In this study, a supramolecular polymer with aggregation-induced emission was constructed through host-guest interactions. The polymer showed potential as a highly effective photocatalyst for the photocatalytic oxidative coupling reaction of amines to imines, with a high yield of the desired product observed.
In this study, we have developed and produced a derivative of tetraphenylethene (TPE-Epy) and demonstrated its ability to undergo self-assembly with cucurbit[8]uril (CB[8]) via host-guest interactions, which lead to the formation of supramolecular polymers (TPE-Epy-CB[8]) exhibiting aggregation-induced emission when placed in an aqueous solution. The photophysical properties of TPE-Epy are enhanced when it is encapsulated within the CB[8] cavity of supramolecular polymers, which can be used as photosensitizers. This is attributed to the host-guest interactions between TPE-Epy and CB[8], which restrict the intramolecular motion of TPE-Epy. Consequently, the supramolecular polymers exhibit a high efficiency in generating reactive oxygen species (ROS). Significantly, owing to its notable effectiveness in generating ROS, TPE-Epy-CB[8] exhibits promising potential as a highly effective photocatalyst for facilitating the photocatalytic oxidative coupling reaction of amines to imines. This reaction can produce up to 90% of the desired product when conducted in an aqueous solution. In this study, we have constructed a supramolecular polymer with aggregation-induced emission through host-guest interactions, which can be used as photocatalysts for photocatalytic oxidative coupling reaction of amines to imines.
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