Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)

Abstract The structural and photoluminescence (PL) properties of thin films of poly(3-hexylthophene) (P3HT) with molecular weights (MWs) of 3000 and 13,300 have been investigated. Although high MW P3HT always self-organizes into one packing structure (form I), low MW P3HT forms two different packing...

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Main Authors:	Takashi Kobayashi, Keita Kinoshita, Akitsugu Niwa, Takashi Nagase, Hiroyoshi Naito
Format:	Article
Language:	English
Published:	Springer 2017-05-01
Series:	Nanoscale Research Letters
Subjects:	P3HT Molecular weight Polymorph Photoluminescence Intermolecular interactions
Online Access:	http://link.springer.com/article/10.1186/s11671-017-2134-5

id	doaj-art-1c2d27aa752e42c78ff2f5ef672fffc2
recordtype	oai_dc
spelling	doaj-art-1c2d27aa752e42c78ff2f5ef672fffc22018-08-15T23:17:21ZengSpringerNanoscale Research Letters1931-75731556-276X2017-05-011211710.1186/s11671-017-2134-5Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)Takashi Kobayashi0Keita Kinoshita1Akitsugu Niwa2Takashi Nagase3Hiroyoshi Naito4Department of Physics and Electronics, Osaka Prefecture UniversityDepartment of Physics and Electronics, Osaka Prefecture UniversityDepartment of Physics and Electronics, Osaka Prefecture UniversityDepartment of Physics and Electronics, Osaka Prefecture UniversityDepartment of Physics and Electronics, Osaka Prefecture UniversityAbstract The structural and photoluminescence (PL) properties of thin films of poly(3-hexylthophene) (P3HT) with molecular weights (MWs) of 3000 and 13,300 have been investigated. Although high MW P3HT always self-organizes into one packing structure (form I), low MW P3HT forms two different packing structures (forms I and II) depending on the fabrication conditions. In this work, several fabrication techniques have been examined to obtain form II samples with little inclusion of a form I component. It is found that drop-cast thin films of low MW P3HT (form II) exhibit a PL spectrum that is different from that of form I and does not contain the form I component. The PL spectrum can thus be attributed to form II. The differences in PL properties between forms I and II can be understood in terms of weakened interchain interactions due to the longer interchain distance in form II.http://link.springer.com/article/10.1186/s11671-017-2134-5P3HTMolecular weightPolymorphPhotoluminescenceIntermolecular interactions
institution	Open Data Bank
collection	Open Access Journals
building	Directory of Open Access Journals
language	English
format	Article
author	Takashi Kobayashi Keita Kinoshita Akitsugu Niwa Takashi Nagase Hiroyoshi Naito
spellingShingle	Takashi Kobayashi Keita Kinoshita Akitsugu Niwa Takashi Nagase Hiroyoshi Naito Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene) Nanoscale Research Letters P3HT Molecular weight Polymorph Photoluminescence Intermolecular interactions
author_facet	Takashi Kobayashi Keita Kinoshita Akitsugu Niwa Takashi Nagase Hiroyoshi Naito
author_sort	Takashi Kobayashi
title	Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)
title_short	Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)
title_full	Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)
title_fullStr	Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)
title_full_unstemmed	Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)
title_sort	photoluminescence properties of polymorphic modifications of low molecular weight poly(3-hexylthiophene)
publisher	Springer
series	Nanoscale Research Letters
issn	1931-7573 1556-276X
publishDate	2017-05-01
description	Abstract The structural and photoluminescence (PL) properties of thin films of poly(3-hexylthophene) (P3HT) with molecular weights (MWs) of 3000 and 13,300 have been investigated. Although high MW P3HT always self-organizes into one packing structure (form I), low MW P3HT forms two different packing structures (forms I and II) depending on the fabrication conditions. In this work, several fabrication techniques have been examined to obtain form II samples with little inclusion of a form I component. It is found that drop-cast thin films of low MW P3HT (form II) exhibit a PL spectrum that is different from that of form I and does not contain the form I component. The PL spectrum can thus be attributed to form II. The differences in PL properties between forms I and II can be understood in terms of weakened interchain interactions due to the longer interchain distance in form II.
topic	P3HT Molecular weight Polymorph Photoluminescence Intermolecular interactions
url	http://link.springer.com/article/10.1186/s11671-017-2134-5
_version_	1612701258247831552

Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene)

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