Highly efficient ultrafast electron injection from the singlet MLCT excited state of copper(I) diimine complexes to TiO2 nanoparticles

Abstract

Cu complexes as photosensitizers: Photoinduced charge-transfer dynamics from a copper(I) diimine complex to TiO2 nanoparticles were investigated by combining multiple time-resolved spectroscopic methods. An efficient and ultrafast electron transfer process from the singlet MLCT state was discovered as a result of structural control owing to the flattening of the tetrahedral geometry in the complex and the bulky groups in the ligands. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.