Supramolecular π-stacked assemblies of bis(urea)-substituted thiophene derivatives and their electronic properties probed with scanning tunneling microscopy and scanning tunneling spectroscopy

被引：73

作者：

Gesquière, A

De Feyter, S

De Schryver, FC

Schoonbeek, F

van Esch, J

Kellogg, RM

Feringa, BL

机构：

[1] Katholieke Univ Leuven, Dept Chem, Lab Mol Dynam & Spect, B-3001 Heverlee, Belgium

[2] Univ Groningen, Lab Organ & Inorgan Mol Chem, NL-9747 AG Groningen, Netherlands

来源：

NANO LETTERS | 2001年 / 1卷 / 04期

关键词：

D O I：

10.1021/nl015511d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this contribution we investigated the two-dimensional (2D) supramolecular organization and electronic properties of two bis(urea)-substituted oligothiophene derivatives, containing two or three thiophene units (T2 and T3, respectively), at the solution/graphite interface with scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). Because of the pi-stacking of the oligomers the observed zero conductance band gap in the I(V) curves of a ribbon is found to be considerably smaller than for an isolated oligothiophene molecule, indicating that there exists an effective conjugation in the pi-stacked ribbons on the surface.

引用

收藏

页码：201 / 206

页数：6

相关论文

共 66 条

[31] SURFACE ELECTRONIC-STRUCTURE OF SI(111)-(7 X 7) RESOLVED IN REAL SPACE [J].

HAMERS, RJ ;

TROMP, RM ;

DEMUTH, JE .

PHYSICAL REVIEW LETTERS, 1986, 56 (18) :1972-1975

[32] STM contrast, electron-transfer chemistry, and conduction in molecules [J].

Han, WH ;

Durantini, EN ;

Moore, TA ;

Moore, AL ;

Gust, D ;

Rez, P ;

Leatherman, G ;

Seely, GR ;

Tao, NJ ;

Lindsay, SM .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (50) :10719-10725

[33] CHARGE TRANSPORT IN COPPER PHTHALOCYANINE SINGLE CRYSTALS [J].

HEILMEIER, GH ;

HARRISON, SE .

PHYSICAL REVIEW, 1963, 132 (05) :2010-&

[34] SPECTROSCOPIC AND SPATIAL CHARACTERIZATION OF SUPERCONDUCTING VORTEX CORE STATES WITH A SCANNING TUNNELING MICROSCOPE [J].

HESS, HF ;

ROBINSON, RB ;

DYNES, RC ;

VALLES, JM ;

WASZCZAK, JV .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1990, 8 (01) :450-454

[35] Scanning tunnelling microscopy study on dynamic structural formation in mixed fatty-acid monolayers at liquid/graphite interface [J].

Hibino, M ;

Sumi, A ;

Hatta, I .

THIN SOLID FILMS, 1996, 281 :594-597

[36] GROWTH AND CHARACTERIZATION OF SEXITHIOPHENE SINGLE-CRYSTALS [J].

HOROWITZ, G ;

BACHET, B ;

YASSAR, A ;

LANG, P ;

DEMANZE, F ;

FAVE, JL ;

GARNIER, F .

CHEMISTRY OF MATERIALS, 1995, 7 (07) :1337-1341

[37] Observations of local electron states on the edges of the circular pits on hydrogen-etched graphite surface by scanning tunneling spectroscopy [J].

Klusek, Z ;

Waqar, Z ;

Denisov, EA ;

Kompaniets, TN ;

Makarenko, IV ;

Titkov, AN ;

Bhatti, AS .

APPLIED SURFACE SCIENCE, 2000, 161 (3-4) :508-514

[38] Local density of states from spectroscopic scanning-tunneling-microscope images: Ag(111) [J].

Li, JT ;

Schneider, WD ;

Berndt, R .

PHYSICAL REVIEW B, 1997, 56 (12) :7656-7659

[39] Scanning tunneling spectroscopy of charge effects on semiconductor surfaces and atomic clusters [J].

Maslova, NS ;

Oreshkin, SI ;

Panov, VI ;

Savinov, SV ;

Depuydt, A ;

Van Haesendonck, C .

JETP LETTERS, 1998, 67 (02) :146-152

[40]

Mena-Osteritz E, 2000, ANGEW CHEM INT EDIT, V39, P2680

← 1 2 3 4 5 6 7 →