Cation complexing of crown ethers using fluorescence spectroscopy, part II


Erk C., Gocmen A.

TALANTA, cilt.53, sa.1, ss.137-140, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53 Sayı: 1
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0039-9140(00)00374-x
  • Dergi Adı: TALANTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.137-140
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

The complex formations of benzo[12]crown-4, benzo[15]crown-5 and benzo[18]crown-6 with perchlorate salts of Mg2+, Li+ and Na+ were investigated using the steady state fluorescence emission spectroscopy in acetonitrile. The complexation enhanced quenched fluorescence spectra, (CEQFS) exhibited the ion complexation role of the macrocyclic ethers and equilibrium constant, K-e of 1:1 stoichiometry were estimated. The K, were found in the order of Mg+ > Na+ > Li+ for benzo[15]crown-5 whilst Na+ > Mg+ > Li+ order was found with benzo[12]crown-4 at 298 K. (C) 2000 Elsevier Science B.V. All rights reserved.