Redox-responsive, reversibly fluorescent nanoparticles from sustainable cellulose derivatives
2014 | journal article. A publication with affiliation to the University of Göttingen.
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- Authors
- Li, Wei ; Wang, Wei; Yang, Yongbiao; Zhang, Kai
- Abstract
- In comparison to single-stimuli responsive cellulose derivatives, multi-stimuli and reversibly responsive compounds from cellulose are still scarce. In this report, the fabrication of redox-controllable nanoparticles (NPs) from novel cellulose derivatives containing thiol groups and rhodamine spiroamide showing reversible fluorescence is described. The thiol groups were introduced into cellulose chains after esterification by 3,3′-dithiodipropionic acid and further reductive cleavage of disulfide bonds. Then, rhodamine spiroamide was immobilized via thiol–ene reaction between cellulose thiopropionyl ester and rhodamine B methacrylamide. The obtained cellulose derivative containing rhodamine spiroamide (cellulose-RhBMA) could be transformed into NPs in aqueous medium and dissolved again via redox reactions on thiol groups. At the same time, cellulose-RhBMA exhibited reversible fluorescence that could be switched using pH (protons) or UV-illumination/heating as external stimuli. In total, we demonstrated the fabrication of redox-controllable NPs with reversible fluorescence, and a novel platform for the chemical modification of cellulose via thiol–ene reaction.
- Issue Date
- 2014
- Journal
- Journal of Materials Chemistry. A, Materials for Energy and Sustainability
- Organization
- Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Holztechnologie und Holzwerkstoffe ; Juniorprofessur Holztechnologie und Holzchemie
- Language
- English