title: A rapidly self-healing supramolecular polymer hydrogel with photostimulated room-temperature phosphorescence responsiveness.
abstract: Development of self-healing and photostimulated luminescent supramolecular polymeric materials is important for artificial soft materials. A supramolecular polymeric hydrogel is reported based on the host-guest recognition between a β-cyclodextrin (β-CD) host polymer (poly-β-CD) and an α-bromonaphthalene (α-BrNp) polymer (poly-BrNp) without any additional gelator, which can self-heal within only about one minute under ambient atmosphere without any additive. This supramolecular polymer system can be excited to engender room-temperature phosphorescence (RTP) signals based on the fact that the inclusion of β-CD macrocycle with α-BrNp moiety is able to induce RTP emission (CD-RTP). The RTP signal can be adjusted reversibly by competitive complexation of β-CD with azobenzene moiety under specific irradiation by introducing another azobenzene guest polymer (poly-Azo).
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai 200237 (P. R. China).
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Xiang
authors.initials: X
authors.lastname: Ma
authors.forename: Shuaifan
authors.initials: S
authors.lastname: Wu
authors.forename: He
authors.initials: H
authors.lastname: Tian
mesh_terms: D005453:Fluorescence; D020100:Hydrogels / Q000138:chemical synthesis* / Q000737:chemistry; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry; D055668:Photochemical Processes; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D013696:Temperature; D047392:beta-Cyclodextrins / Q000737:chemistry
chemical_list: D020100:Hydrogels; D046911:Macromolecular Substances; D009281:Naphthalenes; D011108:Polymers; D047392:beta-Cyclodextrins; C108222:alpha-bromonaphthalene; C031215:betadex
keywords: hydrogels; photostimulation; room-temperature phosphorescence; self-healing; supramolecular polymers