期刊
ADVANCED OPTICAL MATERIALS
卷 10, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202102701
关键词
organic room-temperature phosphorescence; photodegradation; triplet-to-singlet Forster-resonance energy transfer; visible-light stimulation
资金
- National Natural Science Foundation of China [21788102, 22125803, 22020102006, 21871083]
- Shanghai Municipal Science and Technology Major Project [2018SHZDZX03]
- Program of Shanghai Academic/Technology Research Leader [20XD1421300]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [19SG26]
- Innovation Program of Shanghai Municipal Education Commission [2017 01-07-00-02-E00010]
- Fundamental Research Funds for the Central Universities
This work presents a photoactivated organic room-temperature phosphorescence material, which utilizes triplet-to-singlet Forster-resonance energy transfer (TS-FRET) inhibited by visible-light stimulation. By doping a stable phosphorescence energy donor and a visible light-sensitive fluorescent dye into a polymer matrix, an amorphous organic RTP system is constructed. The phosphorescence intensity of the energy donor increases upon irradiation with visible light due to the photodegradation of the energy acceptor.
Stimuli-responsive room-temperature phosphorescence (RTP) materials have drawn widespread attention in information encryption, sensors, and bio-imaging. In this work, a photoactivated organic RTP material through triplet-to-singlet Forster-resonance energy transfer (TS-FRET) inhibited by visible-light stimulation is reported. A stable phosphorescence energy donor and a fluorescent dye sensitive to visible light as the energy acceptor are doped into polyvinylpyrrolidone (PVP) polymer matrix to construct an amorphous organic RTP system. Due to the photodegradation characteristic of the energy acceptor, the phosphorescence intensity of the energy donor increases visually upon irradiation with visible light. This study provides a novel strategy to design stimuli-responsive organic RTP materials.
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