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Molecular Machines and Motors: Recent Advances and Perspectives
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SYSNO ASEP 0438190 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Arrays of Dipolar Molecular Rotors in Tris(o-phenylenedioxy)cyclotriphosphazene Author(s) Zhao, K. (US)
Dron, P. I. (US)
Kaleta, Jiří (UOCHB-X) RID, ORCID
Rogers, C. T. (US)
Michl, Josef (UOCHB-X) RID, ORCIDNumber of authors 5 Source Title Molecular Machines and Motors: Recent Advances and Perspectives, 354. - Cham : Springer, 2014 / Credi A. ; Silvi S. ; Venturi M. - ISSN 0340-1022 - ISBN 978-3-319-08677-4 Pages s. 163-211 Number of pages 49 s. Number of pages 342 Publication form Print - P Language eng - English Country DE - Germany Keywords dielectric spectroscopy ; hexagonal TPP ; inclusion compounds ; molecular rotors ; powder X-ray diffraction ; solid-state NMR Subject RIV CF - Physical ; Theoretical Chemistry Institutional support UOCHB-X - RVO:61388963 UT WOS 000356816100007 EID SCOPUS 84921764040 DOI https://doi.org/10.1007/128_2013_513 Annotation Regular two-dimensional or three-dimensional arrays of mutually interacting dipolar molecular rotors represent a worthy synthetic objective. Their dielectric properties, including possible collective behavior, will be a sensitive function of the location of the rotors, the orientation of their axes, and the size of their dipoles. Host-guest chemistry is one possible approach to gaining fine control over these factors. We describe the progress that has been achieved in recent years using tris(o-phenylenedioxy)cyclotriphosphazene as a host and a series of rod-shaped dipolar molecular rotors as guests. Structures of both surface and bulk inclusion compounds have been established primarily by solid-state nuclear magnetic resonance (NMR) and powder X-ray diffraction (XRD) techniques. Low-temperature dielectric spectroscopy revealed rotational barriers as low as 1.5 kcal/mol, but no definitive evidence for collective behavior has been obtained so far. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2015
Number of the records: 1