Controlling fluorescence resonance energy transfer of donor–acceptor dyes by Diels–Alder dynamic covalent bonds. Issue 26 (2nd March 2021)

• Record Type: Journal Article
• Authors: Cui, Yanhui; Li, Fen; Zhang, Xin
• Is Part Of: Chemical communications. Volume 57:Issue 26(2021)
• Page Start: 3275
• Page End: 3278
• Publication Date: 2021-03-02
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc00165e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Two new dyes, consisting of an aromatic amine donor and dansyl acceptor connected by Diels–Alder bonds, display a switchable energy transfer. Dynamic covalent properties enable the mutual conversion of the two dyes by maleimide exchanges. Abstract : Two new dyes consisting of an aromatic amine donor and dansyl acceptor were synthesized, where the intramolecular donor and acceptor are connected by Diels–Alder dynamic covalent bonds. These new dyes display a switchable fluorescence resonance energy transfer through reversible formation and cleavage of Diels–Alder bonds. Single crystal X-ray diffraction revealed that Diels–Alder bonds are longer and weaker than normal single bonds. Dynamic covalent properties enable the mutual conversion of the two dyes by maleimide exchanges, where a new higher energy transfer efficiency system can be constructed.