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

Year: 2019

Authors: Wang Z., Zhao J.Z., Di Donato M., Mazzone G.

Autors Affiliation: Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, E-208 West Campus,2 Ling Gong Rd, Dalian 116024, Peoples R China; LENS European Lab Nonlinear Spect, Via N Carrara 1, I-50019 Sesto Fiorentino, FI, Italy; INO, Largo Enrico Fermi 6, I-50125 Florence, Italy; Univ Calabria, Dipartimento Chim Tecnol Chim, I-87036 Arcavacata Di Rende, Italy.

Abstract: Excitation into the spin-allowed S-0 (CT)-C-1 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.

Journal/Review: CHEMICAL COMMUNICATIONS

Volume: 55 (10)      Pages from: 1510  to: 1513

More Information: We thank the NSFC (21673031, 21761142005, 21473020, 21603021, 21273028 and 21421005), and the Fundamental Research Funds for the Central Universities (DUT16TD25, DUT15ZD224, and DUT2016TB12) and the State Key Laboratory of Fine Chemicals (ZYTS201801) for financial support.
KeyWords: TIME-RESOLVED EPR; EXCITED-STATE; ELECTRON-DONOR; SINGLET OXYGEN; BODIPY; SENSITIZERS; GENERATION; EFFICIENCY; MOLECULES; PYRENE
DOI: 10.1039/c8cc08159j

ImpactFactor: 5.996
Citations: 64
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