Abstract
A high-yield route to N-heterocyclic carbene (NHC) derivatives of 2,4,5,6-tetra(9H-carbazol-9-yl)benzene-1,3-dicarbonitrile (4CzIPN) is reported. The NHC-dye was studied in solution by NMR, infrared- and UV–vis spectroscopy, cyclic voltammetry, and photoluminescence. The NHC group bonds to the surface of TiO2 forming a semiconductor/chromophore system that was characterized by cyclic voltammetry, XPS, infrared and UV–vis spectroscopy as well as photoluminescence. The bonding between the NHC group and TiO2 is quite stable towards the photooxidation of sacrificial electron donors under alkaline conditions without applying any protective layers.
Funder
Canada First Research Excellence Fund
Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada
Publisher
The Electrochemical Society
Subject
Electronic, Optical and Magnetic Materials