恒择8个碳链长度的烷基双硫醇分子在电极表面自组装构筑Au-SHSAM模板，然后将由弱保护剂四辛基溴化铵(TOAB)稳定的小尺寸Au、Ag、Pd和Pt纳米粒子通过纳米粒子与电极上巯基之间的强相互作用(M-S)将其表面的弱保护剂 TOAB 替换的方式，成功实现了贵金属纳米粒子在巯基模板电极表面的自组装，利用循环伏安法(CV)和扫描隧道显微镜(STM)对纳米粒子怱饰电极在H2SO4溶液中的电化学行为以及纳米粒子在电极表面的形貌进行了表征，发现可以通过调节浸泡时间控制纳米粒子在电极表面的覆盖度。该方法新颖、简单而且具有一定的普适性。
The template electrode of Au-SHSAM modified by dithiol which with 8 carbon alkyl chain length was self-assembled, and then little size nanoparticles of Au, Ag, Pd, Pt which protected by the weak protective agent, tetraoctyl bromide (TOAB), were anchored on the electrode surface to obtain stable nanoparticles modified electrode by ligand exchange method, due to the strong interaction between the dithiol group on the electrode and nanoparticles (M-S) ,The electrode modified by dithiol would replace weak protective agent (TOAB) which on nanoparticles surface. The electrochemical behavior in H2SO4 solution and the morphology of nanoparticles on dithiol template electrode surface was characterized by cyclic voltammetry(CV) and scanning tunneling microscopy (STM). Then we found that the coverage of nanoparticles on the electrode surface could be controlled by adjusting soak time in nanoparticles collosol. The approach is original, simple, and has certain universal.
参考文献
| [1] | Clemens Burda;Xiaobo Chen;Radha Narayanan;Mostafa A.EI-Sayed .Chemistry and Properties of Nanocrystals of Different Shapes[J].Chemical Reviews,2005(4):1025-1102. |
| [2] | Ozbay E Plasmonies .Merging photonics and electronics at nanoscale dimensions[J].SCIENCE,2006,311(5758):189-193. |
| [3] | Mason M G .Electronic structure of supported small metal clusters[J].Physical Review B,1983,27(2):748-762. |
| [4] | 孟庆泉,叶青松,刘伟平,王亚明.负载型贵金属催化剂在药物合成中的应用[J].贵金属,2012(03):78-82. |
| [5] | Ming-Sheng Hsu;Yu-Liang Chen;Chi-Young Lee .Gold Nanostructures on Flexible Substrates as Electrochemical Dopamine Sensors[J].ACS applied materials & interfaces,2012(10):5570-5575. |
| [6] | Abad, JM;Mertens, SFL;Pita, M;Fernandez, VM;Schiffrin, DJ .Functionalization of thioctic acid-capped gold nanoparticles for specific immobilization of histidine-tagged proteins[J].Journal of the American Chemical Society,2005(15):5689-5694. |
| [7] | Abraham Nitzan;Mark A. Ratner .Electron Transport in Molecular Wire Junctions[J].Science,2003(5624):1384-1389. |
| [8] | Feng Shi;Qinghua Zhang;Yubo Ma;Yude He;Youquan Deng .From CO Oxidation to CO_2 Activation:An Unexpected Catalytic Activity of Polymer-Supported Nanogold[J].Journal of the American Chemical Society,2005(12):4182-4183. |
| [9] | Fu, YC;Li, PH;Wang, T;Bu, LJ;Xie, QJ;Xu, XH;Lei, LH;Zou, C;Chen, JH;Yao, SZ .Novel polymeric bionanocomposites with catalytic Pt nanoparticles label immobilized for high performance amperometric immunoassay[J].Biosensors & Bioelectronics: The International Journal for the Professional Involved with Research, Technology and Applications of Biosensers and Related Devices,2010(7):1699-1704. |
| [10] | Guoqin Chen;Yunhua Li;Dong Wang;Li Zheng;Guirong You;Chuan-Jian Zhong;Lefu Yang;Fan Cai;Junxiu Cai;Bing H. Chen .Carbon-supported PtAu alloy nanoparticle catalysts for enhanced electrocatalytic oxidation of formic acid[J].Journal of Power Sources,2011(20):8323-8330. |
| [11] | Hai-Ying Gu;Ai-Min Yu;Hong-Yuan Chen .Direct electron transfer and characterization of hemoglobin immobilized on a Au colloid-cysteamine-modified gold electrode[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2001(1/2):119-126. |
| [12] | Liu GD;Riechers SL;Mellen MC;Lin YH .Sensitive electrochemical detection of enzymatically generated thiocholine at carbon nanotube modified glassy carbon electrode[J].Electrochemistry communications,2005(11):1163-1169. |
| [13] | Li, C.;Wang, H.;Yamauchi, Y. .Electrochemical deposition of mesoporous Pt-Au alloy films in aqueous surfactant solutions: Towards a highly sensitive amperometric glucose sensor[J].Chemistry: A European journal,2013(7):2242-2246. |
