Collective fluctuation in chiral smectic phases of main-chain liquid crystalline polymers
We have investigated the collective fluctuation in the chiral smectic phases of main-chain polyesters having a mesogenic p,p'-dibenzoate unit via dielectric and dynamic electrooptical measurements. A relaxation due to the Goldstone mode was observed at several tens of Hz in the chiral smectic C (SmC*) phase in both measurements, where another relaxation associated with the soft mode was also confirmed around the SmA-SmC* phase transition temperature. Although the mesogens are linked together in a main-chain liquid crystalline polymer, the observed soft mode is associated with the tilt fluctuation of the average direction of the mesogens.
Document Type: Research Article
Affiliations: 1: Center for Nano Science and Technology, Department of Nanochemistry, Tokyo Polytechnic University, Atsugi-shi 243-0297, Japan 2: Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Tokyo 152-8552, Japan
Publication date: 01 March 2007
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites
Receive new issue alert- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content