Abstract
The binding of mixed surfactants of cationic cetyltrimethylammonium bromide (CTAB) and nonionic octaethylene glycol monododecyl ether (C12E8) on anionic polyelectrolyte poly[2-acrylamido-2-methylpropanesulfonic acid (PAMPS)] and fluorophore-labeled copolymers containing about 40 mol% of AMPS was investigated at different mole fractions, Y , of CTAB in the surfactant mixture. The excimer emission of the cationic probe 1-pyrenemethylamine hydrochloride (PyMeA·HCl), nonradiative energy transfer (NRET) between pyrene and naphthalene labels and I 1/ I 3 of the pyrene label were determined by varying the total surfactant concentration, c Surf. The I E/ I M value of PyMeA·HCl firstly increases and then decreases to 0 with c Surf, showing a maximum on every curve. The critical aggregation concentration of the mixed surfactants determined from the I E/ I M maximum decreased from 5×10−5 to 1×10−5 mol/l as Y increased from 0.1 to 0.50, and then leveled off as Y increased up to unity. And at least 5×10−6 mol/l CTAB was required for the mixed surfactants to bind on the PAMPS cooperatively. Equimolar binding of CTAB on AMPS was formed at I E/ I M=0 when Y ≥0.25, while at Y =0.1 some CTAB molecules in the mixed micelle were directed to the water phase without binding with AMPS. Both the intramolecular and the intermolecular NRET increased and then decreased with c Surf, having a maximum on each curve corresponding to the equimolar binding of CTAB and AMPS so long as Y >0, indicating the coiling of the chain and interchain aggregation upon bound surfactants. The I Py/ I Np value at the maximum decreased with decreasing Y because more nonionic surfactant C12E8 participated into the polyelectrolyte-mixed surfactant complexes together with bound CTAB.
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References
Goddard ED (1994) J Am Oil Chem Soc 71:1
Wei Y-C, Hudson SM (1995) J Macromol Sci Rev Macromol Chem Phys C 35:15
Goddard ED, Ananthapadmanabhan KP (1998) In: Kwak JCT (ed) Polymer–surfactant systems. Dekker, New York, p 21
Lindman B, Thalberg K (1993) In: Goddard ED, Ananthapadmanabhan KP (eds) Interactions of surfactants with polymers and proteins. CRC, Boca Raton, FL, p 203
Winnik FM, Regismond STA (1998) In: Kwak JCT (ed) Polymer–surfactant systems. Dekker, New York, p 269
Zana R (1998) In: Kwak JCT (ed) Polymer–surfactant systems. Dekker, New York, p 409
Hayakawa K (1998) In: Kwak JCT (ed) Polymer–surfactant systems. Dekker, New York, p 455
Rodenhiser AP, Kwak JCT (1998) In: Kwak JCT (ed) Polymer–surfactant systems. Dekker, New York, p 1
Dubin PL, Oteri RJ (1983) Colloid interface Sci 95:453
Dubin PL, Davis DD (1984) Macromolecules 17:1294
Dubin PL, Rigsbee DR, McQuigg DW (1985) J Colloid Interface Sci 105:509
Mizusaki M, Morishima Y, Yoshida K, Dubin PL (1997) Langmuir 13:6941
Morishima Y, Mizusaki M, Yoshida K, Dubin PL (1999) Colloids Surf A 147:149
Mizusaki M, Morishima Y, Dubin PL (1998) J Phys Chem B 102:1908
Hashidzume A, Mizusaki M, Yoda K, Morishima Y (1999) Langmuir 15:4276
Mizusaki M, Yusa S, Kawanishi S, Morishima Y (2002) Polymer 43:5865
Chu D-Y, Thomas JK (1986) J Am Chem Soc 108:6270
Chandar P, Somasundaran P, Turro NJ (1988) Macromolecules 21:950
Almgren M, Hansson P, Mukhtar E, Stam JV (1992) Langmuir 8:2405
Hansson P, Almgren M (1994) Langmuir 10:2115
Saito S (1979) Colloid Polym Sci 257:266
Saito S (1993) J Colloid Interface Sci 158:77
Vasilescu M, Anghel DF, Almgren M, Hansson P, Saito S (1997) Langmuir 13:6951
Caruso F, Donath E, Mohwald H, Georgieva R (1998) Macromolecules 31:7365
Caruso F, Lichtenfeld H, Donath E, Mohwald H (1999) Macromolecules 32:2317
Schild HG, Tirrell DA (1992) Macromolecules 25:4553
Itaya T, Ochiai H, Ueda K, Imamura A (1994) Polymer 35:2004
Hayakawa K, Nakano T, Satake I (1996) Langmuir 12:269
Ren B, Tong Z, Gao F, Liu X, Zeng F (2001) Polymer 42:7291
Wang C, Sun Q, Tong Z, Liu X, Zeng F, Wu S (2001) Colloid Polym Sci 279:664
Wang C, Sun Q, Tong Z, Liu X, Zeng F, Gao F (2001) Chem J Chin Univ 22:1265
Wang C, Tong Z, Zeng F, Ren B, Liu X (2003) Prog Colloid Polym Sci 122:1
Wang C, Tong Z, Zeng F, Ren B, Liu X (2002) Colloid Polym Sci 280:814
Morishima Y, Tominaga Y, Kamachi M, Okada T, Hirata Y, Mataga N (1991) J Phys Chem 95:6027
Morishima Y, Tominaga Y, Nomura S, Kamachi M (1992) Macromolecules 25:861
Wang C, Tong Z, Zeng F, Ren B, Liu X (2002) Acta Polym Sinica 6:729
Benrraou M, Zana R, Varoqui R, Pefferkorn E (1992) J Phys Chem 96:1468
Morawets H (1988) Science 240:172
Webber SE (1990) Chem Rev 90:1469
Winnik FM (1990) Polymer 31:2125
Kramer MC, Steger JR, Hu Y, McCormick CL (1996) Macromolecules 29:1992
Yamamoto M, Mizusaki M, Yoda K, Morishima Y (1998) Macromolecules 31:3588
Kalyanasundaram K, Tomas JK (1977) J Am Chem Soc 99:2039
Dong DC, Winnik MA (1984) Can J Chem 62:2560
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Financial support for this work by the National Natural Science Foundation of China (no. 29725411 and 90206010) and the Natural Science Foundation of Guangdong Province (no. 015036) is gratefully acknowledged.
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Wang, C., Tong, Z., Zeng, F. et al. Binding on strong polyelectrolytes of mixed ionic and nonionic surfactants below their critical micelle concentration observed by fluorescence. Colloid Polym Sci 282, 141–148 (2003). https://doi.org/10.1007/s00396-003-0920-3
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DOI: https://doi.org/10.1007/s00396-003-0920-3