title: A novel di-triazole based peptide as a highly sensitive and selective fluorescent chemosensor for Zn2+ ions.
abstract: A di-triazole based peptide has been synthesised by copper catalyzed Huisgen cycloaddition. Fluorescence intensity is enhanced selectively in the presence of Zn(2+), which is ascribed to reversal of photoelectron transfer. Compound 7 was found to self-assemble in the presence of Zn(ClO(4))(2) in an exclusive 2:1 ratio, which is supported by (1)H NMR titration and mass spectral data. The fluorescence intensity of 7 shows a subsequent ON-OFF phenomenon upon repetitive and alternate addition of Zn(ClO(4))(2) and HClO(4).
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India. srk@chem.iitb.ac.in
authors.forename: Sambasivarao
authors.initials: S
authors.lastname: Kotha
authors.forename: Deepti
authors.initials: D
authors.lastname: Goyal née Bansal
authors.forename: Subhasree
authors.initials: S
authors.lastname: Banerjee
authors.forename: Anindya
authors.initials: A
authors.lastname: Datta
mesh_terms: D002384:Catalysis; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D003300:Copper / Q000737:chemistry; D057230:Limit of Detection; D010455:Peptides / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014230:Triazoles / Q000737:chemistry*; D015032:Zinc / Q000032:analysis* / Q000737:chemistry
chemical_list: D010455:Peptides; D014230:Triazoles; D003300:Copper; D015032:Zinc