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Volumn 44, Issue 34, 2005, Pages 5441-5447

Small-molecule-induced folding of a synthetic polymer

Author keywords

Charge transfer; Crown compounds; Donor acceptor systems; Polymer folding

Indexed keywords

AGENTS; AMMONIUM COMPOUNDS; CHARGE TRANSFER; COMPLEXATION; ETHYLENE; POLYIMIDES;

EID: 24644450678     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200501448     Document Type: Article
Times cited : (87)

References (69)
  • 11
    • 0004024507 scopus 로고    scopus 로고
    • (Ed.: A. Cifferi), Marcel Dekker, New York
    • a) J.-M. Lehn, Supramolecular Polymers (Ed.: A. Cifferi), Marcel Dekker, New York, 2000, p. 615;
    • (2000) Supramolecular Polymers , pp. 615
    • Lehn, J.-M.1
  • 35
    • 4544365847 scopus 로고    scopus 로고
    • for related polymeric systems, see: e) R. S. Hecht, A. Khan, Angew. Chem. 2003, 115, 6203;
    • (2003) Angew. Chem. , vol.115 , pp. 6203
    • Hecht, R.S.1    Khan, A.2
  • 49
    • 2942604427 scopus 로고    scopus 로고
    • [10.11] Therefore, a polyimide that contains 6OE spacers was chosen in the present study. For reviews of the complexation of crown ethers and podands with cations, see: a) G. K. Gokel, W. M. Leevy, M. E. Weber, Chem. Rev. 2004, 104, 2723;
    • (2004) Chem. Rev. , vol.104 , pp. 2723
    • Gokel, G.K.1    Leevy, W.M.2    Weber, M.E.3
  • 60
    • 24644434675 scopus 로고    scopus 로고
    • see the Supporting Information
    • For synthetic details, see the Supporting Information.
  • 62
    • 24644456298 scopus 로고    scopus 로고
    • note
    • All spectral data and gel-permeation chromatograms are available in the Supporting Information.
  • 63
    • 24644445838 scopus 로고    scopus 로고
    • note
    • [11] however, the downfield shift of the donor protons in this case arises from the overwhelming presence of free donor species.
  • 64
    • 24644506509 scopus 로고    scopus 로고
    • note
    • -1, which is comparable to that obtained with NMR spectroscopic analysis. Similar attempts to determine the association constant for the polymer with ITC was difficult as a simple plot that assumed a single association constant failed to give a good fit. A probable reason for this failure is that several different values of association constants could, in principle, be required in the case of the polymer. Nevertheless, it is clear from the values of K obtained for the model AA-6OE that linking the two interacting segments in the folding agent is critical for the generation of a folded structure in the polymer.
  • 65
    • 24644473942 scopus 로고    scopus 로고
    • see the Supporting Information
    • For synthetic details, see the Supporting Information.
  • 66
    • 24644464078 scopus 로고    scopus 로고
    • note
    • + as the folding agent at a ratio of 4:1 molar equivalents with respect to the polymer repeating unit to ensure that the ammonium salt did not precipitate on cooling.
  • 67
    • 24644458038 scopus 로고    scopus 로고
    • see reference [12a]
    • -1; see reference [12a].
  • 69
    • 22244462172 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2005, 44, 5447-5451
    • (2005) Angew. Chem. Int. Ed. , vol.44 , pp. 5447-5451


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.