title: Synthesis and spectroscopic study on photochromism of a new thiosemicarbazone compound containing pyrazolone.
abstract: A new photochromic compound 1,3-diphenyl-4-(4'-fluro)benzal-5-pyrazolone-4-ethyl thiosemicarbazone (DP4FBP-ETSC) was synthesized by direct condensation of 1,3-diphenyl-5-pyrazolone with N4-ethyl thiosemicarbazide. The product was characterized by elemental analysis, IR and 1H NMR spectra. The photochromic properties of the compound were studied using time-dependent fluorescence emission spectra, the UV-vis reflection spectra in the solid state and the UV-vis absorption spectroscopy in liquid. The reaction rate constant of compound was also analyzed. The results show that DP4FBP-ETSC can perform photochromism.
authors.affiliation: Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Chai
authors.forename: Guangfei
authors.initials: G
authors.lastname: Liu
authors.forename: Lang
authors.initials: L
authors.lastname: Liu
authors.forename: Dianzeng
authors.initials: D
authors.lastname: Jia
mesh_terms: D000096:Acetone; D006863:Hydrogen-Ion Concentration; D007536:Isomerism; D007700:Kinetics; D015394:Molecular Structure; D010777:Photochemistry; D047069:Pyrazolones / Q000138:chemical synthesis* / Q000737:chemistry*; D012996:Solutions; D012997:Solvents; D013057:Spectrum Analysis; D013882:Thiosemicarbazones / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: C504553:1,3-diphenyl-4-(4'-fluro)benzal-5-pyrazolone-4-ethyl thiosemicarbazone; D047069:Pyrazolones; D012996:Solutions; D012997:Solvents; D013882:Thiosemicarbazones; D000096:Acetone; C038362:pyrazolone