Increasing the anti-Stokes shift in TTA upconversion with photosensitizers showing red-shifted spin-allowed charge transfer absorption but a non-compromised triplet state energy level

Zhijia Wang; Jianzhang Zhao; Mariangela Di Donato; Gloria Mazzone

doi:10.1039/c8cc08159j

Increasing the anti-Stokes shift in TTA upconversion with photosensitizers showing red-shifted spin-allowed charge transfer absorption but a non-compromised triplet state energy level

Chem Commun (Camb). 2019 Jan 29;55(10):1510-1513. doi: 10.1039/c8cc08159j.

Authors

Zhijia Wang¹, Jianzhang Zhao, Mariangela Di Donato, Gloria Mazzone

Affiliation

¹ State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, E-208 West Campus, 2 Ling-Gong Road, Dalian 116024, P. R. China. zhaojzh@dlut.edu.cn.

PMID: 30648169
DOI: 10.1039/c8cc08159j

Abstract

Excitation into the spin-allowed S0 → 1CT absorption band of a spin-orbit charge transfer intersystem crossing (SOCT-ISC) triplet photosensitizer (PS) was used as a new strategy to increase the anti-Stokes shift in triplet-triplet annihilation (TTA) upconversion, with the advantages of red-shifted absorption but the non-compromised triplet state energy level of the triplet PS.