학술논문
Solvent-free synthesis and chiroptical properties of a C–N axially chiral cruciform dimer of benzo[b]phenoxazine.
Document Type
Article
Source
Subject
*PHOSPHORESCENCE
*RACEMIZATION
*X-rays
*FLUORESCENCE
*MOLECULES
*CINCHONA alkaloids
*ENANTIOMERS
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Language
ISSN
1359-7345
Abstract
A novel C–N axially chiral molecule composed of two tert-butyl-substituted benzo[b]phenoxazine (BPO) was synthesized via solvent-free reactions. The absolute configurations of the enantiomers were determined by X-ray single-crystal analysis. The enantiomers had a sufficiently high racemization barrier to ignore racemization at room temperature (149 ± 20 kJ mol−1), and the solutions exhibited dual circularly polarized emissions stemming from fluorescence and phosphorescence of ‖gCPL‖ = ca. 1 × 10−3. [ABSTRACT FROM AUTHOR]