Dipole Assisted Photogated Switch in Spiropyran Grafted Polyaniline Nanowires

被引：44

作者：

Bardavid, Yosef ^{[1
]}

Goykhman, Ilya ^{[2
]}

Nozaki, Daijiro ^{[3
,4
]}

Cuniberti, Gianaurelio ^{[3
,4
]}

Yitzchaik, Shlomo ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, Inst Chem, IL-91904 Jerusalem, Israel

[2] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, Dept Appl Phys, IL-91904 Jerusalem, Israel

[3] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

[4] Tech Univ Dresden, Max Bergmann Ctr Biomat, D-01062 Dresden, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 07期

关键词：

FIELD-EFFECT TRANSISTORS; PRUSSIAN BLUE; IRON-OXIDE; AMPHIPHILIC AZOBENZENE; MAGNETIC VESICLES; NANOPARTICLES; FILMS; DERIVATIVES; SUBSTRATE; POLYMERS;

D O I：

10.1021/jp110665j

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：

In this work we show dipole-assisted photogated switching by covalent grafting of photoactive molecules to conducting polymers. Photochromic spiropyran molecules were covalently attached to polyaniline (PANI) nanowires via N-alkylation reaction to the quinoic part of PANI. Upon irradiation with ultraviolet light spiropyran transformed to a large dipole containing molecule, merocyanine form. We show that this transformation leads to a substantial (ca. 2 orders of magnitude) increase in conductance of the photochromic PANI nanowires, which were evident by an increase in field-effect mobility and calculated band gap narrowing of the system. Finally, this transformation was found to be fully reversible with no significant photofatigue.

引用

页码：3123 / 3128

页数：6

共 44 条

[1] Scanning photocurrent imaging and electronic band studies in silicon nanowire field effect transistors [J].

Ahn, Y ;

Dunning, J ;

Park, J .

NANO LETTERS, 2005, 5 (07) :1367-1370

[2] Carbon-nanotube photonics and optoelectronics [J].

Avouris, Phaedon ;

Freitag, Marcus ;

Perebeinos, Vasili .

NATURE PHOTONICS, 2008, 2 (06) :341-350

[3] Spiropyrans and spirooxazines for memories and switches [J].

Berkovic, G ;

Krongauz, V ;

Weiss, V .

CHEMICAL REVIEWS, 2000, 100 (05) :1741-1753

[4]

CHEN SA, 1993, CHEM RAPID COMMUN, V14, P63

[5] Pyrrole and polypyrrole-based liquid crystals containing azobenzene mesogenic groups [J].

Chen, Y ;

Harrison, WTA ;

Imrie, CT ;

Ryder, KS .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (03) :579-585

[6] POLYANILINE - PROTONIC ACID DOPING OF THE EMERALDINE FORM TO THE METALLIC REGIME [J].

CHIANG, JC ;

MACDIARMID, AG .

SYNTHETIC METALS, 1986, 13 (1-3) :193-205

[7] Polyaniline micropattern onto flexible substrate by vapor deposition polymerization-mediated inkjet printing [J].

Cho, Joonhyuk ;

Shin, Kyoung-Hwan ;

Jang, Jyongsik .

THIN SOLID FILMS, 2010, 518 (18) :5066-5070

[8] Photofunctional vesicles containing prussian blue and azobenzene [J].

Einaga, Y ;

Sato, O ;

Iyoda, T ;

Fujishima, A ;

Hashimoto, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (15) :3745-3750

[9] Magnetization increase of iron oxide by photoinduced aggregation of spiropyran [J].

Einaga, Y ;

Taguchi, M ;

Li, GM ;

Akitsu, T ;

Gu, ZZ ;

Sugai, T ;

Sato, O .

CHEMISTRY OF MATERIALS, 2003, 15 (01) :8-10

[10] Reversible photocontrollable magnetic vesicles consisting of azobenzene [J].

Einaga, Y ;

Yamamoto, T ;

Sugai, T ;

Sato, O .

CHEMISTRY OF MATERIALS, 2002, 14 (11) :4846-4850

← 1 2 3 4 5 →