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On the nanoscopic structural heterogeneity of liquid n-alkyl carboxylic acids

Mariani, Alessandro 1; Innocenti, Alessandro 1; Varzi, Alberto 1; Passerini, Stefano 1
1 Karlsruher Institut für Technologie (KIT)


Herein we report the first in-depth structural characterisation of simple linear carboxylic acids with alkyl tail length ranging from one to six carbon atoms. By means of the SWAXS technique, a pronounced nanoscopic heterogeneity evolving along the aliphatic portion of the molecule is highlighted. Via classical molecular dynamics, the origin of such heterogeneity is unambiguously assigned to the existence of aliphatic domains resulting from the self-segregation of the polar and apolar portions of the molecules. Furthermore, the structural correlation of aliphatic-separated polar domains is responsible for observing the so-called “pre-peak” in the SAXS region.

Verlagsausgabe §
DOI: 10.5445/IR/1000138075
Veröffentlicht am 28.09.2021
DOI: 10.1039/d1cp02846d
Zitationen: 3
Web of Science
Zitationen: 3
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1463-9076, 1463-9084
KITopen-ID: 1000138075
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Physical chemistry, chemical physics
Verlag Royal Society of Chemistry (RSC)
Band 23
Heft 36
Seiten 20282–20287
Vorab online veröffentlicht am 20.08.2021
Nachgewiesen in Scopus
Web of Science
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