A5101450840- Molecular Sensors and Ion Detection
- Luminescence and Fluorescent Materials
- Asymmetric Hydrogenation and Catalysis
- Analytical Chemistry and Chromatography
- Advanced Chemical Sensor Technologies
- Electrochemical Analysis and Applications
- Microfluidic and Capillary Electrophoresis Applications
- Advanced ceramic materials synthesis
- Synthesis and Catalytic Reactions
- Metal complexes synthesis and properties
- Carbon and Quantum Dots Applications
- Nanoplatforms for cancer theranostics
- Asymmetric Synthesis and Catalysis
- Advanced biosensing and bioanalysis techniques
- Organometallic Complex Synthesis and Catalysis
- Microwave-Assisted Synthesis and Applications
- Organometallic Compounds Synthesis and Characterization
- Chemical Synthesis and Analysis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Analytical chemistry methods development
- Inorganic Chemistry and Materials
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- Groundwater and Isotope Geochemistry
- Cyclopropane Reaction Mechanisms
University of Burdwan
2014-2020
Brigham Young University
2017-2018
Bhabha Atomic Research Centre
2001-2014
Oakland University
2013
Constructor University
2005-2007
University of Bremen
2006
Indian Institute of Technology Bombay
2003-2004
Dynamic to static excimer formation followed by lysine concentration dependent spectral shift of a single crystal X-ray structurally characterized pyrene based probe allows highly selective ratiometric detection at the nanomolar level.
Abstract A two‐step procedure for producing optically active, high value primary amines has been developed. The first and key step is the asymmetric reductive amination of a prochiral alkyl (acyclic or cyclic) aryl ketone with ( R )‐ S )‐α‐methylbenzylamine (α‐MBA). normally stepwise excessive procedures chiral auxiliary approaches are avoided by simultaneously incorporating new stereogenic center at former carbonyl carbon during one. Specifically, one hydrogenation (4–8 bar) substrate in...
A very simple molecule derived from salicylaldehyde and <italic>N</italic>-phenyl ethylenediamine (L1) functions as a dual-mode ratiometric fluorescence “turn on” sensor for Zn<sup>2+</sup> Al<sup>3+</sup> at two different wavelengths.
Abstract Groundwaters (borewell and handpump) were sampled from two districts (Bathinda Mansa) of Punjab state analyzed for their major ionic concentrations uranium isotope compositions in order to assess the possible origins waters water–rock interactions that occurred deep aquifer system. The plotted on a Piper diagram grouped into four dominant hydrochemical facies as (Na+K)-SO 4 +Cl type (69% – 73%), (Ca+Mg)-SO (6% 21%), (Ca+Mg)–HCO 3 (4% 6%) (Na+K)-HCO (2% 19%). It was observed mobility...
A single probe (<bold>L</bold>) can recognise both AcO<sup>−</sup> and Al<sup>3+</sup> as prepared by coupling 2-hydroxy-1-naphthaldehyde with hydrazine. The allows colorimetric fluorescence detection of the ions.
Several naphthalene-based aldazine derivatives were developed as efficient colorimetric and fluorescence probes for selective ratiometric recognition of traces zinc acetate. The derivative structures characterized by single-crystal X-ray diffraction. used in vitro tracking acetate endophytic bacteria within rice root tissue to image human breast cancer cells (MCF7) normal microscopy. Density functional theoretical studies close agreement with the experimental findings.
Thiophene appended rhodaminehydrazone derivative, RDHDTCA allows selective colorimetric and fluorescence recognition of Cu2+ as low 2.4 × 10−8 M. is capable to detect intracellular in human breast cancer cells, MCF7 under microscope.
Abstract A single crystal X‐ray structurally characterized probe (L), derived from 2‐amino‐1‐phenylpropan‐1‐ol and 2‐hydroxy‐1‐napthaldehyde selectively recognizes nano‐molar Zn 2+ both by fluorescence colorimetric method. Inhibition of excited‐state intra‐molecular proton transfer (ESIPT) ‐CH=N isomerization along with chelation‐enhanced (CHEF) collectively contribute to recognition. L exhibits excellent sensitivity (2×10 −9 M) selectivity for in aqueous DMSO (1:1, v/v) media useful...
[reaction: see text] A new method for the one-pot asymmetric reductive amination of prochiral aliphatic ketones has been developed. The previously unexplored reagent combination Ti(O(i)Pr)(4)/Raney Ni/H(2) in presence (R)- or (S)-alpha-methylbenzylamine provides good to excellent yield (76-90%) and diastereomeric excess (72-98%). second step, hydrogenolysis, corresponding primary amine high (88-93%) with uncompromised enantiomeric excess.
Several azine derivatives have been prepared and structurally characterized by spectroscopic single-crystal X-ray diffraction analysis. Two of them, viz. naphthalene based (A10) anthracene (A11) show fluorescence enhancement in the presence Ag+ aqueous-methanol. Moreover, A11 efficiently tracks Ag+in vitro endophytic bacteria infected rice root tissue. Experimental results substantiated theoretical DFT calculations.
A simple thiosemicarbazide-based chemodosimeter was employed to detect Ce<sup>4+</sup> ion through turn-on fluorescence.
Abstract Reductive amination of keto esters 1 with α‐methylbenzylamine (α‐MBA) in the presence hydrogen and Raney‐Ni allows direct access to diastereomeric amino 2 good high de (72–94 %). For α‐keto ester 1d β‐keto 1a , 1b 1c reaction is optimally performed AcOH, while γ‐keto 1h requires Ti(O i Pr) 4 . The reductive product an advanced homophenylalanine building block for Angiotensin Converting Enzyme (ACE) inhibitor drugs. converted two additional steps a protected chiral...
A phthalaldehyde based colorimetric and fluorescence probe (BENPH), selective for tryptophan (Trp) histidine (His) has been developed. BENPH its Trp His adducts are characterized by FTIR, 1H NMR ESI-Mass spectroscopy. Computational studies support the experimental findings. can image intracellular under a microscope. The developed method is used to determine in fish muscle.
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