1. Silver Metallic Cyclodextrin‐Core Star mPEG.
- Author
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Liang, Jianghu, Liu, Yuyang, and Zhang, Xiaoyu
- Subjects
- *
SODIUM borohydride , *OXIDATION-reduction reaction , *SILVER ions , *SILVER nanoparticles , *METHYLENE blue , *SILVER , *STAR-branched polymers - Abstract
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 1H 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 (NaBH4). [ABSTRACT FROM AUTHOR]
- Published
- 2019
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