Characterization and Application of Self-Assembly Porphyrin with Four "Clips" on Gold Surface

被引：25

作者：

Yang, Jiandong ^{[1
,2
]}

Li, Minrui ^{[1
,2
]}

Li, Hongxiang ^{[2
]}

Yang, Yanlian ^{[3
]}

Kashimura, Yoshiaki ^{[4
]}

Wang, Chen ^{[3
]}

Torimitsu, Keiichi ^{[4
]}

Lu, Xiaoquan ^{[1
]}

Hu, Wenping ^{[2
]}

机构：

[1] NW Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China

[2] Chinese Acad Sci, Lab Organ Solids, Inst Chem, Beijing 100080, Peoples R China

[3] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

[4] NTT Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 28期

关键词：

SCANNING-TUNNELING-MICROSCOPY; RIGID CONJUGATED POLYMER; TETRAPHENYLPORPHYRIN MONOLAYERS; PHOTOELECTROCHEMICAL PROPERTIES; ELECTRON-TRANSFER; FILMS; DIOXYGEN; METALLOPORPHYRINS; SPECTROSCOPY; CONDUCTANCE;

D O I：

10.1021/jp1020643

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Self-assembled monolayers (SAMs) of thiol-derivatized porphyrin molecules on Au substrate have attracted extensive interest for use in sensing, molecular recognition, and molecular electronics. Here, we synthesized tetra[p-(3-mercaptopropyloxy)phenyl]porphyrin (PPS4) with four "clips" for SAMs. The results demonstrated that PPS4 could form excellent SAMs on gold surface wherein the molecules oriented on substrates with a tilted angle. Self-assembled nanojunctions of PPS4 were fabricated by using gold nanogap electrodes (gap width: ca. 100 nm), which exhibited nonlinear current-voltage characteristics, indicating tunneling injection of current from Au electrodes into PPS4. With the light on/off, the nanojunctions switched between low/high impedance states as nanometer scaled photoswitchers.

引用

页码：12320 / 12324

页数：5

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