Phototunable phosphorescence energy transfer based on photodimerization of coumarin-12-crown-4 accelerated by γ-cyclodextrin,Chemical Engineering Journal

当前位置： X-MOL 学术 › Chem. Eng. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Phototunable phosphorescence energy transfer based on photodimerization of coumarin-12-crown-4 accelerated by γ-cyclodextrin
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.cej.2024.158772
Hui-Juan Wang, Yan-Tao Li, Ming-Che Shao, Chang-Shuo Yu, Jin-Yao Yang, Lingyang Liu, Suna Wang, Jianmin Dou

Herein, we designed and synthesized water-soluble coumarin-12-crown-4 (C12C4) which can be encapsulated by γ-cyclodextrin (γ-CD) with 2:1 ratio forming psuedorotaxane, accompanying the morphology from nanotubes to regular nanosheets with a range of edge lengths (2–10 μm) and a range of thicknesses (200–500 nm). With α-CD, β-CD as references, the encapsulation by γ-CD could promote the photodimerization process of C12C4 after irradiation with 365 nm light. Meanwhile, the morphology of pseudorotaxane C12C4⊂γ-CD changed into a chapped surface. By virtue of this, the pseudorotaxane C12C4⊂γ-CD was doped into poly (vinyl alcohol) (PVA) and a phosphorescence emission at 515 nm (τ = 458.80 ms) appeared and showed green afterglow for 3 s. Further doping commercial dye rhodamine B (RhB) into C12C4⊂γ-CD@PVA, a highly efficient triplet-to-singlet Förster-resonance energy transfer (TS-FRET) system was obtained with multicolor afterglows. More interestingly, both the phosphorescence of C12C4⊂γ-CD@PVA and the delayed fluorescence of C12C4⊂γ-CD + RhB@PVA could be tuned by 365 nm light irradiation. Finally, the photo-controlled phosphorescence smart materials were used to constructed INHIBIT logic gate, logic operation of INHIBIT + AND and time resolved anti-counterfeiting.

更新日期：2024-12-20

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南