Convective self-assembly of π-conjugated oligomers and polymers (original) (raw)
* Corresponding authors
a Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurian nr. 42, Cluj-Napoca 400271, Romania
E-mail: ioan.botiz@ubbcluj.ro
b Department of Materials and Centre for Plastic Electronics, Imperial College London, Exhibition Road, London, UK
c Robert Bosch SRL, Robert Bosch nr. 1, Jucu 407352, Romania
d Department of Biomolecular Physics, Faculty of Physics, Babes-Bolyai University, M Kogalniceanu Str. 1, 400084 Cluj-Napoca, Romania
e School of Chemistry & Biochemistry and School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
f School of Materials Science and Engineering and School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
Abstract
Here, we apply convective self-assembly, a technique that was developed to deposit nano-to-micrometer-sized colloids onto solid substrates, to conjugated organic matter. We demonstrate its versatility and effectiveness by fabricating uniform, structured films using both oligomeric and macromolecular species and show through specific examples that the optical properties of the created thin-film structures can be readily manipulated by adjusting parameters such as concentration, substrate temperature and deposition. We tentatively attribute this change in optical properties to a change in the molecular conformation of the deposited molecules. Convective self-assembly should be generally applicable to organic semiconductors and, in principle, can be applied to large-area substrates and roll-to-roll procedures, hence, providing a powerful, additional tool for the processing of conjugated organic materials.
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Article information
DOI
https://doi.org/10.1039/C7TC00063D
Article type
Communication
Submitted
05 Jan 2017
Accepted
18 Feb 2017
First published
20 Feb 2017
Download Citation
J. Mater. Chem. C, 2017,5, 2513-2518
Permissions
Convective self-assembly of π-conjugated oligomers and polymers
I. Botiz, M. Codescu, C. Farcau, C. Leordean, S. Astilean, C. Silva and N. Stingelin,J. Mater. Chem. C, 2017, 5, 2513DOI: 10.1039/C7TC00063D
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