fulltext.study @t Gmail

Selective recognition of Cu2+ by di-O-picolyl derivative of 1,1′-methylene-bis(2-naphthol)

Paper ID Volume ID Publish Year Pages File Format Full-Text
28274 44067 2009 6 PDF Available
Title
Selective recognition of Cu2+ by di-O-picolyl derivative of 1,1′-methylene-bis(2-naphthol)
Abstract

Di-derivatives of 1,1′-methylene-bis(2-naphthol) (L1) possessing ester (L2), carboxylic acid (L3) or picolyl (L4) as end groups of the pendants have been synthesized and characterized. Titration of these derivatives for their recognition towards M2+ (where M = Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn) were performed by following the fluorescence emission intensities in methanol solution. The picolyl derivative (L4) has been found to be well suited for Cu2+ recognition (≤630 ppb) via the formation of 1:1 complex that was further proven based on absorption as well as ESI MS studies. On the other hand, L1 and L2 were mainly insensitive towards M2+, where as the carboxylic derivative (L3) shows fluorescence changes with almost all the metal ions and hence none of the L1, L2 and L3 are suited for any M2+ recognition. The studies clearly suggested that the chemical nature of the functional groups and the coordination preferences of the metal ion seem to play important role in the selective recognition of the metal ion.

Keywords
1,1′-Methylene-bis(2-naphthoxy-methyl-2′-pyridine); Cu2+ selective recognition; Fluorescence quench; Job's plot; Stoichiometry by ESI-MS; NMR titration
First Page Preview
Selective recognition of Cu2+ by di-O-picolyl derivative of 1,1′-methylene-bis(2-naphthol)
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 202, Issues 2–3, 25 February 2009, Pages 172–177
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us