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Volumn 30, Issue 12, 1997, Pages 3494-3506

"Link-functionalized" polymers: An unusual macromolecular architecture through bifunctional initiation

Author keywords

[No Author keywords available]

Indexed keywords

ACRYLIC MONOMERS; COMPLEXATION; ETHERS; MACROMOLECULES; ORGANOMETALLICS; POLYMETHYL METHACRYLATES; SAMARIUM COMPOUNDS;

EID: 0031162648     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma961805n     Document Type: Article
Times cited : (71)

References (114)
  • 4
    • 85033178577 scopus 로고    scopus 로고
    • Submitted for publication
    • Boffa, L. S.; Novak, B. M. Submitted for publication.
    • Boffa, L.S.1    Novak, B.M.2
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    • (1956) Nature , vol.178 , pp. 1168-1169
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    • and references therein
    • Evans, W. J. J. Alloys Compd. 1993, 192, 205-210 and references therein.
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    • Evans, W.J.1
  • 57
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    • 3, vs PMMA)
    • 3, vs PMMA).
  • 71
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    • note
    • 2SmMe(THF) and analyzed by the GPC universal calibration method in chloroform are too high, corresponding to initiator efficiencies near only 65%. Because CL reacts cleanly with the samarium complex in stoichiometric ratios, he ascribes this to the presence of residual water rather than to inefficient initiation per se. See ref 37.
  • 73
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    • 1-benzyl) complex, which resulted in the formation of diallyl alcohols and benzyl ketones. respectively, in moderate yield. The byproducts of these syntheses were not identified. See: (a) Gao. X.; Zeng, J.; Zhou, J. Y. Acta Chim. Sin 1993, 51, 1191-1194; Chem. Abstr. 1994, 120, 297624. (b) Reference 51.
    • (1993) Acta Chim. Sin , vol.51 , pp. 1191-1194
    • Gao, X.1    Zeng, J.2    Zhou, J.Y.3
  • 74
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    • 1-benzyl) complex, which resulted in the formation of diallyl alcohols and benzyl ketones. respectively, in moderate yield. The byproducts of these syntheses were not identified. See: (a) Gao. X.; Zeng, J.; Zhou, J. Y. Acta Chim. Sin 1993, 51, 1191-1194; Chem. Abstr. 1994, 120, 297624. (b) Reference 51.
    • (1994) Chem. Abstr. , vol.120 , pp. 297624
  • 75
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    • Reference 51
    • 1-benzyl) complex, which resulted in the formation of diallyl alcohols and benzyl ketones. respectively, in moderate yield. The byproducts of these syntheses were not identified. See: (a) Gao. X.; Zeng, J.; Zhou, J. Y. Acta Chim. Sin 1993, 51, 1191-1194; Chem. Abstr. 1994, 120, 297624. (b) Reference 51.
  • 76
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    • and references therein
    • Slow initiation or actual induction periods are frequently observed with AK(OR)3 initiators as well but are usually attributed to deaggregation of catalytic species prior to initiation. This procees cannot be advanced as an explanation for monomeric 4, however. See: (a) Dubois, P.; Ropeon, N.; Jérome, R. Teyssié, P. Macromolecules 1996, 29, 1965-1975 and references therein, (b) Duda, A.; Penczek, S. Macromolecules 1995, 28, 5981-5992 and references therein.
    • (1996) Macromolecules , vol.29 , pp. 1965-1975
    • Dubois, P.1    Ropeon, N.2    Jérome, R.3    Teyssié, P.4
  • 77
    • 3342878106 scopus 로고
    • and references therein
    • Slow initiation or actual induction periods are frequently observed with AK(OR)3 initiators as well but are usually attributed to deaggregation of catalytic species prior to initiation. This procees cannot be advanced as an explanation for monomeric 4, however. See: (a) Dubois, P.; Ropeon, N.; Jérome, R. Teyssié, P. Macromolecules 1996, 29, 1965-1975 and references therein, (b) Duda, A.; Penczek, S. Macromolecules 1995, 28, 5981-5992 and references therein.
