Unsymmetrical Triphenylamine–Cyanostilbene Donor–Acceptor Fluorophores: π-Spacer-Controlled Charge Transfer and Aggregation- Dependent Luminescence
This study demonstrates that substituting the phenyl π-spacer with a thiophene unit in unsymmetrical triphenylamine–cyanostilbene fluorophores not only red-shifts emission and enhances charge transfer but also switches the aggregation behavior from quenching (ACQ) to enhancement (AIEE), highlighting the critical role of π-spacer engineering in designing high-performance solid-state organic luminophores.
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