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Volumn 65, Issue 50, 2009, Pages 10436-10440

Dynamic switching between binding sites in the complexation of macrocyclic 'push-pull' chromophores to lanthanides

Author keywords

'Push pull' chromophores; Factor analysis; Hill equation; Lanthanides; Macrocycles; Sivvu; Spectrophotometric titration

Indexed keywords

1,3 DIACETYLPYRIDINE; LANTHANIDE; MACROCYCLIC COMPOUND; METAL COMPLEX; PYRIDINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 70350710656     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2009.10.024     Document Type: Article
Times cited : (13)

References (35)
  • 15
    • 70350709667 scopus 로고    scopus 로고
    • note
    • a values determined by fitting an absorbance profile at 500 nm for a 1:1 binding model.
  • 16
    • 70350738024 scopus 로고    scopus 로고
    • note
    • 2C{double bond, long}O portion of the crown ether.
  • 18
    • 0003881316 scopus 로고
    • Wiley, New York, NY In order to rule out the possibility of kinetic delays in complex formation (thus giving apparent sigmoidal behaviour), the absorption measurements have been repeated in some instances after a few hours interval showing no change between the two measurements
    • Connors K.A. Binding Constants: The Measurement of Molecular Complex Stability (1987), Wiley, New York, NY In order to rule out the possibility of kinetic delays in complex formation (thus giving apparent sigmoidal behaviour), the absorption measurements have been repeated in some instances after a few hours interval showing no change between the two measurements
    • (1987) Binding Constants: The Measurement of Molecular Complex Stability
    • Connors, K.A.1
  • 25
    • 70350705499 scopus 로고    scopus 로고
    • Titration experiments were run (Table S1) using different concentrations of the lanthanide triflate and/or inverting the species at fixed concentration, giving in some instances variable results in terms of apparent association constants. Recent examples have demonstrated how ion pairing can have dramatic effects on the measurements of apparent binding stabilities at different concentrations; as demonstrated by the mass spectrometric experiments, in this system the counterions play an active role in the definition of the first coordination sphere of the cation in the presence of the added ligands.
    • Titration experiments were run (Table S1) using different concentrations of the lanthanide triflate and/or inverting the species at fixed concentration, giving in some instances variable results in terms of apparent association constants. Recent examples have demonstrated how ion pairing can have dramatic effects on the measurements of apparent binding stabilities at different concentrations; as demonstrated by the mass spectrometric experiments, in this system the counterions play an active role in the definition of the first coordination sphere of the cation in the presence of the added ligands.
  • 28
    • 70350742877 scopus 로고    scopus 로고
    • Calvin College, Grand Rapids, MI
    • Sivvu, Vander Griend D.A., and DeVries M.J. (2005), Calvin College, Grand Rapids, MI. www.calvin.edu/∼dav4/sivvu
    • (2005)
    • Sivvu1    Vander Griend, D.A.2    DeVries, M.J.3
  • 30
    • 70350742876 scopus 로고    scopus 로고
    • note
    • 10% of the 451 wavelengths and 10% of the 30 solutions.
  • 32
    • 0001216457 scopus 로고    scopus 로고
    • For a review on crown ether complexation of lanthanides and selectivity issues, see See also Ref. 3b
    • For a review on crown ether complexation of lanthanides and selectivity issues, see. Piguet C., and Bünzli J.-C. Chem. Soc. Rev. 28 (1999) 347-358 See also Ref. 3b
    • (1999) Chem. Soc. Rev. , vol.28 , pp. 347-358
    • Piguet, C.1    Bünzli, J.-C.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.