The effect of heavy metals on the anthracene-Me-beta-cyclodextrin host-guest inclusion complexes


Ay U., Dogruyol Z. , ARSU N.

SUPRAMOLECULAR CHEMISTRY, cilt.26, ss.66-70, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 26 Konu: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1080/10610278.2013.822971
  • Dergi Adı: SUPRAMOLECULAR CHEMISTRY
  • Sayfa Sayısı: ss.66-70

Özet

Anthracene was used to form an inclusion complex with methylated--cyclodextrin (Me-beta-CD) in water. In aqueous Me--CD solution, typical fluorescence emission of anthracene was observed. Benesi-Hildebrand's method was used to obtain the stoichiometry of the anthracene-Me--CD complex. The Stern-Volmer quenching constants, K-sv, and fluorescence quantum yields were calculated according to changes in the fluorescence emission intensity of anthracene-Me-beta-CD inclusion complexes by adding various amounts of Pb2+ and Cd2+ salts in water. The K-sv values and fluorescence quantum yields indicate that Pb2+ salts quench the anthracene-Me-beta-CD inclusion complexes more efficiently than Cd2+ salts.

Anthracene was used to forman inclusion complex withmethylated-b-cyclodextrin (Me-b-CD) inwater. In aqueousMe-b-CD solution,  typical ?uorescence  emission  of  anthracene was observed. Benesi–Hildebrand’s method was used  to  obtain  the stoichiometry of the anthracene–Me-b-CD complex. The Stern–Volmer quenching constants, Ksv, and ?uorescence quantum yields  were  calculated  according  to  changes  in  the  ?uorescence  emission  intensity  of  anthracene–Me-b-CD  inclusion complexes by adding various amounts of Pb2þ 
and Cd2þ salts inwater. The Ksv values and ?uorescence quantumyields indicate 
that Pb2þ salts quench the anthracene–Me-b-CD inclusion complexes more ef?ciently than Cd2þ salts.