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s-Tetrazine-Bridged Photochromic Aromatic Framework Material.

ABSTRACT: Integrating fluorescent chromophores in aromatic frameworks could not only prevent aggregation-induced quenching caused by the π-π stacking interaction between the chromophore components but also confer new fluorescence properties. Herein, we report the fabrication of s-tetrazine-bridged aromatic frameworks TzAF by the incorporation of the smallest aromatic fluorophore, s-tetrazine (Tz), into the skeleton of a tetrahedrally connected lattice of aromatic frameworks. The thin films of TzAF coated on silica gel plates were found to exhibit reversible photoswitching fluorescence characteristics under alternate UV and visible-light irradiations with excellent fluorescence stability and high on/off contrast. The repeatable "on/off"fluorescence photoswitchability of the TzAF thin films was mechanistically attributed to light-induced reversible transformation between TzAF's neutral and radical states.

SUBMITTER: Chen T

PROVIDER: S-EPMC8992253 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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s-Tetrazine-Bridged Photochromic Aromatic Framework Material.

Chen Tao T Xiao Guangjun G Wang Zhuo Z Zou Jian J Wang Jian J Hu Weibo W Liu Yahu A YA Yang Hui H Wen Ke K

ACS omega 20220323 13

Integrating fluorescent chromophores in aromatic frameworks could not only prevent aggregation-induced quenching caused by the π-π stacking interaction between the chromophore components but also confer new fluorescence properties. Herein, we report the fabrication of s-tetrazine-bridged aromatic frameworks TzAF by the incorporation of the smallest aromatic fluorophore, s-tetrazine (Tz), into the skeleton of a tetrahedrally connected lattice of aromatic frameworks. Th ...[more]

PMID: 35415337

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