    • (1995) Macromolecules , vol.28 , pp. 5981-5992
    • Duda, A.1    Penczek, S.2
  • 78
    • 85033159437 scopus 로고    scopus 로고
    • The wideneess of this range most likely represents concentration effects and/or thermostating inefficiencies
    • The wideneess of this range most likely represents concentration effects and/or thermostating inefficiencies.
  • 79
    • 85033162417 scopus 로고    scopus 로고
    • This transition it easily observed for 4, which is reddish in solution. However, complex 6 appears light yellow when dissolved in toluene, and the transition to an alkoxide species is not obvious
    • This transition it easily observed for 4, which is reddish in solution. However, complex 6 appears light yellow when dissolved in toluene, and the transition to an alkoxide species is not obvious.
  • 83
    • 0000516840 scopus 로고
    • Sm(II) species are typically purple, blue, or green, while Sm(III) species are usually yellow or orange. See: Evans, W. J. Polyhdron 1987, 6, 803-835.
    • (1987) Polyhdron , vol.6 , pp. 803-835
    • Evans, W.J.1
  • 84
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    • Reference 41
    • Reference 41.
  • 85
    • 85033187568 scopus 로고    scopus 로고
    • note
    • 2 YOMe is only stable for 2 h at O °C and gradually undergoes ring-opening at room temperature and that for the same reason isolation of the analogous β-propiolactione complex was not possible. We have found 4 to be extremely air-sensitive, to the point that drybox manipulations are preferred over Schlenk techniques for its clean isolation in crystalline form; unfortunately, the conditians of extreme low temperasture needed to prepare and study the intermediate were not available with a drybox freezer. See ref 37.
  • 87
    • 85033179905 scopus 로고    scopus 로고
    • Reference 73a and references therein
    • Reference 73a and references therein.
  • 91
    • 85033183894 scopus 로고    scopus 로고
    • n (GPC, corrected THF vs polystyrene) = 28 430. Both polymerizations gave yields of 67%
    • n (GPC, corrected THF vs polystyrene) = 28 430. Both polymerizations gave yields of 67%.
  • 92
    • 85033183867 scopus 로고    scopus 로고
    • Primary amines are known to protonate samarium allyls. See ref 47
    • Primary amines are known to protonate samarium allyls. See ref 47.
  • 99
    • 85033165043 scopus 로고    scopus 로고
    • note
    • 0 of initiation), and the majority of the induction period thus passed unobserved before the recording of the first point.
  • 101
    • 85033183092 scopus 로고    scopus 로고
    • note
    • a, and calculated
  • 104
    • 85033173049 scopus 로고    scopus 로고
    • GPC (THF, vs polystyrene)
    • GPC (THF, vs polystyrene).
  • 105
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    • Reference 78
    • Reference 78.
  • 110
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    • The literature step of rinsing the product with hexanes was not necessary. Crystallization at -35 °C was carried out directly from the warm (70 °C) reaction mixture. See ref 53
    • The literature step of rinsing the product with hexanes was not necessary. Crystallization at -35 °C was carried out directly from the warm (70 °C) reaction mixture. See ref 53.
  • 112
    • 85033159767 scopus 로고    scopus 로고
    • Authentic sample as reported in JEOL High Resolution NMR Spectro; Sadtler Research Laboratories: Philadelphia, 1967
    • Authentic sample as reported in JEOL High Resolution NMR Spectro; Sadtler Research Laboratories: Philadelphia, 1967.
  • 114
    • 85033187832 scopus 로고
    • Pouchert, C. J., Ed.; Aldrich Chemical Co: Milwaukee
    • Authentic sample as reported in The Aldrich Library of FTIR Spectra, 1st ed.; Pouchert, C. J., Ed.; Aldrich Chemical Co: Milwaukee, 1985; VoL 2.
    • (1985) The Aldrich Library of FTIR Spectra, 1st Ed. , vol.2


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