胶粘剂
材料科学
光热治疗
自愈水凝胶
自愈
纳米棒
表面改性
纳米复合材料
聚合
化学工程
光热效应
胶体金
聚合物
纳米技术
纳米颗粒
高分子化学
自组装
复合材料
图层(电子)
替代医学
病理
工程类
医学
作者
Shuo Lin,Sirui Jiang,Yuchen Zhang,Zheng-Wei Dai,Yu Dai,Fan Xia,Xiaojin Zhang
出处
期刊:Gold bulletin
[Springer Nature]
日期:2021-01-22
卷期号:54 (1): 59-67
被引量:6
标识
DOI:10.1007/s13404-021-00293-6
摘要
Gold nanorod (AuNR) nanocomposite hydrogels have attracted increasing attention due to the photothermal effect of AuNRs. However, a facile strategy that avoids multi-step surface modification for synthesis of AuNR crosslinkers is still a critical challenge. Here, AuNRs crosslinking PNIPAM hydrogels were prepared by polymerization of NIPAM with N,N′-bis(acryloyl)cystamine (BACA)-modified AuNRs as crosslinkers. BACA contains a disulfide bond in the structure. Dynamic and reversible Au-thiolate bonding was formed by directly mixing AuNRs and BACA to facilely prepare AuNR crosslinkers before hydrogel formation. The addition of AuNRs gives hydrogels their photothermal effect and remarkable mechanical behaviors. Hydrogels could repeatedly adhere to the surface of pigskin, metal, plastic, and glass with a relatively stable adhesion. The damaged hydrogels heal within 2 min with near-infrared (NIR) laser (808 nm, 300 mW∙cm−2) irradiation. This work provides a line of thinking for improvement of PNIPAM hydrogels, making them promising for further applications in biomedicine.
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