Multistimuli-Responsive and Photocontrolled Supramolecular Luminescent Gels Constructed by Anthracene-Bridged Bis(dibenzo-24-crown-8) with Secondary Ammonium Salt Polymer

• Published in: ACS applied materials & interfaces Vol. 11; no. 17; pp. 16117 - 16122
• Main Authors: Fu, Hong-Guang, Chen, Yong, Liu, Yu
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 01-05-2019
• Subjects: supramolecular assembly; photoresponsiveness; noncovalent interactions; gel−sol transition; crown ether; single crystal
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/acsami.9b04323

A novel multistimuli-responsive and photcontrolled supramolecular luminescent gel is fabricated from anthracene-bridged bis­(dibenzo-24-crown-8) (1) and secondary ammonium salt-functionalized graft polymer (3). X-ray crystallographic analysis reveals that the dibenzo-24-crown-8 (DB24C8) ring is located at the opposite site of 1, which will greatly hinder the mutual intermolecular π–π stacking between anthracene groups. By taking advantage of the controllable binding of 1 with 3, the unique gel–sol transition could occur under different temperatures, pH, and competitive guest bindings. Benefiting from the photo-oxygenation of anthracene, the luminescence behavior of the supramolecular gel could be switched off and on under UV light (365 nm) and heating treatment, which provides a new approach for constructing photocontrolled supramolecular luminescent gel.