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An NMR Study of the Smectic-A <—> Nematic Phase Transition of Alkyl Cyanobiphenyl

 

作者: H. Yoshida,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 1995）
卷期: Volume 259, issue 1  

页码: 55-74

 

ISSN:1058-725X

 

年代: 1995

 

DOI:10.1080/10587259508038673

 

出版商: Taylor & Francis Group

 

关键词: NMR;relaxation times (T1,T2);phase transition;critical exponents;n-alkyl cyanobiphenyl

 

数据来源: Taylor

 

摘要:

The author reports for the first time that a critical feature arising from the fluctuations of the order parameter in the smectic-A <—> nematic (Sm-A <—>N) phase transitions of 4-cyano-4′-n-octylbiphenyl (8CB) and 4-cyano-4′-n-nonanylbiphenyl (9CB) can be clearly observed from nuclear magnetic resonance (NMR)13CT1(spin-lattice) andT2(spin-spin) relaxation times.

 

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