NDLI: Green synthesis of gold nanoparticles using Trigonella foenum-graecum and its size-dependent catalytic activity.

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Green synthesis of gold nanoparticles using Trigonella foenum-graecum and its size-dependent catalytic activity.

Elaborated studies for the ligitional behavior of thiouracil derivative towards Ni(II), Pd(II), Pt(IV), Cu(II) and UO2 ² ions.

Speciation of arsenic (III) and arsenic (V) based on quenching of CdS quantum dots fluorescence using hybrid sequential injection-stopped flow injection gas-diffusion system.

Electron irradiation effects on optical properties of semiorganic antimony thiourea tetra chloride single crystals.

Investigations of g factors for the ²E state of V²â º ions in Al2O3 crystals.

Structural, spectroscopic and voltammetric studies of bis(acetazolamido)bis(aquo)bis(nicotinamide)copper(II).

Fluorescent film sensors based on SAMs of pyrene derivatives for detecting nitroaromatics in aqueous solutions.

Determination of nonlinear absorption and refraction in direct and indirect band gap crystals by Z-scan method.

DNA interactions and cytotoxic studies of cis-platin analogues of substituted 2,2'-bipyridines.

Colorimetric detection of copper and chloride in DMSO/H2O media using bromopyrogallol red as a chemosensor with analytical applications.

Interaction of drug based copper(II) complexes with Herring Sperm DNA and their biological activities.

Synthesis, characterization and interaction of N,N'-dipyridoxyl (1,4-butanediamine) Co(III) salen complex with DNA and HSA.

Studies on the synthesis, spectral, optical and thermal properties of l-Valine Zinc Sulphate: an organic inorganic hybrid nonlinear optical crystal.

Novel acid mono azo dye compound: synthesis, characterization, vibrational, optical and theoretical investigations of 2-[(E)-(8-hydroxyquinolin-5-yl)-diazenyl]-4,5-dimethoxybenzoic acid.

Highly selective colorimetric sensing of Cu(II) ions in aqueous solution via modulation of intramolecular charge transfer transition of aminonaphthoquinone chemosensor.

Synthesis, crystal structures and luminescent properties of two one-dimensional cadmium(II) coordination polymers generated from polydentate Schiff-base ligand.

Variational study on the vibrational level structure and vibrational level mixing of highly vibrationally excited S0 D2CO.

Interaction of amphiphilic drugs with human and bovine serum albumins.

Physico-chemical studies on some fluorescence sensors: DFT based ESIPT process.

Computational studies of 1,2-disubstituted benzimidazole derivatives.

Interaction between the ionic liquids 1-alkyl-3-methylimidazolium tetrafluoroborate and Pluronic® P103 in aqueous solution: a DLS, SANS and NMR study.

Molecular structure, spectroscopic studies (FTIR, FT-Raman and NMR) and HOMO-LUMO analysis of 6-chloro-o-cresol and 4-chloro-3-methyl phenol by density functional theoretical study.

Study on the inclusion behavior of p-sulfonatocalix[6]arene with propranolol by spectrofluorometry.

Determination of carbazochrome by fluorescence quenching method.

Synthesis, spectroscopic properties and theoretical studies of bis-Schiff bases derived from polyamine and pyrazolones.

Synthesis of N4 donor macrocyclic Schiff base ligands and their Ru (II), Pd (II), Pt (II) metal complexes for biological studies and catalytic oxidation of didanosine in pharmaceuticals.

A comparative study on vibrational, conformational and electronic structure of 1,2-dimethyl-5-nitroimidazole and 2-methyl-5-nitroimidazole.

Highly luminescent lanthanide complexes with novel bis-ß-diketone ligand: synthesis, characterization and photoluminescent properties.

Structural study, coordinated normal analysis and vibrational spectra of 4-hydroxy-3-(3-methyl-2-butenyl)acetophenone.

Interaction mechanism between berberine and the enzyme lysozyme.

