The importance of water exclusion: An effective design strategy for detection of Al3+ ions with high sensitivity

Joydev Hatai, Mousumi Samanta, V. Siva Rama Krishna, Suman Pal, Subhajit Bandyopadhyay

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Incorporation of hydrophobic units in a chemosensor for detection of ions in aqueous media seems counterintuitive. However, this work demonstrates that a sensor designed by incorporating local hydrophobicity around a multidentate receptor to achieve desolvation of a strongly hydrated Al3+ ion results in efficient binding of the ion, and consequently elicits a strong fluorescence response. The simultaneous detection of Fe3+ in water was suppressed by using the differential behaviour of the sensor in a methanol-water mixture. The sensor shows a remarkable detection limit of 57 nM for Al3+ which is among one of the lowest reported so far.

Original languageEnglish
Pages (from-to)22572-22579
Number of pages8
JournalRSC Advances
Volume3
Issue number44
DOIs
StatePublished - 1 Jan 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)

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