Cluster-to-cluster charge transfer in a compound with a co-crystallized dye-anchored Ti6 cluster and a classical Ti12 cluster

Abstract

A new titanium-oxo cluster (TOC) with a co-crystallized dye-anchored Ti₆ cluster and a classical Ti₁₂ cluster was isolated. The Ti₆ cluster is anchored by mixed dyes of photoactive triphenylamine and catechol. This is the first co-crystallized neutral TOC. TOC (Ti₆) to TOC (Ti₁₂) charge transfer was studied using electronic spectra and DFT calculations based on their precise structures. The improved photocurrent response properties of the TOC-modified TiO₂ electrode are due to the influence of charge transfer and co-condensation of the Ti₆ and Ti₁₂ clusters. The photocurrent response properties of the compound for fructose and glucose were tested.