Unlocking intrinsically chiral bipyrenyl-based aggregation-induced emission luminogens: circularly polarized luminescence and dynamic chirality amplification.
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ABSTRACT: Understanding chiral dynamic mechanisms (from chirality generation and transfer, and amplification) is crucial for circularly polarized luminescent (CPL) materials. Herein, intrinsically chiral bipyrenyl-based enantiomers, R-5 and S-5, were first synthesized as model compounds to gain a deeper insight into their chiroptical properties and chirality amplification mechanisms. These enantiomers not only exhibit typical aggregation-induced emission (AIE) with a high solid-state fluorescence efficiency up to 0.66, but also display significant chirality amplification upon aggregation, with amplified |g CD| from 4.73 × 10-5 (10-7 M) to 7.34 × 10-3 (10-3 M), and |g lum| values up to 4.68 × 10-4
SUBMITTER: Xie Z
PROVIDER: S-EPMC12776029 | biostudies-literature | 2026 Feb
REPOSITORIES: biostudies-literature
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