Polarized X-ray scattering reveals non-crystalline orientational ordering in organic films

Journal article
(Original article)

Publication Details

Author(s): Collins BA, Cochran JE, Yan H, Gann E, Hub C, Fink R, Wang C, Schuettfort T, Mcneill CR, Chabinyc ML, Ade H
Journal: Nature Materials
Publisher: Nature Publishing Group
Publication year: 2012
Volume: 11
Journal issue: 6
Pages range: 536-543
ISSN: 1476-1122


Molecular orientation critically influences the mechanical, chemical, optical and electronic properties of organic materials. So far, molecular-scale ordering in soft matter could be characterized with X-ray or electron microscopy techniques only if the sample exhibited sufficient crystallinity. Here, we show that the resonant scattering of polarized soft X-rays (P-SoXS) by molecular orbitals is not limited by crystallinity and that it can be used to probe molecular orientation down to size scales of 10nm. We first apply the technique on highly crystalline small-molecule thin films and subsequently use its high sensitivity to probe the impact of liquid-crystalline ordering on charge mobility in polymeric transistors. P-SoXS also reveals scattering anisotropy in amorphous domains of all-polymer organic solar cells where interfacial interactions pattern orientational alignment in the matrix phase, which probably plays an important role in the photophysics. The energy and q-dependence of the scattering anisotropy allows the identification of the composition and the degree of orientational order in the domains. © 2012 Macmillan Publishers Limited. All rights reserved.

FAU Authors / FAU Editors

Fink, Rainer Prof. Dr.
Professur für Physikalische Chemie
Hub, Christian

External institutions with authors

Monash University
North Carolina State University
University of California
University of California, Berkeley
University of Cambridge

How to cite

Collins, B.A., Cochran, J.E., Yan, H., Gann, E., Hub, C., Fink, R.,... Ade, H. (2012). Polarized X-ray scattering reveals non-crystalline orientational ordering in organic films. Nature Materials, 11(6), 536-543. https://dx.doi.org/10.1038/nmat3310

Collins, B. A., et al. "Polarized X-ray scattering reveals non-crystalline orientational ordering in organic films." Nature Materials 11.6 (2012): 536-543.


Last updated on 2019-09-04 at 21:50