3 years ago

Understanding and exploiting long-lived near-infrared emission of a molecular ruby

Understanding and exploiting long-lived near-infrared emission of a molecular ruby
Enabling strong and long-lived NIR emission from complexes with earth-abundant metal ions is exemplified by embedding chromium(III) in a very strong ligand field yielding the molecular ruby [Cr(ddpd)2]3+. This review aims at illustrating the main non-radiative decay pathways for electronically excited chromium(III) complexes, namely back-intersystem crossing, excited state distortion and multiphonon relaxation and at controlling these pathways by molecular design. The case study of [Cr(ddpd)2]3+ highlights recent successful design strategies and discusses first applications of the highly emissive 3d metal complex as optical sensor molecule and as photosensitizer.

Publisher URL: www.sciencedirect.com/science

DOI: S0010854517306847

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