1-(D-Glucopyranosyl-2 '-deoxy-2 '-iminomethyl)-2-hydroxynaphthalene as chemo-sensor for Fe(3+) in aqueous HEPES buffer based on colour changes observable with the naked eye

DSpace/Manakin Repository

1-(D-Glucopyranosyl-2 '-deoxy-2 '-iminomethyl)-2-hydroxynaphthalene as chemo-sensor for Fe(3+) in aqueous HEPES buffer based on colour changes observable with the naked eye

Show full item record

Title: 1-(D-Glucopyranosyl-2 '-deoxy-2 '-iminomethyl)-2-hydroxynaphthalene as chemo-sensor for Fe(3+) in aqueous HEPES buffer based on colour changes observable with the naked eye
Author: MITRA, A; RAMANUJAM, B; RAO, CP
Abstract: A new glucose-based C2-derivatized colorimetric chemo-sensor (L(1)) has been synthesized by a one-step condensation of glucosamine and 2-hydroxy-1-naphthaldehyde for the recognition of transition metal ions. Among the eleven metal ions studied, viz., Mg(2+), Ca(2+), Mn(2+), Fe(2+), Fe(3+), Co(2+), Ni(2+), Cu(2+) Zn(2+), Cd(2+) and Hg(2+), L(1) results in visual colour change only in the presence of Fe(2+), Fe(3+) and Cu(2+) in methanol. However, in an aqueous HEPES buffer (pH 7.2) it is only the Fe(3+) that gives a distinct visual colour change even in the presence of other metal ions, up to a concentration of 280 ppb. The changes have been explained based on the complex formed, and the composition has been determined to be 2:1 between L, and Fe(3+) based on job's plot as well as ESI MS. The structure of the proposed complex has been derived based on HF/6-31G calculations. (C) 2008
URI: http://dx.doi.org/10.1016/j.tetlet.2008.11.116
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10374
http://hdl.handle.net/10054/10374
Date: 2009


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show full item record

Search DSpace


Advanced Search

Browse

My Account