Charge Transfer Evidence between Carbon Nanotubes and Encapsulated Conjugated Oligomers

被引：46

作者：

Alvarez, L. ^{[1
,2
]}

Almadori, Y. ^{[1
,2
]}

Arenal, R. ^{[3
,4
]}

Babaa, R. ^{[5
,6
]}

Michel, T. ^{[1
,2
]}

Le Parc, R. ^{[1
,2
]}

Bantignies, J-L. ^{[1
,2
]}

Jousselme, B. ^{[5
]}

Palacin, S. ^{[5
]}

Hermet, P. ^{[1
,2
]}

Sauvajol, J. -L. ^{[1
,2
]}

机构：

[1] Univ Montpellier 2, F-34095 Montpellier, France

[2] CNRS, Lab Charles Coulomb, UMR 5221, F-34095 Montpellier, France

[3] Off Natl Etud & Rech Aerosp, CNRS, Lab Etud Microstruct, F-92322 Chatillon, France

[4] U Zaragoza, LMA, INA, Zaragoza 50018, Spain

[5] CEA, IRAMIS, SPCSI, Lab Chim Surfaces & Interfaces, F-91191 Gif Sur Yvette, France

[6] UTP, Dept Chem Engn, Ipoh, Malaysia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 24期

关键词：

END-CAPPED OLIGOTHIOPHENES; RAMAN-SPECTROSCOPY; FUNCTIONALIZATION; RENORMALIZATION; SPECTRA; SERIES;

D O I：

10.1021/jp1121678

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：

A hybrid system consisting of quaterthiophene derivative inserted into carbon nanotubes is studied. Encapsulation efficiency of the conjugated oligomers in the hollow core of nanotubes is investigated by transmission electron microscopy and spatial-resolved electron energy loss spectroscopy. Infrared spectroscopy showed evidence of a significant positive charge transfer on the inserted oligothiophene. Raman spectra display different behaviors depending on the excitation energy and correlated to the quaterthiophene optical absorption energy. At high excitation wavelength (far from the oligomer resonance), radial breathing modes exhibit a significant upshift consistent with an encapsulation effect. At low excitation wavelength (close to the oligomer resonance), both the G-band shift and the low-frequency modes vanishing suggest a significant charge transfer between the quaterthiophene and the nanotubes.

引用

页码：11898 / 11905

页数：8

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