Rapid detection and estimation of Lead (Pb2+) has been accomplished in randomly selected lipstick samples by a simple FRET-based chemosensor RNPC (Rhodamine-Naphthalimide Conjugate) through “turn on” fluorescence. Fluorescence intensities were compared with the fluorescence plot of RNPC-Pb2+ complex to evaluate the concentration of Pb2+ present in the sample solutions. NMR titrations and TD-DFT calculations were achieved in order to demonstrate the sensing mechanism and the electronic properties of the RNPC-Pb2+ complex. Different cell lines have been cultured for live cell imaging study to understand the in vitro sensing mechanism and to satisfy the biocompatibility of the probe RNPC. © 2018 Elsevier B.V.

A GHOSH

S DAS

S KUNDU

P K MAITI

P SAHOO

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

&nbsp;

The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

&nbsp;

It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Sensors and Actuators, B: Chemical

A new chemosensing ensemble of an azo-based rhodamine derivative (probe 1) with Hg2+ for a selective and quantitative detection of 2,3-bisphosphoglycerate (2,3-BPG), which shows a simple dual signal (color and “off-on-off” fluorescent change) in water, was developed. To the best of our knowledge, this is the first known substituted rhodamine conjugate which has been demonstrated to recognize 2,3-BPG in live cells within the detection limit of nanomolar range. A 1H NMR titration has been carried out to determine the nature of the interaction between the probe 1-Hg2+ complex and 2,3-BPG. The amount of 2,3-BPG in blood cells, that changes during anemia, hypoxia or chronic lungs disease, could be easily measured using the fluorescence property of the probe 1-Hg2+ complex. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Asian Journal of Organic Chemistry

Selective Recognition and Quantification of 2,3-Bisphosphoglycerate in Human Blood Samples by a Rhodamine Derivative

Naphthyridine-based fluorescent probe H1 was synthesized and characterized for the quantification and selective detection of Uric Acid (UA) in live cell. In presence of UA, H1 forms the specific host-guest complex mainly through intermolecular hydrogen bonding and aromatic stacking which produces “turn-off” fluorescence. The probe and UA is found to be 1:1 stoichiometry on the basis of absorption and fluorescence titrations. The probe H1 has been shown to detect UA up to 0.6 µM at pH 7.4. DFT-TDDFT calculations were performed in order to demonstrate the sensing mechanism and the electronic properties of the receptor-donor complex. The selectivity was evaluated in Vero cells in the presence of UA with other purine derivatives, structurally similar to UA. It was found to exhibit no cytotoxicity effect in tested concentration of H1 and good membrane permeability for the detection of UA in living cell system. The unknown concentration of UA in serum and urine can be measured easily using the fluorescence property of probe H1. © 2017 Elsevier Inc.

Bioorganic Chemistry

Selective fluorescence sensing and quantification of uric acid by naphthyridine-based receptor in biological sample

Indian Journal of Science and Technology

Composites of Graphene Oxide and Zeolite as a Potential Inhibitor for Alkaline Corrosion of Aluminium

RSC Advances

Modulating sensitivity and detection mechanism with spacer length: a new series of fluorescent turn on chemodosimeters for Pb2+ based on rhodamine–quinoline conjugates

Analytical Methods

A highly sensitive reversible fluorescent-colorimetric azino bis-Schiff base sensor for rapid detection of Pb2+ in aqueous media

Rapid estimation of lead in lipsticks

Journal	Data powered by TypesetSensors and Actuators, B: Chemical
Publisher	Data powered by TypesetElsevier B.V.
ISSN	0925-4005