偶氮吡啶分子结的制备、表征及电学性质初步研究  

Fabrication, Characterization and Electric Properties of a Gold Nanowire Containing 4,4′-Azopyridine Molecular Junction

作　　者：向娟[1] 刘波[1] 田景华[1] 吴孙桃[2] 胡家文[1] 田中群[1] 

机构地区：[1]厦门大学固体表面物理化学国家重点实验室化学化工学院化学系 [2]厦门大学萨本栋微机电中心,厦门361005

出　　处：《高等学校化学学报》2005年第7期1342-1344,M009,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20021002)资助.

摘　　要：A study on the fabrication and characterization of gold nanowires containing a 4,4′-azopyridine monolayer junctions was reported. Au nanowires were prepared by using a two-step alternative current(AC) electrodeposition inside the pores of AAO. Azopyridine molecules were adsorbed on the top of Au layer by self-assembly and electroless plating was done to introduce Au caps on the top of the SAMs. The top Au segments were prepared by using AC electrodeposition, too. The HRTEM image shows the thickness of the SAM is approximately 1.5 nm, which is in good agreement with the theoretical length of azopyridine. It is demonstrated that direct AC electrodeposition was more effective than chemical deposition on strengthening the electronic device. Utilizing 4,4′-azopyridine as the active component, current-voltage characterization of nanowires containing molecules was done at room temperature by a two-point probe method by using a Keithley 4200 semiconductor characterization system. A good conductive behavior at room temperature in this electronic device was observed.A study on the fabrication and characterization of gold nanowires containing a 4,4′-azopyridine monolayer junctions was reported. Au nanowires were prepared by using a two-step alternative current(AC) electrodeposition inside the pores of AAO. Azopyridine molecules were adsorbed on the top of Au layer by self-assembly and electroless plating was done to introduce Au caps on the top of the SAMs. The top Au segments were prepared by using AC electrodeposition, too. The HRTEM image shows the thickness of the SAM is approximately 1.5 nm, which is in good agreement with the theoretical length of azopyridine. It is demonstrated that direct AC electrodeposition was more effective than chemical deposition on strengthening the electronic device. Utilizing 4,4′-azopyridine as the active component, current-voltage characterization of nanowires containing molecules was done at room temperature by a two-point probe method by using a Keithley 4200 semiconductor characterization system. A good conductive behavior at room temperature in this electronic device was observed.

关 键 词：分子结 分子器件 4 4′-偶氮吡啶 电场诱导自组装 电流-电压特性 

分 类 号：O64[理学—物理化学]