Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp076351i
Title: Light scattering and luminescence studies on self-aggregation behavior of amphiphilic copolymer micelles
Authors: Yao, J.H. 
Mya, K.Y.
Li, X.
Parameswaran, M. 
Xu, Q.-H. 
Loh, K.P. 
Chen, Z.-K.
Issue Date: 24-Jan-2008
Citation: Yao, J.H., Mya, K.Y., Li, X., Parameswaran, M., Xu, Q.-H., Loh, K.P., Chen, Z.-K. (2008-01-24). Light scattering and luminescence studies on self-aggregation behavior of amphiphilic copolymer micelles. Journal of Physical Chemistry B 112 (3) : 749-755. ScholarBank@NUS Repository. https://doi.org/10.1021/jp076351i
Abstract: The self-aggregation behavior of three amphiphilic graft copolymers, oligo(9,9-dihexyl)fluorence-graft-poly-(ethylene oxide) (OHF-g-PEO), with different architectures was studied by dynamic and static light scattering (DLS and SLS) in combination with fluorescence spectroscopy and transmission electron microscopy (TEM). The formation of self-assembled polymeric micelles was confirmed by SLS and TEM. DLS and SLS analyses showed that the architecture of graft copolymers has a dramatic effect on critical aggregation concentration (CAC), micelle size distribution, apparent aggregation number (N agg app), and apparent molecular weight of polymer aggregates (Mw,agg app). An architecture-dependent excimer emission, resulting from the π-π stacking of the oligofluorene backbones, was also observed from the photoluminescence spectra of the micelle aqueous solutions, which indicated a strong intermolecular interaction among the polymeric molecules. The excimer emission was further investigated by time-resolved fluorescence spectroscopy. © 2008 American Chemical Society.
Source Title: Journal of Physical Chemistry B
URI: http://scholarbank.nus.edu.sg/handle/10635/94155
ISSN: 15206106
DOI: 10.1021/jp076351i
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

13
checked on Dec 12, 2018

WEB OF SCIENCETM
Citations

13
checked on Dec 4, 2018

Page view(s)

27
checked on Oct 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.