Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor-in-Chief: Peter Gregory, Deputy Editors: Martin Ottmar, Carolina Novo da Silva, Lorna Stimson
Online ISSN: 1521-4095
Associated Title(s): Advanced Energy Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials Interfaces, Advanced Optical Materials, Particle & Particle Systems Characterization, Small
Cyclodextrins: Highly Polarized Emission from Oriented Films Incorporating Water-Soluble Conjugated Polymers in a Polyvinyl Alcohol Matrix (Adv. Mater. 16/2011)
Water-soluble conjugated polymers reach high degrees of alignment in stretched polyvinyl alcohol matrices, either when encapsulated by threading into cyclodextrins to form a polyrotaxane (polarization ratio, PR∼50), or unencapsulated (PR∼110), report Franco Cacialli and co-workers on p. 1855. This is remarkable because cyclodextrin encapsulation might have been expected to prevent alignment, and is significant because rotaxination affords enhanced properties, such as increased PL efficiency, larger gain bands, suppressed polaron formation, and reduced exciton migration.