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 National Science
Foundation Award #9206781 |
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Supramolecular Liquid Crystalline Polymers
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| Investigator(s): |
Virgil Percec (PI)
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| Sponsor: |
Case Western Reserve University, OH 44106 2163684510
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| Start Date/Expiration Date |
1992-07-01 to 1998-06-30 (amended 1996-03-01) |
| Awarded Amount to Date: |
$575,000 |
| Abstract: For the past 150 years, organic chemists were concerned with the understanding of the covalent bond. Recently, research on molecular recognition (generated by weak, non-covalent interactions) has been recognized worldwide as an important intellectual and technological frontier. Endo- (generated by convergent cavities) and exo (generated by larger bodies of similar size and shapes, or surfaces) molecular recognition, preorganization and self-organization provide the basis of spontaneous generation of functional supramolecular architectures via self-assembly from their components. It is now accepted that molecular recognition directed synthesis and self-assembly are responsible for the generation and properties of biological systems. This research aims to use molecular recognition both to self-assemble synthetic supramolecular liquid crystalline polymers and to direct their phase behavior. Two novel classes of polymers will be investigated: functional supramolecular polymers which self-assemble by using principles that resemble those of tobacco mosaic virus, and both cyclic main-chain polymers, as well as polymers containing liquid crystalline cyclophane (i.e., cyclic derivatives of main-chain liquid-crystalline oligomers) receptors as structural units. The second class of liquid-crystalline polymers will display molecular recognition directed phase transitions. It is expected that this research will produce molecular devices such as self-assembled supramolecular synthetic ion channels and various other systems which, by analogy with natural biological systems, will combine selective recognition with external regulation. Most important, this research will enable a step ahead in understanding some of the processes that nature uses and about which we know so little, and transplant them to the field of synthetic su pramolecular polymers. |
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| NSF Org: |
DMR - Division of Materials Research |
| Award Number: |
9206781 |
| Award Instrument: |
Continuing grant |
| Program Manager: |
Andrew J. Lovinger
DMR Division of Materials Research
MPS Directorate for Mathematical & Physical Sciences
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| NSF Program(s): |
POLYMERS, SOLID-STATE CHEMSTRY & POLYMRS, SOLID-STATE CHEMSTRY & POLYMRS
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| Field Application(s): |
Chemistry, Materials Research |
| Program Reference Code(s): |
ADVANCED MATERIALS & PROCESSING PROGRAM, AMPP
BIOPROCESSING/BIOMOLECULAR MATERIALS, 9181
POLYMERS, 1773
SINGLE DIVISION/UNIVERSITY, 9161 |
| Program Element Code(s): |
1773
SOLID-STATE CHEMSTRY & POLYMRS, 1720
, 1720
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