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Spark Discharge Doping-Achieving Unprecedented Control over Aggregate Fraction and Backbone Ordering in Poly(3-hexylthiophene) Solutions

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007277
URN zum Zitieren der Version auf EPub Bayreuth: urn:nbn:de:bvb:703-epub-7277-5

Titelangaben

Eller, Fabian ; Wenzel, Felix ; Hildner, Richard ; Havenith, Remco W. A. ; Herzig, Eva M.:
Spark Discharge Doping-Achieving Unprecedented Control over Aggregate Fraction and Backbone Ordering in Poly(3-hexylthiophene) Solutions.
In: Small. Bd. 19 (2023) Heft 21 . - 2207537.
ISSN 1613-6829
DOI der Verlagsversion: https://doi.org/10.1002/smll.202207537

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Abstract

The properties of semiconducting polymers are strongly influenced by their aggregation behavior, that is, their aggregate fraction and backbone planarity. However, tuning these properties, particularly the backbone planarity, is challenging. This work introduces a novel solution treatment to precisely control the aggregation of semiconducting polymers, namely current-induced doping (CID). It utilizes spark discharges between two electrodes immersed in a polymer solution to create strong electrical currents resulting in temporary doping of the polymer. Rapid doping-induced aggregation occurs upon every treatment step for the semiconducting model-polymer poly(3-hexylthiophene). Therefore, the aggregate fraction in solution can be precisely tuned up to a maximum value determined by the solubility of the doped state. A qualitative model for the dependences of the achievable aggregate fraction on the CID treatment strength and various solution parameters is presented. Moreover, the CID treatment can yield an extraordinarily high quality of backbone order and planarization, expressed in UV–vis absorption spectroscopy and differential scanning calorimetry measurements. Depending on the selected parameters, an arbitrarily lower backbone order can be chosen using the CID treatment, allowing for maximum control of aggregation. This method may become an elegant pathway to finely tune aggregation and solid-state morphology for thin-films of semiconducting polymers.

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Publikationsform: Artikel in einer Zeitschrift
Keywords: conjugated polymers; density functional theory; green solvents; nanostructural control; organic semiconductors; solubility; solution pre-aggregation
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Institutionen der Universität: Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Professur Experimentalphysik VII - Dynamik und Strukturbildung
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Professur Experimentalphysik VII - Dynamik und Strukturbildung > Professur Experimentalphysik VII - Dynamik und Strukturbildung - Univ.-Prof. Dr. Eva M. Herzig
Fakultäten
Fakultäten > Fakultät für Mathematik, Physik und Informatik
Sprache: Englisch
Titel an der UBT entstanden: Ja
URN: urn:nbn:de:bvb:703-epub-7277-5
Eingestellt am: 03 Nov 2023 09:00
Letzte Änderung: 03 Nov 2023 09:00
URI: https://epub.uni-bayreuth.de/id/eprint/7277

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