Fluorescence Studies on Thermo-responsive Behavior and Microenvironment of Poly(N-alkylacrylamide) Gels
| Project/Area Number |
10650867
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
高分子合成
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| Research Institution | Nara Women's University |
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Principal Investigator |
IWAI Kaoru Nara Women's Univ., Fac. of Sci., Associate Prof., 理学部, 助教授 (90127423)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1999: ¥400,000 (Direct Cost: ¥400,000)
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| Keywords | thermo-sensitive polymer gel / fluorescence probe / poly(N-isopropylacrylamide) / copolymer / polymer microenvironment / temperature-induced phase transition / thermo-responsive behavior / volume phase transition / LCST |
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| Research Abstract |
9-(4-N, N-Dimethylaminophenyl)phenanthrene (DMA-Phen ; DP), in which N, N-dimethylaniline (DMA) and phenanthrene (Phen) are linked directly by a single bond, shows an intense and structureless intramolecular charge-transfer (ICT) fluorescence. We have been interested in this compound DP as a new florescence probe because of its strong solvatochromism and have studied polymer microenvironments with using DP as an intramolecular fluorescence probe. In this project temperature-induced volume phase transitions of hydrogels prepared from acrylamide derivatives and their microenvironments have been studied by using the fluorescence probe technique. The results in this study are as follows.
1.DP-labeled poly(N-isopropylacrylamide)(PNIPAM) hydrogels were prepared under various experimental conditions and temperature-induced phase transitions and microenvironments of them were studied by fluorescence probe technique.
2.Some DP-labeled acrylamide polymer gels such as PNIPAM, poly(N, N-diethylacrylamide)(PDEAM), poly(N-isopropylmethacrylamide) (PNIPMAM), and poly(N, N-dimethylacrylamide) (PDMAM), were prepared and their temperature-induced phase transitions and microenvironments were compared with each other.
3.DP-labeled NIPAM copolymer hydrogels with methyl methacrylate, DMAM, N-n-propylacrylamide, and NIPMAM were prepared. Thermo-responsive behaviors and microenvironments of copolymer gels were compared with each other.
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Report
(3 results)
Research Products
(6 results)
