title: Molecular keypad locks based on gated photochromism and enhanced fluorescence by protonation effects.
abstract: Being a "lock-unlock" system, gated photochromism is generally applied in nondestructive readout for optical memory materials. In the presented paper, we successfully constructed molecular keypad locks by introduction of the gated photochromism. A series of diarylethenes compounds (DAEs) based on fluorescent 5-methoxy-2-pyridyl thiazoles, were prepared and then characterized as photochromic fluorescent switches. Protoantion of the reported DAEs resulted in both protonation-locked photo-reactivities, i.e., gated photochromism, and enhancement of fluorescence. Molecular keypad locks were then successfully constructed, which are also featured by "one-key" lock operation.
authors.affiliation: Department of Chemistry, Yanbian University, Yanji City, Jilin Province, 133002, China.
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Zheng
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.forename: Jing-Yi
authors.initials: JY
authors.lastname: Jin
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Yan
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