FORMATION OF A MISCIBLE SUPRAMOLECULAR POLYMER BLEND THROUGH SELF-ASSEMBLY MEDIATED BY A QUADRUPLY HYDROGEN-BONDED HETEROCOMPLEX
SCIE
SCOPUS
- Title
- FORMATION OF A MISCIBLE SUPRAMOLECULAR POLYMER BLEND THROUGH SELF-ASSEMBLY MEDIATED BY A QUADRUPLY HYDROGEN-BONDED HETEROCOMPLEX
- Authors
- Park, T; Zimmerman, SC
- Date Issued
- 2006-09-06
- Publisher
- AMER CHEMICAL SOC
- Abstract
- A supramolecular network polymer consisting of a pair of immiscible polymers, poly( butyl)methacrylate ( PBMA) and polystyrene ( PS), is described. A urea of guanosine ( 1, UG) and 2,7-diamido1,8-naphthyridine ( 2, DAN), which form an exceptionally strong quadruply hydrogen-bonding complex, are displayed at 1-10 mol % along the main backbone of PBMA and PS, respectively. H-1 NMR studies show heterocomplexation between UG and DAN exclusively. This high-fidelity, high- affinity supramolecular connection of two different polymer coils at the molecular level produces a polymer blend. Blends containing different weight ratios of the polymers and mole percent of the recognition units were characterized by AFM and DSC experiments with no isolated domains observed and a single glass-transition temperature ( T-g). The T-g is tunable by varying the weight ratio of the polymers in the blend. In addition, viscosity measurements, size-exclusion chromatography ( SEC), and dynamic light-scattering ( DLS) studies demonstrate the formation of a supramolecular network structure.
- Keywords
- DYNAMIC LIGHT-SCATTERING; CONTROLLED RADICAL POLYMERIZATION; GLASS-TRANSITION TEMPERATURES; DIBLOCK COPOLYMER BLENDS; SITU FORMED COPOLYMERS; BONDING INTERACTION; THERMOREVERSIBLE GELATION; POLY(ALKYL ACRYLATES); REVERSIBLE POLYMERS; SURFACE-MORPHOLOGY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28943
- DOI
- 10.1021/JA0631854
- ISSN
- 0002-7863
- Article Type
- Article
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 128, no. 35, page. 11582 - 11590, 2006-09-06
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