Chitin Nanowhisker/Gold Nanocluster Hybrids with an Excellent Dispersion Stability via Poly(ethylene glycol) Grafting

被引：1
作者：
Araki, Jun [1 ]
Okuda, Hyougo [2 ]
机构：
[1] Shinshu Univ, Fac Text Sci & Technol, Ueda 3868567, Japan
[2] Shinshu Univ, Grad Sch Sci & Technol, Ueda 3868567, Japan
来源：
LANGMUIR | 2024年 / 40卷 / 42期
关键词：
CONJUGATED CELLULOSE NANOCRYSTALS; CHITOSAN; SUSPENSIONS; ALDEHYDE;
D O I：
10.1021/acs.langmuir.4c02404
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hybrid nanoparticles composed of chitin nanowhiskers (ChNWs) and gold nanoclusters (AuNCs) having an improved stability were prepared. The grafting of monomethoxypoly(ethylene glycol) (mPEG) and subsequent surface adsorption of AuNCs enabled the steric stabilization of ChNW/AuNC hybrids. mPEGs with terminal formyl groups and diethylacetal protecting groups were grafted via in situ deprotection and reductive amination with the surface amino groups (SAGs) of ChNWs. The treatment of chitin with a 30% sodium hydroxide solution improved the SAG contents of the ChNWs obtained from acid hydrolysis, resulting in an enhancement in mPEG grafting. The obtained sterically stabilized ChNW/AuNC hybrids exhibited remarkable dispersion stability at higher AuNC and electrolyte concentrations.
引用
收藏
页码：22077 / 22088
页数：12
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