title: Structural Insights Into 9-Styrylanthracene-Based Luminophores: Geometry Control Versus Mechanofluorochromism and Sensing Properties.
abstract: Organic luminophores have been increasingly applied in various fields and the corresponding structural studies are emerging as hot topics, which supply essential information on the relationships between molecular structures and photophysical properties. Herein, a series of 9-styrylanthracene-based luminophores with different geometries (symmetrical DTVA, asymmetrical TVA and CPVA) were facilely synthesized for a systematical photophysical invesitigation. The targets display reversible and diverse mechanofluorochromism in the solid state. In particular, DTVA and TVA exhibit an obviously higher solid-state fluorescence quantum efficiency and distinctive AIE-active behavior, with contrary emission shifts under external force. Moreover, DTVA and TVA showed high sensitivity for detection of picric acid (PA) in aggregated states. This study may be helpful to reveal the structural essence of luminesecent materials and pave the way to the development of novel functional luminophores.
authors.affiliation: Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300354, P. R. China.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300354, P. R. China.
authors.forename: Yi-Xuan
authors.initials: YX
authors.lastname: Wang
authors.affiliation: Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300354, P. R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Nanophotonics Research Division, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Duan
authors.affiliation: Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300354, P. R. China.
authors.forename: Yulan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300354, P. R. China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
keywords: aggregation-induced emission; fluorescence; intramolecular charge transfer; mechanofluorochromism; sensors