摘要:

A preliminary account of the synthesis and liquid crystal properties of representative members of an homologous series of 5-alkanoyl-5″-alkyl-2,2′:5′,2″-terthienyls and the analogous 5,5″-di-alkyl-2,2′: 5′, 2″- terthienyls is given. The disposition of the three thiophene rings renders the molecular geometry sufficiently anisotropic that suitably substituted compounds are mesomorphic, and the liquid crystal transition temperatures of corresponding members of the two series are compared. The related 5,5′-disubstituted 2,2′-bithienyl derivatives are not mesomorphic.

ISSN:1058-725X    

DOI:10.1080/10587259508037316

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Review of “Spectroscopy of Polymers”By JACK L. KOENIG, American Chemical Society Professional Reference Book, 1992, 450 pages; ISBN 0-8412-1904-4 (cloth-bound); ISBN 0-8412-1924-9 (paperback); $89.95 (cloth); $49.95 (paper)

ISSN:1058-725X    

DOI:10.1080/10587259508037317

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:1058-725X    

DOI:10.1080/10587259508037295

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor