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Original Articles

Cation and Anion Recognition of Crown Ether-armed Metalloporphyrin

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Pages 135-141 | Received 18 Mar 1999, Accepted 07 Jun 1999, Published online: 04 Oct 2006

References

  • Smith , K. M. , ed. 1975 . “Porphyrins and Metalloporphyrins” , Amsterdam-Oxford-New York : Elsevier Sci. .
  • Boulas , P. L. , Kaifer , G-M. and Echegoyen , L. 1998 . Angew. Chem. Int. Ed. Engl. , 37 : 216
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  • A 1:1 complex follows to the equation, CHCG/ (A-AH) = (ϵHG-ϵH)−1 × CG+(ϵHG-ϵH)−1 × K−1 (where CH and CG mean the initial host concentration and the added guest concentration, respectively; A and AH mean the measured absorbance and the initial host absorbance, respectively; ϵHG and ϵH mean the molar absorption coefficients of the complex and of the host, respectively). On the basis of a plot of CG vs CHCG/ (A-AH), the association constant K is estimated from the slope divided by the intercept. Similarly, a 1:2 complex follows to the equation, CHC2 G/(A - AH) = (ϵHG - ϵH)−1 × C2 G + (ϵHG - ϵH)−1 × K−1
  • Young , R. and Chang , C. K. 1985 . J. Am. Chem. Soc. , 107 : 898

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