小分子诱导贵金属基复合纳米结构的组装及其应用
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- 英文论文题名：Small Molecule Induced Self-assembly of Nobel Metal-based Nanostructures and Their Applications
- 论文作者：费进波 ; 崔光晨 ; 李峻柏
- 英文论文作者：Jinbo Fei ; Guangchen Cui ; Junbai Li ; Institute of Chemistry ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院化学研究所;
- 论文关键词：自组装 ; 配位 ; 螺旋 ; 小分子 ; 催化
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：184k
- 原文格式：D
- 会议级别：全国
摘要
贵金属基复合纳米结构在生物医药、环境治理以及能源开发等领域展现出了良好的应用前景。我们利用分子组装策略嫁接化学合成方法,构筑了系列具有规则多级纳米结构的贵金属基复合材料。小分子三聚氰胺、刚果红分别与硝酸银在水溶液中通过分子间不对称配位作用形成螺旋纳米复合物。该纳米复合物可通过光还原原位构筑准一维银纳米链。进一步地,借助溶胶-凝胶法,利用瑞利不稳定性原理,控制煅烧温度可控组装TiO_2-Ag多孔纳米管和纳米球,其具有等离子增强的可见光催化效能。另外,利用生物小分子茶多酚与贵金属离子配位作用形成的超分子复合物为模板,结合绿色介质下的微波化学和原位生物矿化,超快(少于1分钟)可控组装了系列贵金属@茶多酚核-壳纳米结构。银@茶多酚纳米颗粒能高效选择性杀伤大肠杆菌而对正常细胞没有明显伤害,这将促进其作为优异抗菌生物材料开展临床应用。
Dual-stimuli-responsive nanohelix is reversibly assembled through asymmetric coordination between Ag and-NH_2 in symmetric melamine and Congo red.Furthermore,one-dimensional silver nanochains composed of zero-dimensional nanoparticles can be prepared by reduction under light illumination.This simple strategy could be extended to assembly of other similar metal nanoparticles.Furthermore,templating supramolecular assembly above,porous TiO_2/Ag nanotubes and nanospheres with plasmon-enhanced photocatalysis were fabricated in a controlled manner for water treatment.Moreover,large-scale autofluorescent polyphenol-based core@shell nanocomposites can be assembled by one-pot preparation under microwave irradiation within 1 minute.The strategy above is general to construct Ag@polyphenol and Au@polyphenol nanocomposites.As a typical application,it is very interesting to find out that Ag@polyphenol nanocomposites can strongly inhibit E.Coli growth,while they exhibit no obvious normal cell toxicity.The sharp contrasts of two effects above will lead to a great potential biomedical application as excellent antibacterial materials.
Dual-stimuli-responsive nanohelix is reversibly assembled through asymmetric coordination between Ag and-NH_2 in symmetric melamine and Congo red.Furthermore,one-dimensional silver nanochains composed of zero-dimensional nanoparticles can be prepared by reduction under light illumination.This simple strategy could be extended to assembly of other similar metal nanoparticles.Furthermore,templating supramolecular assembly above,porous TiO_2/Ag nanotubes and nanospheres with plasmon-enhanced photocatalysis were fabricated in a controlled manner for water treatment.Moreover,large-scale autofluorescent polyphenol-based core@shell nanocomposites can be assembled by one-pot preparation under microwave irradiation within 1 minute.The strategy above is general to construct Ag@polyphenol and Au@polyphenol nanocomposites.As a typical application,it is very interesting to find out that Ag@polyphenol nanocomposites can strongly inhibit E.Coli growth,while they exhibit no obvious normal cell toxicity.The sharp contrasts of two effects above will lead to a great potential biomedical application as excellent antibacterial materials.
引文
[1]Fei,J.;Gao,L.;Zhao,J.;Du,C.;Li,J.Small 2013,9:1021.
[2]Fei,J.;Li,J.Adv.Mater.2015,27:314.
[3]Fei,J.;Cui,Y.;Zhu,P.;Wang,A.;Li,J.Chem.Commun.2010,46:2310.
[4]Fei,J.;Zhao,J.;Wang,A.;Zhang,H.;Dai,L.;Li,J.ACS Nano 2014,8:8529.
[2]Fei,J.;Li,J.Adv.Mater.2015,27:314.
[3]Fei,J.;Cui,Y.;Zhu,P.;Wang,A.;Li,J.Chem.Commun.2010,46:2310.
[4]Fei,J.;Zhao,J.;Wang,A.;Zhang,H.;Dai,L.;Li,J.ACS Nano 2014,8:8529.