Axially-chiral boramidine for detailed (chir)optical studies.
Chem Sci
; 15(17): 6530-6535, 2024 May 01.
Article
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| MEDLINE
| ID: mdl-38699281
ABSTRACT
The inclusion of boron atoms into chiral π-conjugated systems is an effective strategy to unlock unique chiroptical properties. Herein, the preparation and characterization of a configurationally stable axially-chiral boramidine are reported, showcasing absorption in the UV domain, deep-blue fluorescence (Φ up to 94%), and ca. |10-3| gabs and glum values. Detailed photophysical studies and quantum-chemical calculations clearly elucidate the deactivation pathways of the emissive state to triplet excited states, involving increased spin-orbit coupling between the lowest singlet excited state and an upper triplet state.
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MEDLINE
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Chem Sci
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2024
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Article