title: A new series of two-photon blue/violet fluorescent trans-alkenes: Green synthesis and optical properties.
abstract: A new series of trans-alkenes (3a-3e) containing different electron-donating groups were synthesized by the solvent-free Horner-Wadsworth-Emmons reaction, and characterized by infrared, hydrogen nuclear magnetic resonance, mass spectrometry and elemental analysis. Their UV-visible absorption, one-photon excited fluorescence, two-photon absorption, and two-photon excited fluorescence were systematically investigated in different solvents. Experimental results show different trends in linear and nonlinear optical properties with different donor units. 3a with triphenylamine donor exhibits the best optical properties. It emits strong blue up-converted fluorescence, and the two-photon absorption cross-section can be as large as 218 GM in DCM.
authors.affiliation: College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Jiu-Qiang
authors.initials: JQ
authors.lastname: Huang
authors.affiliation: College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Zhi-Bin
authors.initials: ZB
authors.lastname: Cai
authors.affiliation: College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Fan
authors.initials: F
authors.lastname: Jin
authors.affiliation: Department of Chemistry, Anhui Province Key Laboratory of Functional Inorganic Materials, Anhui University, Hefei 230039, PR China.
authors.forename: Sheng-Li
authors.initials: SL
authors.lastname: Li
authors.affiliation: Department of Chemistry, Anhui Province Key Laboratory of Functional Inorganic Materials, Anhui University, Hefei 230039, PR China.
authors.forename: Yu-Peng
authors.initials: YP
authors.lastname: Tian
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis / Q000737:chemistry*; D004583:Electrons; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D055772:Green Chemistry Technology; D017785:Photons; D013050:Spectrometry, Fluorescence
chemical_list: D000475:Alkenes; D005456:Fluorescent Dyes
keywords: Optical property; Solvent-free; Synthesis; Trans-alkene