| [14] | Ei-Deab M S;Sotomura T;Ohsaka T .Fabrication of phase-separated multicomponent self-assembied mono-layers at gold nanoparticles electrodeposited on glassy carbon elect rodes[J].Eletrochemical Society,2006,153(12):201-206. |
| [15] | Kolb D M;Ullmann R;Will T .Nanofabrication of small copper clusters on gold(111)electrodes by a scanning tunneling microscope[J].SCIENCE,1997,275(5303):1097-1099. |
| [16] | Kolb DM.;Ziegler JC.;Engelmann GE. .Nanoscale decoration of electrode surfaces with an STM[J].Solid state ionics,2000(1/2):69-78. |
| [17] | Jensen PS;Chi Q;Grumsen FB;Abad JM;Horsewell A;Schiffrin DJ;Ulstrup J .Gold nanoparticle assisted assembly of a heme protein for enhancement of long-range interfacial electron transfer[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(16):6124-6132. |
| [18] | Abad, JM;Gass, M;Bleloch, A;Schiffrin, DJ .Direct Electron Transfer to a Metalloenzyme Redox Center Coordinated to a Monolayer-Protected Cluster[J].Journal of the American Chemical Society,2009(29):10229-10236. |
| [19] | Tetsu Yonezawa;Toyoki Kunitake .Practical preparation of anionic mercapto ligand-stabilized gold nanoparticles and their immobilization[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,1999(1/3):193-199. |
| [20] | Shein J B;Lai L;Eggers P K et al.Formation of efficient charge transfer pathways by adsorbing gold nanoparticles to self-assembled monolayer modified electrodes[J].LANGMUIR,2009,25(18):11121-11128. |
| [21] | Liu, F.;Khan, K.;Liang, J.-H.;Yan, J.-W.;Wu, D.-Y.;Mao, B.-W.;Jensen, P.S.;Zhang, J.;Ulstrup, J. .On the hopping efficiency of nanoparticles in the electron transfer across self-assembled monolayers[J].Chemphyschem: A European journal of chemical physics and physical chemistry,2013(5):952-957. |
| [22] | Fink J.;Bethell D.;Schiffrin DJ.;Kiely CJ. .Self-organization of nanosized gold particles[J].Chemistry of Materials,1998(3):922-926. |
| [23] | 刘锋,顾永万,胡晋铨,悟冬霞,贺小昆,卢军,赵云昆.有机两相法制备巯基羧酸修饰的小尺寸贵金属纳米粒子[J].贵金属,2014(03):1-5. |
| [24] | Hagenstr?m H;Schneeweiss M A;Kolb D M .Modifi-cation of a Au(111)electrode with ethanethiol. 1. Adlayer structure and electrochemistry[J].Langmuir,1999,15(7):2435-2443. |
| [25] | Jarred B. Shein;Leo M. H. Lai;Paul K. Eggers;Michael N. Paddon-Row;J. Justin Gooding .Formation of Efficient Electron Transfer Pathways by Adsorbing Gold Nanoparticles to Self-Assembled Monolayer Modified Electrodes[J].Langmuir: The ACS Journal of Surfaces and Colloids,2009(18):11121-11128. |
| [26] | Aliganga AKA;Duwez AS;Mittler S .Binary mixtures of self-assembled monolayers of 1,8-octanedithiol and 1-octanethiol for a controlled growth of gold nanoparticles[J].Organic electronics,2006(5):337-350. |
| [27] | Chao-Cheng Kaun;Hong Guo .Resistance of Alkanethiol Molecular Wires[J].Nano letters,2003(11):1521-1525. |
| [28] | Kenichi Murata;Kazuki Kajiya;Megumi Nukaga;Yosuke Suga;Toshiyuki Watanabe;Nobuhumi Nakamura;Hiroyuki Ohno .A Simple Fabrication Method for Three-Dimensional Gold Nanoparticle Electrodes and Their Application to the Study of the Direct Electrochemistry of Cytochrome c[J].Electroanalysis,2010(2):185-190. |
| [29] | H. Liu;F. Favier;K. Ng;M. P. Zach;R. M. Penner .Size-selective electrodeposition of meso-scale metal particles: a general method[J].Electrochimica Acta,2001(5):671-677. |
| [30] | Engelbrekt, C.;S?rensen, K.H.;Lübcke, T.;Zhang, J.;Li, Q.;Pan, C.;Bjerrum, N.J.;Ulstrup, J. .1.7 nm platinum nanoparticles: Synthesis with glucose starch, characterization and catalysis[J].Chemphyschem: A European journal of chemical physics and physical chemistry,2010(13):2844-2853. |
| [31] | Soreta, T.R.;Strutwolf, J.;Henry, O.;O'Sullivan, C.K. .Electrochemical surface structuring with palladium nanoparticles for signal enhancement[J].Langmuir: The ACS Journal of Surfaces and Colloids,2010(14):12293-12299. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%