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High performance optical oxygen sensors based on iridium complexes exhibiting interchromophore energy shuttling.
- Source :
-
Analyst . 5/21/2016, Vol. 141 Issue 10, p3090-3097. 8p. - Publication Year :
- 2016
-
Abstract
- A doubly pyrene-grafted bis-cyclometallated iridium complex with engineered electronically excited states demonstrates reversible electronic energy transfer between adjacent chromophores giving rise to extremely long-lived red luminescence in solution (τ = 480 μs). Time-resolved spectroscopic studies afforded determination of pertinent photophysical parameters including rates of energy transfer and energy distribution between constituent chromophores in the equilibrated excited molecule (ca. 98% on the organic chromophores). Incorporation into a nanostructured metal–oxide matrix (AP200/19) gave highly sensitive O2 sensing films, as the detection sensitivity was 200–300% higher than with the commonly used PtTFPP and approaches the sensitivity of the best O2-sensing dyes reported to date. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PYRENE
*IRIDIUM
*CHROMOPHORES
*ENERGY transfer
*NANOSTRUCTURED materials
Subjects
Details
- Language :
- English
- ISSN :
- 00032654
- Volume :
- 141
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Analyst
- Publication Type :
- Academic Journal
- Accession number :
- 115283781
- Full Text :
- https://doi.org/10.1039/c6an00497k