材料科学
纳米团簇
MXenes公司
金属有机骨架
润湿
金属
纳米技术
表面改性
骨整合
涂层
钛
化学工程
复合材料
化学
有机化学
吸附
冶金
外科
工程类
植入
医学
作者
Chunlei Zhang,Guangyu Chu,Zesong Ruan,Ning Tang,Cunfeng Song,Qichao Li,Wenjie Zhou,Jiale Jin,Hossam Haick,Yunfeng Chen,Daxiang Cui
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-08-24
卷期号:16 (10): 16584-16597
被引量:10
标识
DOI:10.1021/acsnano.2c06030
摘要
Materials in nature feature versatile and programmable interactions to render macroscopic architectures with multiscale structural arrangements. By rationally combining metal–carboxylate and metal–organophosphate coordination interactions, Au25(MHA)18 (MHA, 6-mercaptohexanoic acid) nanocluster self-assembled structural color coating films and phytic acid (PA)–metal coordination complexes are sequentially constructed on the surface of titanium implants. The Lewis acid–base coordination principle applies for these metal–organic coordination networks. The isotropic arrangement of nanoclusters with a short-range order is investigated via grazing incidence wide-angle X-ray scattering. The integration of robust M–O (M = Ti, Zr, Hf) and labile Cu–O coordination bonds with high connectivity of Au25(MHA)18 nanoclusters enables these artificial photonic structures to achieve a combination of mechanical stability and bacteriostatic activity. Moreover, the colorless and transparent PA–metal complex layer allows the viewing of the structural color and surface wettability switching to hydrophilic and makes feasible the interfacial biomineralization of hydroxyapatite. Collectively, these modular metal–organic coordination-driven assemblies are predictive and rational material design strategies with tunable hierarchy and diversity. The complete metal–organic architectures will not only help improve the physicochemical properties of the bone–implant interface with synergistic antibacterial and osseointegration activities but also can boost surface engineering of medical metal implants
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