Tuning crystal polymorphs of a Π-extended tetrathiafulvalene-based cruciform molecule towards high-performance organic field-effect transistors

Linlin Feng; Huanli Dong; Qingyuan Li; Weigang Zhu; Gege Qiu; Shang Ding; Yang Li; Mikkel Andreas Christensen; Christian Richard Parker; Zhongming Wei; Mogens Brøndsted Nielsen; Wenping Hu

doi:10.1007/s40843-016-5137-4

Tuning crystal polymorphs of a Π-extended tetrathiafulvalene-based cruciform molecule towards high-performance organic field-effect transistors

Linlin Feng, Huanli Dong, Qingyuan Li, Weigang Zhu, Gege Qiu, Shang Ding, Yang Li, Mikkel Andreas Christensen, Christian Richard Parker, Zhongming Wei, Mogens Brøndsted Nielsen, Wenping Hu

Department of Chemistry

6 Citations (Scopus)

Abstract

It is a common phenomenon for organic semiconductors to crystallize in two or more polymorphs, leading to various molecular packings and different charge transport properties. Therefore, it is a crucial issue of tuning molecular crystal polymorphs (i.e., adjusting the same molecule with different packing arrangements in solid state) towards efficient charge transport and high performance devices. Here, the choice of solvent had a marked effect on controlling the growth of α-phase ribbon and β-phase platelet during crystallization for an indenofluorene (IF) π-extended tetrathiafulvalene (TTF)-based cruciform molecule, named as IF-TTF. The charge carrier mobility of the α-phase IF-TTF crystals was more than one order of magnitude higher than that of β-phase crystals, suggesting the importance of reasonably tuning molecular packing in solid state for the improvement of charge transport in organic semiconductors

Original language	English
Journal	Science China Materials
Volume	60
Issue number	1
Pages (from-to)	75-82
Number of pages	8
ISSN	2095-8226
DOIs	https://doi.org/10.1007/s40843-016-5137-4
Publication status	Published - 1 Jan 2017

Keywords

organic semiconductor
crystal polymorphs
tetrathiafulvalene-based cruciform molecule
field-effect transistor
charge carrier mobility

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10.1007/s40843-016-5137-4

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Cite this

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title = "Tuning crystal polymorphs of a Π-extended tetrathiafulvalene-based cruciform molecule towards high-performance organic field-effect transistors",

abstract = "It is a common phenomenon for organic semiconductors to crystallize in two or more polymorphs, leading to various molecular packings and different charge transport properties. Therefore, it is a crucial issue of tuning molecular crystal polymorphs (i.e., adjusting the same molecule with different packing arrangements in solid state) towards efficient charge transport and high performance devices. Here, the choice of solvent had a marked effect on controlling the growth of α-phase ribbon and β-phase platelet during crystallization for an indenofluorene (IF) π-extended tetrathiafulvalene (TTF)-based cruciform molecule, named as IF-TTF. The charge carrier mobility of the α-phase IF-TTF crystals was more than one order of magnitude higher than that of β-phase crystals, suggesting the importance of reasonably tuning molecular packing in solid state for the improvement of charge transport in organic semiconductors",

keywords = "organic semiconductor, crystal polymorphs, tetrathiafulvalene-based cruciform molecule, field-effect transistor, charge carrier mobility",

author = "Linlin Feng and Huanli Dong and Qingyuan Li and Weigang Zhu and Gege Qiu and Shang Ding and Yang Li and Christensen, {Mikkel Andreas} and Parker, {Christian Richard} and Zhongming Wei and Nielsen, {Mogens Br{\o}ndsted} and Wenping Hu",

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T1 - Tuning crystal polymorphs of a Π-extended tetrathiafulvalene-based cruciform molecule towards high-performance organic field-effect transistors

AU - Feng, Linlin

AU - Dong, Huanli

AU - Li, Qingyuan

AU - Zhu, Weigang

AU - Qiu, Gege

AU - Ding, Shang

AU - Li, Yang

AU - Christensen, Mikkel Andreas

AU - Parker, Christian Richard

AU - Wei, Zhongming

AU - Nielsen, Mogens Brøndsted

AU - Hu, Wenping

PY - 2017/1/1

Y1 - 2017/1/1

N2 - It is a common phenomenon for organic semiconductors to crystallize in two or more polymorphs, leading to various molecular packings and different charge transport properties. Therefore, it is a crucial issue of tuning molecular crystal polymorphs (i.e., adjusting the same molecule with different packing arrangements in solid state) towards efficient charge transport and high performance devices. Here, the choice of solvent had a marked effect on controlling the growth of α-phase ribbon and β-phase platelet during crystallization for an indenofluorene (IF) π-extended tetrathiafulvalene (TTF)-based cruciform molecule, named as IF-TTF. The charge carrier mobility of the α-phase IF-TTF crystals was more than one order of magnitude higher than that of β-phase crystals, suggesting the importance of reasonably tuning molecular packing in solid state for the improvement of charge transport in organic semiconductors

AB - It is a common phenomenon for organic semiconductors to crystallize in two or more polymorphs, leading to various molecular packings and different charge transport properties. Therefore, it is a crucial issue of tuning molecular crystal polymorphs (i.e., adjusting the same molecule with different packing arrangements in solid state) towards efficient charge transport and high performance devices. Here, the choice of solvent had a marked effect on controlling the growth of α-phase ribbon and β-phase platelet during crystallization for an indenofluorene (IF) π-extended tetrathiafulvalene (TTF)-based cruciform molecule, named as IF-TTF. The charge carrier mobility of the α-phase IF-TTF crystals was more than one order of magnitude higher than that of β-phase crystals, suggesting the importance of reasonably tuning molecular packing in solid state for the improvement of charge transport in organic semiconductors

KW - organic semiconductor

KW - crystal polymorphs

KW - tetrathiafulvalene-based cruciform molecule

KW - field-effect transistor

KW - charge carrier mobility

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