Experimental and theoretical spectroscopic studies, HOMO-LUMO, NBO and NLMO analysis of 3,5-dibromo-2,6-dimethoxy pyridine.

Analytical methods to determine the comparative DNA binding studies of curcumin-Cu(II) complexes.

Spectroscopic (FT-IR, FT-Raman, UV and NMR) investigation and NLO, HOMO-LUMO, NBO analysis of organic 2,4,5-trichloroaniline.

Comparison of fluorescence spectroscopy and FTIR in differentiation of plant pollens.

Coordination behavior of tetraaza [N4] ligand towards Co(II), Ni(II), Cu(II), Cu(I) and Pd(II) complexes: synthesis, spectroscopic characterization and anticancer activity.

H/D isotopic recognition mechanism in hydrogen-bonded crystals of 3-methylacetanilide and 4-methylacetanilide.

A fluorescent benzothiazole probe with efficient two-photon absorption.

Measurement of process variables in solid-state fermentation of wheat straw using FT-NIR spectroscopy and synergy interval PLS algorithm.

Selective and sensitive spectrophotometric method for the determination of trace amounts of zirconium in environmental and biological samples using 4-chloro-N-(2,6-dimethylphenyl)-2-hydroxy-5-sulfamoylbenzamide.

Discrimination of different genuine Danshen and their extracts by Fourier transform infrared spectroscopy combined with two-dimensional correlation infrared spectroscopy.

Preparation of a DNA-bound [Ru(bpy)2(mbpibH2)]²+ film and its two-mode luminescence tuning by copper(II) ions and EDTA.

Synthesis characterization and catalytic action of hexagonal gold nanoparticles using essential oils extracted from Anacardium occidentale.

Experimental (FT-IR and FT-Raman) and theoretical (HF and DFT) investigation, NMR, NBO, electronic properties and frequency estimation analyses on 2,4,5-trichlorobenzene sulfonyl chloride.

A direct comparison of nanosilver particles and nanosilver plates for the oxidation of ascorbic acid.

First principles study on the molecular structure and vibrational spectra of ketoprofen.

Experimental and theoretical spectroscopic studies of anticancer drug rosmarinic acid using HF and density functional theory.

New naphthalimide modified polyethylenimine nanoparticles as fluorescent probe for DNA detection.

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Synthesis and studies on Cu(II), Co(II), Ni(II) complexes of Knoevenagel ß-diketone ligands.

Selective quenching of benzimidazole derivatives by Cu²+ metal ion.

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Ligational behavior of Schiff bases towards transition metal ion and metalation effect on their antibacterial activity.

Binding studies of the antidiabetic drug, metformin to calf thymus DNA using multispectroscopic methods.

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New tetradentate Schiff bases of 2,2-dimethyl-1,3-diaminopropane and acetylacetone derivatives and their vanadyl complexes.

One pot synthesis, structural and spectral analysis of some symmetrical curcumin analogues catalyzed by calcium oxide under microwave irradiation.

Effect of colloidal silica on the spectral behaviour of 7-hydroxycoumarin in aqueous medium.

FT-IR, FT-Raman and UV-Vis spectra and DFT calculations of 3-cyano-4-methylcoumarin.

Colorimetric detection of Hg²+ ions in aqueous media using CA-Au NPs.

Luminescence switching of CdTe quantum dots in presence of water-soluble spironaphthoxazine.

TD-DFT study on the excited-state proton transfer in the fluoride sensing of a turn-off type fluorescent chemosensor based on anthracene derivatives.

Enantioselective binding interaction of the metolachlor pesticide enatiomers with bovine serum albumin--a spectroscopic analysis study.

Spectroscopic analyses of pollutants in water, sediment and fish.

Studies on growth, spectral, optical and mechanical properties of new organic NLO crystal: guanidinium L-glutamate (GuGL).

Design, synthesis and DNA binding activities of late first row transition metal(II) complexes of bi- functional tri - and tetratopic imines.

