A5039696026- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Magnetism in coordination complexes
- Molecular Sensors and Ion Detection
- Crystallography and molecular interactions
- Luminescence and Fluorescent Materials
- Lanthanide and Transition Metal Complexes
- Advanced biosensing and bioanalysis techniques
- Organometallic Complex Synthesis and Catalysis
- Metal-Catalyzed Oxygenation Mechanisms
- Electrochemical Analysis and Applications
- Ferrocene Chemistry and Applications
- Inorganic and Organometallic Chemistry
- Metal-Organic Frameworks: Synthesis and Applications
- Analytical Chemistry and Sensors
- Photochromic and Fluorescence Chemistry
- Sulfur Compounds in Biology
- Click Chemistry and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Photochemistry and Electron Transfer Studies
- Synthesis and Biological Evaluation
- Porphyrin and Phthalocyanine Chemistry
- Crystal structures of chemical compounds
- Asymmetric Hydrogenation and Catalysis
Jadavpur University
2016-2025
New York State Department of Health
2008-2024
Wadsworth Center
2005-2024
Nil Ratan Sircar Medical College and Hospital
2016-2024
Medical College and Hospital, Kolkata
2024
Biogen (India)
2024
Chittaranjan National Cancer Institute
2024
National Research Centre on Plant Biotechnology
2020-2021
Indian Council of Agricultural Research
2020
National Bureau of Plant Genetic Resources
2010-2016
A spirobenzopyran-quinoline (SBPQ) based sensor was synthesized which selectively detects trivalent ions viz. Al3+, Fe3+ and Cr3+ through a fluorescence turn on signal in the red region (∼675 nm) with detection limit order of 10−8 M. The potentiality probe confirmed by employing it for bio-imaging Al3+ three different types live-cells.
Two rare examples of azo anion diradical complexes Rh(III) are reported. These showed excellent memory switching properties with a large ON/OFF ratio and suitable for RAM/ROM applications. Their electronic structures have been elucidated using host physical methods, including X-ray crystallography, variable-temperature magnetic susceptibility measurement, cyclic voltammetry, electron paramagnetic resonance spectroscopy, density functional theory. The results indicate predominant triplet...
Four dinuclear and three mononuclear ZnII complexes of phenol-based compartmental ligands (HL1–HL7) have been synthesized with the aim to investigate viability a radical pathway in catecholase activity. The characterized by routine physicochemical studies as well X-ray single-crystal structure analysis: [Zn2(H2L1)(OH)(H2O)(NO3)](NO3)3 (1), [Zn2L2Cl3] (2), [Zn2L3Cl3] (3), [Zn2(L4)2(CH3COO)2] (4), [Zn(HL5)Cl2] (5), [Zn(HL6)Cl2] (6), [Zn(HL7)Cl2] (7) [L1–L3 L5–L7 =...
A novel organic receptor, CPI, was fabricated for selective and sole recognition of CN − in real samples.
This study addresses a novel palladium dihalide complex, cis‐[Pd(PCAH)Cl2] (C1), as promising anticancer agent. XRD analysis reveals deformed square planar geometry stabilized by hydrogen bonds and π•••π interactions. The M‐Cl in C1 demonstrate susceptibility to nucleophilic substitution 2,2'‐bipyridine (Bpy), with kinetic parameters evaluated using spectrophotometry. Fluorometric spectrophotometric investigations that binds CT DNA protein an avidity of around 105 M−1. interaction is...
A new fluorescent probe was synthesized from rhodamine-6G and 6-(hydroxymethyl) picolinohydrazide for the sensing of Fe3+ in an aqueous environment. The structure sensor confirmed through its single crystal X-ray study. It exhibits a high specificity sensitivity towards over other interfering heavy transition metal ions (HTM). turn-on greenish-yellow fluorescence colorimetric change colourless to pink were observed upon addition which evokes almost 116- 23-fold enhancement absorbance...
A new quinoline based sensor was developed and applied for the selective detection of Cd<sup>2+</sup> both <italic>in vitro</italic> vivo</italic>.
A new coumarin-appended thioimidazole-linked imine conjugate,<italic>viz</italic>.<bold>L</bold>has been synthesized and characterized for a selective<italic>turn-on</italic>fluorescence chemosensor Cu<sup>2+</sup>.
