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用于钙传感的红到蓝三重态-三重态湮灭上转换

Red-to-Blue Triplet-Triplet Annihilation Upconversion for Calcium Sensing.

作者信息

Andreeva Valeriia D, Regeni Irene, Yang Tingxiang, Elmanova Anna, Presselt Martin, Dietzek-Ivanšić Benjamin, Bonnet Sylvestre

机构信息

Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, Netherlands.

School of BiosciencesUniversity of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, United Kingdom.

出版信息

J Phys Chem Lett. 2024 Jul 25;15(29):7430-7435. doi: 10.1021/acs.jpclett.4c01528. Epub 2024 Jul 15.

DOI:10.1021/acs.jpclett.4c01528
PMID:39007727
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11284849/
Abstract

Triplet-triplet annihilation upconversion is a bimolecular process converting low-energy photons into high-energy photons. Here, we report a calcium-sensing system working via triplet-triplet annihilation (TTA) upconverted emission. The probe itself was obtained by covalent conjugation of a blue emitter, perylene, with a calcium-chelating moiety, and it was sensitized by the red-light-absorbing photosensitizer palladium(II) tetraphenyltetrabenzoporphyrin (PdTPTBP). Sensing was selective for Ca and occurred in the micromolar domain. In deoxygenated conditions, the TTA upconverted luminescence gradually appeared upon adding an increasing concentration of calcium ions, to reach a maximum upconversion quantum yield of 0.0020.

摘要

三重态-三重态湮灭上转换是一个将低能量光子转换为高能量光子的双分子过程。在此，我们报道了一种通过三重态-三重态湮灭（TTA）上转换发射起作用的钙传感系统。该探针本身是通过将蓝色发光体苝与钙螯合部分共价结合而获得的，并且由吸收红光的光敏剂钯（II）四苯基四苯并卟啉（PdTPTBP）敏化。传感对Ca具有选择性，且发生在微摩尔范围内。在脱氧条件下，随着钙离子浓度的增加，TTA上转换发光逐渐出现，最大上转换量子产率达到0.0020。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/dab378f46c27/jz4c01528_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/ecb31d803971/jz4c01528_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/a6dbb229d817/jz4c01528_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/a49489c692e8/jz4c01528_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/dab378f46c27/jz4c01528_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/ecb31d803971/jz4c01528_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/a6dbb229d817/jz4c01528_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/a49489c692e8/jz4c01528_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d6b/11284849/dab378f46c27/jz4c01528_0004.jpg

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