Sulfonic acids as water-soluble initiators for cationic polymerization in aqueous media with Yb(OTf)3

Journal of Polymer Science, Part A: Polymer Chemistry

Volumn 38, Issue 15, 2000, Pages 2728-2733

  Satoh, Kotaro ^a   Kamigaito, Masami ^a   Sawamoto, Mitsuo ^a  

^a KYOTO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

CATIONIC POLYMERIZATION; CHEMICAL ACTIVATION; INITIATORS (CHEMICAL); MOLECULAR WEIGHT; PHASE COMPOSITION; YTTERBIUM COMPOUNDS;

LEWIS ACID; SULFONIC ACID; YTTERBIUM TRIFLATE;

INORGANIC ACIDS;

EID: 0034249264     PISSN: 0887624X     EISSN: None     Source Type: Journal    
DOI: 10.1002/1099-0518(20000801)38:15<2728::AID-POLA120>3.0.CO;2-R     Document Type: Article

References (21)

1. For example, see Green Chemistry; Anastas, P. T.; Williamson, T. C., Eds.; ACS Symposium Series 626; American Chemical Society: Washington, DC, 1996.
2. For example, see Aqueous-Phase Organometallic Catalysis; Cornils, B.; Herrmann, W. A., Eds.; Wiley-VCH: Weinheim, 1998.
3. For reviews, see (a) Kobayashi, S. Synlett 1994, 689;
4. (b) Engberts, J. B. F. N.; Feringa, B. L.; Keller, E.; Otto, S. Reel Trav Chim Pays-Bas 1996, 115, 457;
5. (c) Kobayashi, S. In Aqueous-Phase Organometallic Catalysis; Cornils, B.; Herrmann, W. A., Eds.; Wiley-VCH: Weinheim, 1998; p 519;
6. (d) Xie, W.; Jin, Y.; Wang, P. G. CHEMTECH 1999, 29(2), 23.
7. Satoh, K.; Kamigaito, M.; Sawamoto, M. Macromolecules 1999, 32, 3827.
8. Satoh, K.; Kamigaito, M.; Sawamoto, M. Macromolecules, in press.
9. Satoh, K.; Kamigaito, M.; Sawamoto, M. Macromolecules, in press.
10. For recent reviews on living cationic polymerization, see (a) Sawamoto, M. Prog Polym Sci 1991, 16, 111;
11. (b) Kennedy, J. P.; Ivan, B. Designed Polymers by Carbocationic Macromolecular Engineering: Theory and Practice; Hanser: Munich, 1992;
12. Cationic Polymerizations; Matyjaszewski, K., Ed.; Marcel Dekker: New York, 1996.
13. (a) Ishihama, Y.; Sawamoto, M.; Higashimura, T. Polym Bull 1990, 23, 361;
14. (b) Ishihama, Y.; Sawamoto, M.; Higashimura, T. Polym Bull 1990, 24, 201.
15. Bordwell, F. G. Acc Chem Res 1988, 21, 456.
16. For example, see (a) Odian, G. Principles of Polymerization; Wiley Interscience: New York, 1991; p 335;
17. (b) Acerdts, A. M.; Herk, A. M.; Klumperman, B.; Kurja, J.; German, A. L. In Synthesis of Polymers; Schlüter, A.-D., Ed.; Wiley-VCH: Weinheim, 1999; p 269.
18. 3 (0.79 g) and 4 (20 mg; see the text). The total volume of the reaction mixture was thus 1.6 mL (aqueous/organic phase = 1/1). The reaction was run under vigorous stirring and was terminated with excess water and toluene. The monomer conversion was determined from the concentration of residual monomer measured by gas chromatography with bromobenzene as an internal standard. The polymer was extracted with toluene, washed with water to remove initiator residues, evaporated to dryness under reduced pressure, and vacuum-dried.
19. n < 1.1) as well as styrene monomer.
20. 3 at 25 °C on a JEOL JNM-LA 500 spectrometer operating at 500.16 MHz. Samples were fractionated by preparative size exclusion chromatography (Shodex K-2002 column) to remove lower molecular weight residues (but not oligomeric pMOS).
21. MALDI-TOF-MS spectra were measured on a PerSeptive Biosystems Voyager-DE STR spectrometer with dithranol (1,8,9-anthracenetriol) as an ionizing matrix and sodium trifluoroacetate as a cationizing agent.