Abstract
Aggregation-induced emission (AIE) luminogens have been widely used in various fields. Among them, BioAIEgens (AIEgens from natural resources) have been highly concerned by researchers because of their unique advantages. However, the number of BioAIEgens directly derived from nature is limited. Therefore, chemical modification on natural resources may be an effective way to obtain more BioAIEgens. In this paper, because the rigid alicyclic ring of dehydroabietic acid (DA) has the effect of restricting molecular motion, we successfully obtained two rosin-based BioAIEgens (DAA-TPA and DAMBA-TPA) by combining DA with triphenylamine. Interestingly, DAA-TPA obtained by connecting TPA with the aliphatic ring of DA has TICT-AIE and strong solid-state emission properties, while DAMBA-TPA obtained by connecting TPA with the aromatic ring of DA shows an atypical AIE and weak solid emission effect. Two control molecules were designed to investigate the influence of the introduction of aliphatic ring and aromatic ring on the photophysical properties of TPA. The results showed that DA containing both aliphatic ring and aromatic ring may be used as a precursor to construct BioAIEgens with different AIE properties. In addition, based on the fluorescence performance of DAA-TPA, we applied it to the detection of trace water in acetonitrile (ACN).
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