Ambient-temperature near-IR phosphorescence and potential applications of rhenium-oxo corroles

Sergey M. Borisov, Rune F. Einrem, Abraham B. Alemayehu, Abhik Ghosh

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Presented herein is a first photophysical investigation of a series of rhenium(v)-oxo tris(p-X-phenyl)corroles, Re[TpXPC](O), where X = CF 3 , F, H, CH 3 , and OCH 3 . The complexes all exhibit near-IR phosphorescence in anoxic toluene at room temperature, with emission maxima at 780 ± 10 nm, phosphorescence decay times of 56-74 μs and quantum yields of 1.07-1.52%, the highest reported to date for phosphorescent corrole derivatives. We have also demonstrated that the dyes may serve as indicators in optical oxygen sensors and as sensitizers in triplet-triplet-annihilation-based upconversion. Although the ReO corroles are not superior to benchmark benzoporphyrin complexes that are currently used in these applications, they may prove useful in certain areas such as optical multianalyte sensing owing to improved flexibility in the available spectral properties of the dyes. The high thermal and photochemical stability of the complexes also bodes well for their deployment as new, phosphorescent sensitizers in photodynamic therapy.

Original languageEnglish
Pages (from-to)1166-1170
Number of pages5
JournalPhotochemical and Photobiological Sciences
Volume18
Issue number5
DOIs
Publication statusPublished - 1 Jan 2019

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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