Dual-template cascade synthesis of highly multi-branched Au nanoshells with ultrastrong NIR absorption and efficient photothermal therapeutic intervention. Issue 4 (2nd January 2019)

• Record Type: Journal Article
• Authors: Bian, Kexin; Zhang, Xuwu; Yang, Mengxue; Luo, Liyao; Li, Lei; He, Yuchu; Cong, Cong; Li, Xiaoling; Zhu, Ruiyan; Gao, Dawei
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 4(2018)
• Page Start: 598
• Page End: 610
• Publication Date: 2019-01-02
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Biomedical materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tb02753f
• Languages: English
• ISSNs: 2050-750X

Abstract

Abstract : A universal dual-template cascade strategy for the synthesis of multi-branched gold nanoshells with ultrastrong NIR absorption for tumor photothermal therapy. Abstract : With the rapid development of photothermal therapy (PTT) in cancer treatment, it is necessary to obtain effective plasma-responsive tunable photothermal transducing agents. Inspired by the peptide-directed hierarchical mineralized Ag nanocages (Ag NCs), scientists designed a new duel-template cascade preparation method, and novel unique multi-branched gold nanoshells (BGSs) were successfully prepared under mild conditions using green strategy. The length, density and diameter of the branches were tuned, which led to the adjustment of the surface plasma response of the nanostructure. Because of the hierarchical structure and anisotropic surface, an obvious red shift of the local surface plasmon resonance spectrum was observed for the branched Au nanoshells. The excellent photothermal conversion efficiency (70.9%) and photo-induced heating responsive curves proved the superior photothermal conversion performance and photothermal stability of BGSs. The in vitro and in vivo results indicated that the heat generated by the intense NIR absorption of BGSs can selectively destroy cancer cells under laser irradiation. The nanostructures with ultrastrong absorption have promising prospects in tumor therapy.