Synthesis of a Multi-Stimulus Responsive RGB Fluorescent Organic Molecule Based on Dark Through-Bond Energy Transfer Mechanism

Kuiliang Li; Wenqiang Xie; Minggui Zhang; Dexin Fu; Duo-Duo Hu; Ping Yang

doi:10.1002/chem.202402708

Synthesis of a Multi-Stimulus Responsive RGB Fluorescent Organic Molecule Based on Dark Through-Bond Energy Transfer Mechanism

Chemistry. 2024 Aug 13:e202402708. doi: 10.1002/chem.202402708. Online ahead of print.

Authors

Kuiliang Li¹, Wenqiang Xie¹, Minggui Zhang¹, Dexin Fu², Duo-Duo Hu¹, Ping Yang¹

Affiliations

¹ School of Chemical and Blasting Engineering, Anhui University of Science and Technology, Huainan, Anhui, 232001, P. R. China.
² School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.

PMID: 39136930
DOI: 10.1002/chem.202402708

Abstract

In this study, a novel multi-stimulus responsive RGB fluorescent organic molecule, RTPE-NH₂, was designed and synthesized based on the combination of aggregation-induced emission tetraphenylethylene (TPE) luminophore and acid-responsive fluorescent molecular switch Rhodamine B. RTPE-NH₂ exhibits aggregation-induced emission behavior, as well as UV irradiation-stimulus and acid-stimulus responsive fluorescence properties. It could emit orange-red (R), green(G), and blue(B) light in both solution and PMMA film under 365 nm excitation. The dark through-bond energy transfer (DTBET) mechanism was proposed and supported by control experiments and TD-DFT calculations. The synthesis and application of RTPE-NH₂ could accelerate the development of organic smart materials with high sensitivity and excellent optical properties.

Keywords: DTBET mechanism; Organic material; RGB fluorescence; Rhodamine B; Tetraphenylethylene.

Abstract

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