Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 9, Issue 29, Pages 9142-9146Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc01792f
Keywords
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Funding
- National Natural Science Foundation of China [21363014, 21103082]
- Natural Science Foundation of Jiangxi Province of China [20142BCB23003, 20143ACB21021]
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A non-covalent strategy utilizing bionic paired hydrogen-bond interactions is used to extend the pi-conjugation of fluorophores, resulting in molecules with highly efficient dual-state emission in a red-shifted region and unique emission characteristics.
Herein, we first demonstrate a non-covalent strategy that extends the pi-conjugation of fluorophores through bionic paired hydrogen-bond interactions. In well-designed molecular models, 1,8-naphtholactam (Np)-equipped molecules (TPE/HTPE-Np) exhibit highly efficient dual-state emission in a red-shifted region, whereas their acenaphthene (Ap)-equipped counterparts (TPE/HTPE-Ap) reserve typical AIE behaviors with short-wavelength emission. Single-crystal and theoretical analyses prove that these bionic hydrogen-bond interactions enable the facile formation of dimeric TPE/HTPE-Np, resulting in their larger delocalized pi-electron conjugation, thereby playing a crucial role in their unique emission characteristics.
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