2), respectively, in DMF as a high polar solvent. The results indicate that the value of δmax/MW could be well tuned by the intramolecular charge transfer (ICT), which could be realized by introducing additional elecron-donor/acceptor groups.
基金financially supported by the National Natural Science Foundation of China(Nos.91122001 and 21021062)the National Basic Research Program of China(No. 2010CB923303)
文摘A new metal complex [MnL2]（NO3）2.CH3CN （1） was synthesized by reaction of 4＇-4-（],2,4-triazol-]-yl）- phenyl-2,2＇：6＇,2＂-terpyridine （L） with manganese nitrate. The structure of the complex was determined by X-ray crystallography. The results of UV-vis studies showed that the complex exhibits colorimetric sensing ability for Fe3~, which can be observed by naked eye.
