Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 225, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.117523
Keywords
Chemosensor; Fluorescence; Rhodamine; Al3+; AMP
Categories
Funding
- CSIR, New Delhi [02(0216)/14/EMR-II]
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Organic nanoparticles (N1) were prepared by dispersing thiophene-conjugated rhodamine derivative 1 in a buffer solution (10 mM TRIS, pH 7.4, containing 1% DMSO, v/v). N1 selectively recognized Al3+ ions through the OFF-ON switching mechanism of the spirolactam ring in rhodamine. The resulting N1 center dot Al3+ complex recognized the biologically important molecule adenosine monophosphate (AMP) through a cation displacement process with a detection limit of 2 nM. N1 was capable of determining the concentration of Al3+ ions in environmental and biological samples. Portable test strips of N1 were prepared for the recognition of Al3+ ions and AMP for practical uses. Furthermore, it was demonstrated that the N1 center dot Al3+ complex facilitated real-time monitoring of AMP concentration in the hydrolysis of ATP and ADP. (C) 2019 Elsevier B.V. All rights reserved.
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