Temperature and Molecular Weight Dependent Hierarchical Equilibrium Structures in Semiconducting Poly(3-hexylthiophene)

被引：210

作者：

Wu, Zhiyong ^{[1
]}

Petzold, Albrecht ^{[1
]}

Henze, Thomas ^{[1
]}

Thurn-Albrecht, Thomas ^{[1
]}

Lohwasser, Ruth H. ^{[2
]}

Sommer, Michael ^{[2
]}

Thelakkat, Mukundan ^{[2
]}

机构：

[1] Univ Halle Wittenberg, Inst Phys, D-06099 Halle, Germany

[2] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

MACROMOLECULES | 2010年 / 43卷 / 10期

关键词：

FIELD-EFFECT MOBILITY; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); MELTING BEHAVIOR; THIN-FILMS; POLYTHIOPHENE; MORPHOLOGY; CRYSTALLIZATION; MECHANISM; POLY(3-ALKYLTHIOPHENES); ORIENTATION;

D O I：

10.1021/ma902566h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report on structural investigations of a series of regioregular poly(3-hexylthiophene) with well-defined molecular weight (5-19 kg/mol) using DSC, small angle and wide-angle X-ray scattering, and A FM. With increasing temperature, we identify three ordered phases, namely 3D crystalline, 2D crystalline with disordered side chains, and a layered phase of smectic symmetry, followed by complete melting. Although all samples crystallize in extended chain conformation, the lower molecular weight material exhibits a lower crystallinity, most likely caused by noncrystallizable end groups. The crystallinity increases strongly with increasing molecular weight, which could be a possible explanation for the known dependence of charge transport properties on molecular weight.

引用

页码：4646 / 4653

页数：8

共 46 条

[11] MOLECULAR CHARACTERIZATION OF POLY(3-HEXYLTHIOPHENE) [J].

HEFFNER, GW ;

PEARSON, DS .

MACROMOLECULES, 1991, 24 (23) :6295-6299

[12] DETERMINATION OF MOLECULAR-WEIGHTS AND MARK-HOUWINK CONSTANTS FOR SOLUBLE ELECTRONICALLY CONDUCTING POLYMERS [J].

HOLDCROFT, S .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1991, 29 (13) :1585-1588

[13] Semicrystalline morphology in thin films of poly(3-hexylthiophene) [J].

Hugger, S ;

Thomann, R ;

Heinzel, T ;

Thurn-Albrecht, T .

COLLOID AND POLYMER SCIENCE, 2004, 282 (08) :932-938

[14]

Jiang XM, 2002, ADV FUNCT MATER, V12, P587, DOI 10.1002/1616-3028(20020916)12:9<587::AID-ADFM587>3.0.CO

[15]

2-T

[16]

JOSHI S, 2002, ADV FUNCT MATER, V12, P587

[17] A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene: fullerene solar cells [J].

Kim, Y ;

Cook, S ;

Tuladhar, SM ;

Choulis, SA ;

Nelson, J ;

Durrant, JR ;

Bradley, DDC ;

Giles, M ;

Mcculloch, I ;

Ha, CS ;

Ree, M .

NATURE MATERIALS, 2006, 5 (03) :197-203

[18] Critical role of side-chain attachment density on the order and device performance of polythiophenes [J].

Kline, R. Joseph ;

DeLongchamp, Dean M. ;

Fischer, Daniel A. ;

Lin, Eric K. ;

Richter, Lee J. ;

Chabinyc, Michael L. ;

Toney, Michael F. ;

Heeney, Martin ;

McCulloch, Iain .

MACROMOLECULES, 2007, 40 (22) :7960-7965

[19] Dependence of regioregular poly(3-hexylthiophene) film morphology and field-effect mobility on molecular weight [J].

Kline, RJ ;

McGehee, MD ;

Kadnikova, EN ;

Liu, JS ;

Fréchet, JMJ ;

Toney, MF .

MACROMOLECULES, 2005, 38 (08) :3312-3319

[20] Highly oriented crystals at the buried interface in polythiophene thin-film transistors [J].

Kline, RJ ;

Mcgehee, MD ;

Toney, MF .

NATURE MATERIALS, 2006, 5 (03) :222-228

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