Investigation by Fluorescence Technique of the Quenching Effect of Co2+ and Mn2+ Transition Metals, on Naphthalene-Methyl-Beta-Cyclodextrin Host-Guest Inclusion Complex

Ay U., SARLI S. E.

JOURNAL OF FLUORESCENCE, cilt.28, sa.6, ss.1371-1378, 2018 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 6
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s10895-018-2301-9
  • Dergi Adı: JOURNAL OF FLUORESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1371-1378
  • Anahtar Kelimeler: Inclusion complex, Heavy metal ions, Fluorescence, Quenching, Methylated--cyclodextrin, Fluorescence lifetime, HEAVY-METALS
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Inclusion complex of naphthalene with methyl-beta-cyclodextrin in water has been formed. The aqueous solutions of the various amounts of Co(2+)ve Mn(2+)salts have been added to naphthalene-methyl-beta-cyclodextrin (NAP-Me--CD) inclusion complexes. Fluorescence properties of the naphthalene (NAP) compound have been utilized to observe the changes in fluorescence intensities. Stern-Volmer quenching constants and fluorescence quantum yields have been calculated. Characterization of the resulting complex by FT-IR and H-1 NMR technique has been determined. Fluorescence lifetime measurements have been made in the presence and absence of the quenching reagent and Gibbs free energy change has been calculated.