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Polymorphism of dioctyl-terthiophene within thin films: the role of the first monolayer

Polymorphism of dioctyl-terthiophene within thin films: the role of the first monolayer
Polymorphism of dioctyl-terthiophene within thin films: the role of the first monolayer
The origins of specific polymorphic phases within thin films are still not well understood. The polymorphism of the molecule dioctyl-terthiophene is investigated during the presence of a silicon-oxide surface during the crystallisation process. It is found that a monolayer of molecules forms two-dimensional crystals on the surface. In the case of thicker films crystalline islands are formed, A comparison of the three polymorphic phases observed within thin films and the thermodynamically more stable single crystal phases reveals distinct differences which can be related to an adaption of the molecular packing with the flat surface of the substrate.
molecular crystals, surface induced phases, thin film morphology
0009-2614
1-19
Lercher, Christoph
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Röthel, Christian
527f466b-91b7-4a80-ba81-6b5b672385cc
Roscioni, Otello Maria
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Geerts, Yves Henry
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Shen, Quan
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Teichert, Christian
b0f5ba20-15b9-48fc-b7bf-de63729077f5
Fischer, Roland
d2acd110-d8ec-4c1d-9b90-46d0483dd112
Leising, Günther
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Sferrazza, Michele
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Gbabode, Gabin
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Resel, Roland
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Lercher, Christoph
f45ff031-ec86-4ea6-a453-8bd3b062d552
Röthel, Christian
527f466b-91b7-4a80-ba81-6b5b672385cc
Roscioni, Otello Maria
1e75cd73-a2ed-4e6a-9f8f-25c9ffe1e271
Geerts, Yves Henry
2a76f7e7-703c-4027-abed-5c424671e494
Shen, Quan
9df19c74-cdc4-449b-9b50-1ff9023b097d
Teichert, Christian
b0f5ba20-15b9-48fc-b7bf-de63729077f5
Fischer, Roland
d2acd110-d8ec-4c1d-9b90-46d0483dd112
Leising, Günther
f08d9282-ef2a-46c6-a669-30f75c522593
Sferrazza, Michele
5fccb2a9-655b-4507-b1cf-75ca4bed168e
Gbabode, Gabin
f557ed6a-5634-487b-8910-131566df479e
Resel, Roland
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Lercher, Christoph, Röthel, Christian, Roscioni, Otello Maria, Geerts, Yves Henry, Shen, Quan, Teichert, Christian, Fischer, Roland, Leising, Günther, Sferrazza, Michele, Gbabode, Gabin and Resel, Roland (2015) Polymorphism of dioctyl-terthiophene within thin films: the role of the first monolayer. Chemical Physics Letters, 1-19. (doi:10.1016/j.cplett.2015.04.027).

Record type: Article

Abstract

The origins of specific polymorphic phases within thin films are still not well understood. The polymorphism of the molecule dioctyl-terthiophene is investigated during the presence of a silicon-oxide surface during the crystallisation process. It is found that a monolayer of molecules forms two-dimensional crystals on the surface. In the case of thicker films crystalline islands are formed, A comparison of the three polymorphic phases observed within thin films and the thermodynamically more stable single crystal phases reveals distinct differences which can be related to an adaption of the molecular packing with the flat surface of the substrate.

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Accepted/In Press date: 20 April 2015
e-pub ahead of print date: 24 April 2015
Keywords: molecular crystals, surface induced phases, thin film morphology
Organisations: Chemistry

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Local EPrints ID: 376903
URI: http://eprints.soton.ac.uk/id/eprint/376903
ISSN: 0009-2614
PURE UUID: 259543fe-f6f5-47e8-9f09-82f920b69833

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Date deposited: 13 May 2015 08:56
Last modified: 05 Nov 2019 06:43

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Contributors

Author: Christoph Lercher
Author: Christian Röthel
Author: Otello Maria Roscioni
Author: Yves Henry Geerts
Author: Quan Shen
Author: Christian Teichert
Author: Roland Fischer
Author: Günther Leising
Author: Michele Sferrazza
Author: Gabin Gbabode
Author: Roland Resel

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