Naphthalene-tagged copolymer micelles based on polystyrene-alt-maleic anhydride-graft-poly(ethylene oxide)

被引:60
作者
Eckert, AR
Webber, SE
机构
[1] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712
[2] UNIV TEXAS,CTR POLYMER RES,AUSTIN,TX 78712
关键词
D O I
10.1021/ma951053h
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Monoamine-terminated poly(ethylene oxide), PEO-NH2 (MW similar to 5000) has been grafted onto a hydrophobic backbone of polystyrene-alt-maleic anhydride. The backbone has been tagged with a constant fraction of naphthalene and with varying amounts of PEO-NH2. Dialysis from dioxane to 100% water produces micelles that have been characterized by light scattering techniques and TEM. The environment of the polymer backbone as a function of the dioxane/water ratio has been characterized by steady state and time-resolved fluorescence techniques. Backbone collapse seems to occur at similar to 50% water based on the growth of naphthalene excimer fluorescence. Micelle aggregation numbers appear to vary inversely with the grafting density according to the relation N-agg similar to N-PEO(-3), where N-PEO is the number of PEO grafts per chain. This relationship can be rationalized by assuming a constant area per PEO coil on the micelle surface.
引用
收藏
页码:560 / 567
页数:8
相关论文
共 47 条
[21]   FLUORESCENCE STUDIES OF NAPHTHALENE-LABELED DIBLOCK AND TRIBLOCK COPOLYMER MICELLES IN ORGANIC MEDIA [J].
KISEROW, D ;
CHAN, J ;
RAMIREDDY, C ;
MUNK, P ;
WEBBER, SE .
MACROMOLECULES, 1992, 25 (20) :5338-5344
[22]  
Lakowicz J R, 1983, PRINCIPLES FLUORESCE, VThird, P280
[23]  
MOLAU GE, 1971, COLLOIDAL MORPHOLOGI
[24]   PREFERENTIAL EXCIMER EMISSION FROM AMPHIPHILIC ALTERNATING COPOLYMERS OF 2-VINYLNAPHTHALENE AND MALEIC-ACID IN AQUEOUS-SOLUTION [J].
MORISHIMA, Y ;
KOBAYASHI, T ;
NOZAKURA, SI ;
WEBBER, SE .
MACROMOLECULES, 1987, 20 (04) :807-813
[25]   EFFECT OF MONOMER SEQUENCE DISTRIBUTION IN 2-VINYLNAPHTHALENE MALEIC-ACID COPOLYMERS ON ENERGY MIGRATION AND EXCIMER FORMATION IN AQUEOUS-SOLUTION [J].
MORISHIMA, Y ;
LIM, HS ;
NOZAKURA, S ;
STURTEVANT, JL .
MACROMOLECULES, 1989, 22 (03) :1148-1154
[26]   FLUORESCENCE AND ENERGY MIGRATION IN THE RANDOM COPOLYMERS OF (1-NAPHTHYLMETHYL)METHACRYLAMIDE AND SODIUM 2-(ACRYLAMIDO)-2-METHYLPROPANESULFONATE [J].
MORISHIMA, Y ;
TOMINAGA, Y ;
NOMURA, S ;
KAMACHI, M .
MACROMOLECULES, 1992, 25 (02) :861-866
[27]  
MYERS JD, 1988, MACROMOLECULES, V21, P3402
[28]   STUDIES OF THE ANTENNA EFFECT IN POLYMER SYSTEMS .18. PHOTOCHEMICAL-REACTIONS OF STYRENE SOLUBILIZED IN AN AQUEOUS-SOLUTION OF POLY(SODIUM STYRENESULFONATE-CO-2-VINYLNAPHTHALENE) [J].
NOWAKOWSKA, M ;
GUILLET, JE .
MACROMOLECULES, 1991, 24 (02) :474-478
[29]  
OConnor D., 2012, Time-Correlated Single Photon Counting
[30]   FLUORESCENCE STUDIES OF POLYMER COLLOIDS .24. ENERGY-TRANSFER IN RESTRICTED DIMENSIONS - A NEW APPROACH TO LATEX MORPHOLOGY [J].
PEKCAN, O ;
EGAN, LS ;
WINNIK, MA ;
CROUCHER, MD .
MACROMOLECULES, 1990, 23 (08) :2210-2216