Controlling fluorescence resonance energy transfer of donor–acceptor dyes by Diels–Alder dynamic covalent bonds
Yanhui Cui, Fen Li, Xin Zhang
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.
Topics & Concepts
Covalent bondMaleimideFörster resonance energy transferAcceptorChemistryAmine gas treatingPhotochemistryFluorescenceDiels–Alder reactionResonance (particle physics)Energy transferPolymer chemistryOrganic chemistryCatalysisChemical physicsPhysicsQuantum mechanicsParticle physicsCondensed matter physicsLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence ChemistryRadical Photochemical Reactions