摘要
In this work,a spherical calixpyridinium-IR-820 supramolecular assembled material was fabricated based on the calixpyridiniuminduced IR-820 aggregation.This assembled material exhibited a well visible light responsiveness by the photodecomposition of aggregated IR-820 accompanied by an obvious color change.Such photochromic material has many potential applications.More interestingly,the photodecomposition of aggregated IR-820 was significantly promoted,although the aggregated photosensitizers usually exhibited a lower photoreactivity.This approach can be further extended to construct various visible-light responsive supramolecular assembled materials and potentially applied in many fields.Herein,benefitting from the pH-dependent luminescent properties of calixpyridinium and the photodegradation products of IR-820,a pH-controlled visual multicolor luminescence was achieved,which was perfectly applied in the detection of pH from 5 to 10 by naked eyes.
基金
We thank the Natural Science Foundation of Tianjin City(20JCYBJC00330)
the National Natural Science Foundation of China(21402141)for financial support.
