Photo-Controlled [4+4] Cycloaddition of Anthryl-Polymer Systems: A Versatile Approach to Fabricate Functional Materials.

Autor: Paderes MC; Institute of Chemistry, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines., Jeffrey Diaz M; Institute of Chemistry, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines., Pagtalunan CA; Institute of Chemistry, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines., Bruzon DA; Materials Science and Engineering, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines., Tapang GA; National Institute of Physics, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines.
Jazyk: angličtina
Zdroj: Chemistry, an Asian journal [Chem Asian J] 2022 Jun 15; Vol. 17 (12), pp. e202200193. Date of Electronic Publication: 2022 May 11.
DOI: 10.1002/asia.202200193
Abstrakt: The reversible photo-induced [4+4] cycloaddition reaction of anthracene enables multiple cycles of dimerization and scission, allowing phototunable linkage of molecular fragments for the synthesis of polymer scaffolds. New functional materials ranging from hydrogels to shape-memory polymers were designed from anthryl-polymer systems because of their diverse photochemical reactivity and responsiveness. Light as an external stimulus allows for the remote and precise spatiotemporal control of materials without the need for additional reagents. Depending on how the photoreactive anthracene moieties were introduced, the interaction of anthryl-polymer systems with light results in various processes such as polymerization, cyclization, and cross-linking. Structural modifications of anthracene derivatives could shift their absorption from the ultraviolet to the visible light region, widening their range of applications including biologically relevant studies. These applications are further diversified and enhanced by the reversibility of the dimerization reaction using light and heat as stimuli. In this review, current developments in the synthesis and photodimerization of anthracene-containing polymers and their emerging applications in the fabrication of new materials are discussed.
(© 2022 Wiley-VCH GmbH.)
Databáze: MEDLINE
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