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Download fileControllable Fluorescence Switching of a Coordination Chain Based on the Photoinduced Single-Crystal-to-Single-Crystal Reversible Transformation of a syn-[2.2]Metacyclophane
journal contribution
posted on 02.01.2018, 13:36 authored by Ni-Ya Li, Dong Liu, Zhi-Gang Ren, Christina Lollar, Jian-Ping Lang, Hong-Cai ZhouThe observation of
a reversible chemical transformation corresponding to an external
stimulus in the solid state is intriguing in the exploration of smart
materials, which can potentially be applied in molecular machines,
molecular switches, sensors, and data storage devices. The solid-state
photodimerization reaction of 1,3-bis[2-(4-pyridyl)ethenyl]benzene
(1,3-bpeb) in a one-dimensional coordination polymer {[Cd2(1,3-bpeb)2(4-FBA)4]·H2O}n (4-FBA = 4-fluorobenzoate) with 365
nm UV light afforded syn-tetrakis(4-pyridyl)-1,2,9,10-diethano[2.2]metacyclophane
(syn-tpmcp) in quantitative yield via a single-crystal-to-single-crystal
(SCSC) transformation. Upon irradiation with 254 nm UV light, an SCSC
conversion from syn-tpmcp to 1,3-bpeb was also achieved
in quantitative yield within the syn-tpmcp-supported
coordination polymer {[Cd2(syn-tpmcp)(4-FBA)4]·H2O}n. In particular,
accompanied by the reversible transformation between 1,3-bpeb and syn-tpmcp, the coordination chain exhibits photocontrollable
fluorescence-switching behavior, which makes this intelligent material
an appealing candidate for practical applications.
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Controllable Fluorescence Switching254 nm UV lightbpebchemical transformationtpmcpSCSC conversion4- fluorobenzoate365 nm UV lightPhotoinduced Single-Crystal-to-Single-Crystal Reversible Transformationcoordination chain exhibits photocontrollable fluorescence-switching behaviorphotodimerization reactionCoordination ChainFBAdata storage devicessyn