Triazole-based C3-symmetric multivalent dendritic architecture as Cu(II) ion sensor

Indian Journal of Chemical Technology

article

Preeti Yadav¹  Badri Parshad¹  Antara Sharma Krishna¹  Rita Kakkar¹  Sunil K Sharma¹ 

[1] Department of Chemistry, University of Delhi;Department of Chemistry, Kalindi College, University of Delhi;Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School

关键词: Binding constant;    C3-symmetric;    Cu-complex;    Dendritic architecture;    Metal sensor;    Article;   

DOI  :  10.56042/ijct.v30i1.66216

学科分类：化学（综合）

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

C3-symmetric triazole-based multivalent dendritic architecture having uniform aromatic core and branches has been employed to study its metal binding ability towards Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) ions. The dendritic architecture is found to exhibit a high affinity for Cu(II) ions and formed a solid complex with a blue shift in the dd-band of Cu(II) chloride. X-band EPR spectra at low temperature has supported a distorted tetrahedral geometry for the complex. The complex has displayed quasi-reversible redox waves in cyclic voltammetry (CV). DFT calculations have shown that Cu(II) has a high affinity for the dendritic structure, leading to high complexation energies of the order of -25 eV, showing that the complexation reactions are highly exothermic. The binding constant (K) for the Cu(II) complex has been determined using a fluorescence titration method.

【 授权许可】

CC BY-NC-ND