Oxidized bis (indolyl) methane derivatives with diverse signaling units: an excitation-dependent fluorescence response toward heavy metal pollutants in an aqueous …

RS Fernandes, N Dey - Industrial & Engineering Chemistry …, 2023 - ACS Publications
Herein, we have designed and synthesized two oxidized bis (indolyl) methane derivatives
with pyrene and anthracene as signaling moieties. Both the amphiphilic compounds …

Metal ion responsive bifunctional bis (indolyl) methane derivative: Excitation-triggered alteration in the sensing behavior

RS Fernandes, N Dey - Materials Chemistry and Physics, 2023 - Elsevier
Bisindolyl based chromogenic probe with a bispicolyl binding site has been designed, that
can form nanoscopic aggregates in water medium. The compound showed selective …

Dual-mode multiple ion sensing via analyte-specific modulation of keto–enol tautomerization of an ESIPT active pyrene derivative: experimental findings and …

S Paul, A Ray Choudhury, N Dey - ACS omega, 2023 - ACS Publications
A pyrene-based e xcited-state intramolecular proton transfer (ESIPT) active probe PMHMP
was synthesized, characterized, and employed for the ppb-level, dual-mode, and high …

Improved analytical performance of an amphiphilic probe upon protein encapsulation: spectroscopic investigation along with computational rationalization

S Paul, S Mondal, N Dey - ACS Applied Bio Materials, 2023 - ACS Publications
An easily synthesizable pyrene-based amphiphilic probe (Pybpa) has been developed,
which exhibited no responses with metal ions in the pure aqueous medium despite …

Sequence‐Specific Relay Recognition of Multiple Anions: An Interplay between Proton Donors and Acceptors

RS Fernandes, S Paul, N Dey - ChemPhysChem, 2023 - Wiley Online Library
Ratiometric detection of analyte is highly deserving since the technique is free from
background correction. This work reports the design and synthesis of a pyridine‐end oligo p …

Anion binding studies with anthraimidazoledione-based positional isomers: A comprehensive analysis of different strategies for improved selectivity

RS Fernandes, N Dey - Talanta, 2022 - Elsevier
In the present work, we have reported the design of three different positional isomers of
anthraimidazoledione-based charge transfer probes and their anion-binding properties …

Visual detection and tracking of toxic mercury in biological cells using biocompatible mesoporous silica nanospheres

IM El-Sewify, MA Shenashen, RF ElAgamy… - Sensors and Actuators B …, 2024 - Elsevier
A novel, cost-effective, eco-friendly, and straightforward approach is urgently required to
assess the distribution, localization, and concentration of toxins in biological cells, as their …

Label-free multimodal analysis of copper ions at below permissible exposure limit in the aqueous medium

B Chettri, RS Fernandes, S Jha, N Dey - Spectrochimica Acta Part A …, 2024 - Elsevier
An anthraimidazoledione based amphiphilic dye molecule was synthesized that shows
formation of tuneable charge-transfer state in solution, susceptible to change in pH, polarity …

Phenazine-based fluorescence probes for simultaneous sensing of silver and iodide ions

HV Barkale, N Dey - Journal of Molecular Structure, 2024 - Elsevier
The selective and sensitive detection of silver ions (Ag+) and iodide ions (I−) is of paramount
importance in various scientific and industrial domains. In this paper, we present phenazine …

Metal-ion-responsive chromogenic probe for rapid, on-location detection of foodborne bacterial pathogens in contaminated food items

N Dey - ACS Applied Bio Materials, 2021 - ACS Publications
An amphiphilic chromogenic probe based on an oxidized di (indolyl) arylmethane backbone
has been utilized for visual detection of both Cu2+ (detection limit= 8.5 ppb) and Hg2+ …