Polymorphism and Phonon Dynamics of α-Quaterthiophene

被引：20

作者：

Ranzieri, Paolo ^{[1
,2
]}

Girlando, Alberto ^{[1
,2
]}

Tavazzi, Silvia ^{[3
]}

Campione, Marcello ^{[3
]}

Raimondo, Luisa ^{[3
]}

Bilotti, Ivano ^{[4
,5
]}

Brillante, Aldo ^{[4
,5
]}

Della Valle, Raffaele G. ^{[4
,5
]}

Venuti, Elisabetta ^{[4
,5
]}

机构：

[1] Univ Parma, Dip Chim GIAF, I-43100 Parma, Italy

[2] Univ Parma, INSTM UdR Parma, I-43100 Parma, Italy

[3] Univ Milano Bicocca, Dip Sci Mat, I-20125 Milan, Italy

[4] Univ Bologna, Dip Chim Fis & Inorgan, I-40136 Bologna, Italy

[5] Univ Bologna, INSTM UdR Bologna, I-40136 Bologna, Italy

来源：

CHEMPHYSCHEM | 2009年 / 10卷 / 04期

关键词：

molecular dynamics; polymorphism; Raman spectroscopy; statistical thermodynamics; thiophenes; ORGANIC SEMICONDUCTORS; RAMAN MICROSCOPY; OLIGOTHIOPHENES; PENTACENE; POLYTHIOPHENE; SEXITHIOPHENE; GROWTH; SERIES;

D O I：

10.1002/cphc.200800771

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：

Low-frequency (10-150 cm(-1)) Raman spectra of the low-temperature (LT) and high-temperature (HT) polymorphs of the organic semiconductor alpha-quaterthiophene at 300 and 10 K are reported. Polarized spectra, assisted by quasi-harmonic lattice dynamics (QHLD) calculations, allow characterization of the lattice phonon dynamics and identification of the two phases spectroscopically. The experimental data can be explained by taking into account the coupling between intermolecular (lattice) and low-frequency intramolecular modes. Finally, Roman mapping is used to investigate. the phase purity.

引用

页码：657 / 663

页数：7

共 32 条

[1]

Antolini L, 1998, ADV MATER, V10, P382, DOI 10.1002/(SICI)1521-4095(199803)10:5<382::AID-ADMA382>3.0.CO

[2]

2-Y

[3] THE LOWEST ENERGY SINGLET-STATE OF TETRATHIOPHENE, AN OLIGOMER OF POLYTHIOPHENE [J].

BIRNBAUM, D ;

FICHOU, D ;

KOHLER, BE .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (01) :165-169

[4] Characterization of phase purity in organic semiconductors by lattice-phonon confocal Raman mapping: Application to pentacene [J].

Brillante, A ;

Bilotti, I ;

Della Valle, RG ;

Venuti, E ;

Masino, M ;

Girlando, A .

ADVANCED MATERIALS, 2005, 17 (21) :2549-+

[5] Raman phonon spectra of pentacene polymorphs [J].

Brillante, A ;

Della Valle, RG ;

Farina, L ;

Girlando, A ;

Masino, M ;

Venuti, E .

CHEMICAL PHYSICS LETTERS, 2002, 357 (1-2) :32-36

[6] Probing polymorphs of organic semiconductors by lattice phonon Raman microscopy [J].

Brillante, Aldo ;

Bilotti, Ivano ;

Della Valle, Raffaele Guido ;

Venuti, Elisabetta ;

Girlando, Alberto .

CRYSTENGCOMM, 2008, 10 (08) :937-946

[7] Polymorphs of α-sexithiophene probed by lattice phonon Raman microscopy [J].

Brillante, Aldo ;

Bilotti, Ivano ;

Biscarini, Fabio ;

Della Valle, Raffaele Guido ;

Venuti, Elisabetta .

CHEMICAL PHYSICS, 2006, 328 (1-3) :125-131

[8] Growth and characterisation of centimetre-sized single crystals of molecular organic materials [J].

Campione, M ;

Ruggerone, R ;

Tavazzi, S ;

Moret, M .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (25) :2437-2443

[9] Crystal-to-crystal phase transition in α-quaterthiophene:: An optical and structural study [J].

Campione, M. ;

Tavazzi, S. ;

Moret, M. ;

Porzio, W. .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (08)

[10] A 2ND GENERATION FORCE-FIELD FOR THE SIMULATION OF PROTEINS, NUCLEIC-ACIDS, AND ORGANIC-MOLECULES [J].

CORNELL, WD ;

CIEPLAK, P ;

BAYLY, CI ;

GOULD, IR ;

MERZ, KM ;

FERGUSON, DM ;

SPELLMEYER, DC ;

FOX, T ;

CALDWELL, JW ;

KOLLMAN, PA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (19) :5179-5197

← 1 2 3 4 →