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Phosphorescence Energy Transfer: Ambient Afterglow Fluorescence from Water-Processable and Purely Organic Dyes via Delayed Sensitization.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-03-06 , DOI: 10.1002/anie.202002555 Suman Kuila 1 , Subi J George 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-03-06 , DOI: 10.1002/anie.202002555 Suman Kuila 1 , Subi J George 1
Affiliation
Ambient afterglow luminescence from metal‐free organic chromophores would provide a promising alternative to the well‐explored inorganic phosphors. However, the realization of air‐stable and solution‐processable organic afterglow systems with long‐lived triplet or singlet states remains a formidable challenge. In the present study, a delayed sensitization of the singlet state of organic dyes via phosphorescence energy transfer from organic phosphors is proposed as an alternative strategy to realize “afterglow fluorescence”. This concept is demonstrated with a long‐lived phosphor as the energy donor and commercially available fluorescent dyes as the energy acceptor. Triplet‐to‐singlet Förster‐resonance energy‐transfer (TS‐FRET) between donor and acceptor chromophores, which are co‐organized in an amorphous polymer matrix, results in tuneable yellow and red afterglow from the fluorescent acceptors. Moreover, these afterglow fluorescent hybrids are highly solution‐processable and show excellent air‐stability with good quantum yields.
中文翻译:
磷光能量转移:通过延迟敏化从水可加工和纯有机染料中发出的余辉荧光。
来自无金属有机发色团的环境余辉发光将为开发良好的无机磷提供有希望的替代方法。然而,具有长寿命的三重态或单重态的空气稳定和可溶液处理的有机余辉系统的实现仍然是一个巨大的挑战。在本研究中,提出了通过从有机磷光体转移磷光能量来延迟有机染料单重态的敏化,作为实现“余辉荧光”的替代策略。长寿命的荧光粉作为能量供体,市售的荧光染料作为能量受体证明了这一概念。供体和受体发色团之间的三重态-单重傅斯特共振能量转移(TS-FRET),它们在无定形聚合物基质中共同组织,导致荧光受体产生可调节的黄色和红色余辉。此外,这些余辉荧光杂化物具有很高的溶液加工性,并具有出色的空气稳定性和良好的量子产率。
更新日期:2020-03-06
中文翻译:
磷光能量转移:通过延迟敏化从水可加工和纯有机染料中发出的余辉荧光。
来自无金属有机发色团的环境余辉发光将为开发良好的无机磷提供有希望的替代方法。然而,具有长寿命的三重态或单重态的空气稳定和可溶液处理的有机余辉系统的实现仍然是一个巨大的挑战。在本研究中,提出了通过从有机磷光体转移磷光能量来延迟有机染料单重态的敏化,作为实现“余辉荧光”的替代策略。长寿命的荧光粉作为能量供体,市售的荧光染料作为能量受体证明了这一概念。供体和受体发色团之间的三重态-单重傅斯特共振能量转移(TS-FRET),它们在无定形聚合物基质中共同组织,导致荧光受体产生可调节的黄色和红色余辉。此外,这些余辉荧光杂化物具有很高的溶液加工性,并具有出色的空气稳定性和良好的量子产率。