title: Light emission in water-containing cocrystals: the influence of water molecules on the fluorescence properties of a Schiff-base molecule.
abstract: In the presence or absence of water, a Schiff-base compound, 4-amino-3-(2-(2-hydroxybenzylidene)hydrazinyl)-1H-1,2,4-triazole-5(4H)-thione (HATT), forms different crystalline states (HATT, HATT·2H2O, and a lamellar structure, m-HATT·nH2O), which show different luminescence emission properties. Herein, we investigate the emission of HATT and the role of water molecules. A water molecule, which acts as both a hydrogen-bond acceptor and -donor, enlarges the distance between adjacent HATT molecules and hinders non-radiative decay pathways.
authors.affiliation: Key Laboratory of Organic Synthesis of Jiangsu Province, School of Chemistry, Chemical Engineering and Materials, Soochow University, Suzhou, 215123 (China).
authors.forename: Feng
authors.initials: F
authors.lastname: Zhou
authors.forename: Pengli
authors.initials: P
authors.lastname: Tan
authors.forename: Yong
authors.initials: Y
authors.lastname: Ma
authors.forename: Youyong
authors.initials: Y
authors.lastname: Li
authors.forename: Najun
authors.initials: N
authors.lastname: Li
authors.forename: Hua
authors.initials: H
authors.lastname: Li
authors.forename: Lihua
authors.initials: L
authors.lastname: Wang
authors.forename: Hongwei
authors.initials: H
authors.lastname: Gu
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Xu
authors.forename: Jianmei
authors.initials: J
authors.lastname: Lu
mesh_terms: D003460:Crystallization; D005453:Fluorescence; D008027:Light; D008958:Models, Molecular; D015394:Molecular Structure; D010316:Particle Size; D012545:Schiff Bases / Q000737:chemistry*; D013499:Surface Properties; D013871:Thiones / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: C000594132:4-amino-3-(2-(2-hydroxybenzylidene)hydrazinyl)-1H-1,2,4-triazole-5(4H)-thione; D012545:Schiff Bases; D013871:Thiones; D014230:Triazoles; D014867:Water
keywords: Schiff bases; cocrystals; luminescence; self-assembly; water