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Use of nonradiative energy transfer to explore interpolymer and polymer-solute interactions in aqueous solutions of poly(N-isopropylacrylamide)

Schild, Howard G. and Tirrell, David A. (1992) Use of nonradiative energy transfer to explore interpolymer and polymer-solute interactions in aqueous solutions of poly(N-isopropylacrylamide). Macromolecules, 25 (18). pp. 4553-4558. ISSN 0024-9297. doi:10.1021/ma00044a015. https://resolver.caltech.edu/CaltechAUTHORS:SCHIm1992

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Abstract

N-Isopropylacrylamide (NIPAAM) was copolymerized with small quantities of 9-fluorenylmethyl acrylate to yield labeled poly(N-isopropylacrylamide) (PNIPAAM) for use in nonradiative energy transfer (NRET) experiments with various pyrene derivatives in aqueous solution. Microcalorimetry and cloud point measurements of the lower critical solution temperatures (LCST) of these copolymers showed very slight depressions in the LCST as compared to that of the homopolymer. NRET investigations showed no energy transfer from fluorene-labeled PNIPAAM to free pyrene or to PNIPAAM-bound pyrene in mixed aqueous solutions at 24.5 "C in contrast to literature reports of similar work done with (hydroxypropyl)-cellulose. NRET was observed between fluorene-labeled PNIPAAM and amphiphiles with pyrene terminally bound to their hydrocarbon tails. NRET was much more efficient for a quaternary ammonium amphiphile than for a zwitterionic sulfobetaine-based surfactant.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ma00044a015DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ma00044a015PublisherArticle
ORCID:
AuthorORCID
Tirrell, David A.0000-0003-3175-4596
Additional Information:© 1992 American Chemical Society. Received August 5, 1991. This work was supported by a National Science Foundation Predoctoral Fellowship to H.G.S. and by Army Research Grant No. DAAL03-88-K-0038.
Funders:
Funding AgencyGrant Number
NSF Predoctoral FellowshipUNSPECIFIED
Army Research Office (ARO)DAAL03-88-K-0038
Issue or Number:18
DOI:10.1021/ma00044a015
Record Number:CaltechAUTHORS:SCHIm1992
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:SCHIm1992
Official Citation:Use of nonradiative energy transfer to explore interpolymer and polymer-solute interactions in aqueous solutions of poly(N-isopropylacrylamide) Howard G. Schild and David A. Tirrell Macromolecules 1992 25 (18), 4553-4558
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53500
Collection:CaltechAUTHORS
Deposited By: Anne Hormann
Deposited On:26 Jan 2015 21:48
Last Modified:10 Nov 2021 20:02

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