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
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.