Journal article
HIERARCHICAL NANOSTRUCTURES OF MESOGEN JACKETED BENT-CORE LIQUID CRYSTALLINE BLOCK COPOLYMERS
Polymer preprints, Vol.48(2)
01 Aug 2007
Abstract
Liquid crystalline block copolymers (LCBCPs) exhibit hierarchy in structure and functionality at the nanoscale due to the cumulative effect of BCP microphase separation and LC ordering, which occur at length scales that are an order of magnitude different in dimensions. 1-4 Bent-core (BC) LCs are an interesting class of materials that exhibit unique electro-optical (EO) properties. 5,6 By incorporating BCLCs as one of the blocks in a LCBCP system, their unique EO properties can be studied in an environment confined by BCP nanodomains. Nanoconfinement of the LCs in BCP domains leads to improved electrical and optical properties of the LCs. Unique phase structures can be obtained in LCBCPs due to the extreme nature of the combining blocks (rigid and flexible). Attaching the LC mesogens directly along the polymer backbone leads to the formation of mesogenic jacketed LCPs (MJLCPs). Steric interactions between the mesogens force the polymer backbone to adopt an extended chain conformation thus forming rigid macromolecular columns. 7,8 We report the phase behavior of a series of mesogen jacketed bent-core LCBCPs, poly(styrene- b- {5-vinyl-1,3-phenylenebis[4-(4'-tetradecyloxybenzoyloxy)benzoate]}) (PS- b -PVC14). Phase structures are investigated as a function of molecular weight (Mw) and volume fraction of the PVC block.
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Details
- Title
- HIERARCHICAL NANOSTRUCTURES OF MESOGEN JACKETED BENT-CORE LIQUID CRYSTALLINE BLOCK COPOLYMERS
- Creators
- Kishore TennetiXiaofang ChenChristopher LiXinhua WanQi-Feng ZhouLixia RongBenjamin Hsiao
- Publication Details
- Polymer preprints, Vol.48(2)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991019170450004721