Enriched switching in a donor–acceptor Stenhouse adduct via reversible covalent bonding
Literature Information
Peng Xuan Zheng, Song Lin Ou, Lei Yu Qu, Ying Zhang, Shi Qing Jiang, Xiang Li, Jun Xiong Wan, Min Zhang, Xin Bao
We have utilized reversible covalent bonding to expand the accessible states of a molecular switch. Introducing a hydroxyl group onto the donor moiety of a donor–acceptor Stenhouse adduct (DASA) imparts an acidity response by forming an oxazolidine ring through intramolecular nucleophilic addition. Furthermore, we observed distinct color changes under cryogenic conditions, extending the thermal responsiveness beyond the cyclization equilibrium observed at elevated temperatures. These unique responses present promising prospects for diverse applications compared to traditional photoinduced binary isomerization.
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