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Silver Metallic Cyclodextrin‐Core Star mPEG
Author(s) -
Liang Jianghu,
Liu Yuyang,
Zhang Xiaoyu
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800562
Subject(s) - sodium borohydride , aqueous solution , chemistry , cyclodextrin , alkyne , aldehyde , catalysis , click chemistry , nuclear chemistry , metal ions in aqueous solution , metal , ethylene glycol , inorganic chemistry , polymer chemistry , organic chemistry
A novel silver metallic β‐cyclodextrin (β‐CD)‐core star methoxypolyethylene glycol (mPEG) (SM‐CD‐SPEG) is presented. For this, a well‐defined water‐soluble β‐CD‐core star mPEG with aldehyde groups (CD‐star(ald)PEG, III ) is first designed and synthesized via the copper‐catalyzed azide–alkyne click reaction. Then, silver nanoparticles are formed within III through the oxidation–reduction reaction between the aldehyde groups and silver ions. The oxidation–reduction reaction is characterized by means of 1 H NMR spectra. And the preparation conditions of SM‐CD‐SPEG are optimized. The resulting SM‐CD‐SPEG aqueous solutions exhibit good stability and a unimolecular micelle morphology. Significantly, it is able to obtain solid SM‐CD‐SPEG samples with molecular water‐solubility. This is convenient for storage and further application of SM‐CD‐SPEG. The SM‐CD‐SPEG samples also show good catalytic performance toward the reduction reaction of methylene blue (MB) by sodium borohydride (NaBH 4 ).