A mononucleating (HL1) and a dinucleating (HL2) “end-off” compartmental ligand have been designed synthesized by controlled Mannich reaction using p-cresol bis(2-methoxyethyl)amine, their formation has rationalized. Six complexes prepared on treating HL1 HL2 with ZnIIX2 (X = Cl–, Br–, I–) the aim to investigate hydrolytic activity phosphoester bond cleavage. Interestingly, was observed yield dinuclear complexes, [Zn2(L1)2X2] (1–3), while potential generated mononuclear [Zn(HL2)X2] (4–6)....
Given the ubiquitous and multifaceted role of copper ions in various biological processes, we report herein one-pot facile synthesis, X-ray structure, Hirshfeld surface analysis, enzyme-like activities, biomolecular interactions three mononuclear copper(II) complexes, [Cu(L)(X)] (1-3) with a tridentate quinoline-based salicylaldimine Schiff base (LH) having an N2O donor set where X denotes NCS, N3, NO3 for complexes 1, 2, 3, respectively. Single-crystal study, spectroscopic techniques, DFT,...
A new dinuclear nickel(II) complex, [Ni2(LH2)(H2O)2(OH)(NO3)](NO3)3 (1), of an "end-off" compartmental ligand 2,6-bis(N-ethylpiperazine-iminomethyl)-4-methyl-phenolato, has been synthesized and structurally characterized. The X-ray single crystal structure analysis shows that the piperazine moieties assume expected chair conformation are protonated. complex 1 exhibits versatile catalytic activities biological significance, viz. catecholase, phosphatase, DNA cleavage activities, etc....
Seven dinuclear and one based dicyanamide bridged polymeric NiII complexes of phenol compartmental ligands (HL1–HL4) have been synthesized with the aim to investigate their catecholase-like activity evaluate most probable mechanistic pathway involved in this process. The characterized by routine physicochemical studies as well X-ray single crystal structure analyses namely [Ni2(L2)(SCN)3(H2O)(CH3OH)] (1), [Ni2(L4)(SCN)3(CH3OH)2] (2), [Ni2(L2)(SCN)2(AcO)(H2O)] (3), [Ni2(L4)(SCN)(AcO)2] (4),...
A new chelating ligand [4-methyl-2,6-bis-(pyridin-2-yl-hydrazonomethyl)-phenol] (1) was prepared by the condensation of 2-hydrazinylpyridine with 2,6-diformyl-p-cresol. Compound 1 exhibits weak fluorescence due to intramolecular photoinduced electron transfer (PET). The sensor demonstrates Zn(2+)-specific emission enhancement “PET off” process through a 1:1 binding mode metal ion. quantum yield chemosensor is only 0.020, and it increases more than 14-fold (0.280) in presence one equivalent...
A coumarin based fluorescence ‘turn-on' chemosensor (HL) for the selective detection of Zn<sup>2+</sup> and HSO<sup>4¬</sup> has been developed. Emission intensity HL is enhanced by 27 17 fold in presence respectively. Theoretical study interprets electronic structure sensing mechanism HL.
A novel colorimetric and fluorescent sensing probe, CBTA, was designed for the selective detection of CN − .
Considering the crisis of single probes for simultaneous colorimetric detection both Cu2+ and Pd2+ metal ions, which are toxic to living organisms even in trace amounts, this communication, we report facile synthesis characterization, including single-crystal X-ray diffraction (SCXRD), a molecular probe (E)-3-((2-(methylthio)phenyl)diazenyl)-[1,1′-biphenyl]-4-ol (TABH). TABH is bioactive avidly interacts with biomolecules such as BSA protein CT DNA, evidenced by spectrofluorometric...
Three new compounds, [Ru(Q(*-))(acac)(2)] = 1, [Ru(Q(*-))(2)(acac)] 2, and [Ru(Q(*-))(3)] 3, were obtained characterized as Ru(III) complexes with 4,6-di-tert-butyl-N-phenyl-o-iminobenzosemiquinone (Q(*-)) ligands. All three systems show multiple electron transfer behavior, which was analyzed using paramagnetic resonance (EPR) UV-vis-near-infrared (NIR) spectroelectrochemistry. (1)H NMR spectroscopy a crystal structure analysis suggest antiferromagnetically spin-spin coupled Q(*-) in similar...