Dynamic Jahn-Teller effect for V²+ in MgO single crystal.

A new coupling of spectrophotometric determination with ultrasound-assisted emulsification dispersive liquid-liquid microextraction of trace silver.

Optical properties of Eu³+ ions in phosphate glasses.

Growth and characterization of anilinium hydrogen sulfate (AHS) single crystals: an organic nonlinear optical material.

Optical properties of photo- and thermo-responsive aqueous CdTe quantum dots/spironaphthoxazine/poly(N-isopropylacrylamide) hybrid.

Vibrational spectra, UV and NMR, first order hyperpolarizability and HOMO-LUMO analysis of 2-amino-4-chloro-6-methylpyrimidine.

Infrared to visible upconversion in Ho³+/Yb³+ co-doped Y2 O3 phosphor: effect of laser input power and external temperature.

Structure and UV-induced photochemistry of 2-furaldehyde dimethylhydrazone isolated in rare gas matrices.

Vibrational spectra and density functional theoretical calculations on the anti-neurodegenerative drug: Orphenadrine hydrochloride.

UV-visible spectroscopic estimation of photodegradation of rhodamine-B dye using tin(IV) oxide nanoparticles.

A novel pentanuclear zinc coordination polymer with one-dimensional chain: synthesis, structure and luminescent property.

Nitrile group as infrared probe for the characterization of the conformation of bovine serum albumin solubilized in reverse micelles.

Coordination behavior of ligand based on NNS and NNO donors with ruthenium(III) complexes and their catalytic and DNA interaction studies.

Studies on the effect of polymer coating on solution grown hygroscopic non-linear optical single crystal of L-lysine monohydrochloride.

New 1,2,4-triazole-based azo-azomethine dyes. Part II: synthesis, characterization, electrochemical properties and computational studies.

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Molecular structure investigation and spectroscopic studies on 2,3-difluorophenylboronic acid: a combined experimental and theoretical analysis.

Ultrasensitive and rapid lead sensing in water based on environmental friendly and high luminescent L-glutathione-capped-ZnSe quantum dots.

A novel luminescent terbium-3-carboxycoumarin probe for time-resolved fluorescence sensing of pesticides methomyl, aldicarb and prometryne.

N-cyclohexyl-2-[5-(4-pyridyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-ylsulfanyl]-acetamide dihydrate: synthesis, experimental, theoretical characterization and biological activities.

Modulation of synthetic parameters of novel zinc nanoparticles and reducing agent: powder X-ray diffraction, transmission electron microscopy and spectral studies.

Solid state simulation of tetramer form of 5-aminoorotic acid: the vibrational spectra and molecular structure study by using MP2 and DFT calculations.

DFT and experimental prediction of negative chemical shifts of methyl protons in some piperidines.

Spectroscopic investigations on Pr³+ and Nd³+ doped strontium-lithium-bismuth borate glasses.

Molecular structure and vibrational study of diprotonated guanazolium using DFT calculations and FT-IR and FT-Raman spectroscopies.

Nondestructive identification for red ink entries of seals by Raman and Fourier transform infrared spectrometry.

Crystal structure, spectral, thermal and dielectric studies of a new zinc benzoate single crystal.

A novel surface-enhanced Raman scattering nanosensor for detecting multiple heavy metal ions based on 2-mercaptoisonicotinic acid functionalized gold nanoparticles.

Synthesis, structure, photo-responsive properties of 4-(2-fluorobenzylideneamino)antipyrine: a combined experimental and theoretical study.

Rotational isomers, density functional theory, vibrational spectroscopic studies, thermodynamic functions, NBO and HOMO-LUMO analyses of 2,6-Bis(chloromethyl)pyridine.

Synthesis, characterization and electrochemical study of synthesis of a new Schiff base (H2cddi(t)butsalen) ligand and their two asymmetric Schiff base complexes of Ni(II) and Cu(II) with NN'OS coordination spheres.

Molecular structure, natural bond analysis, vibrational, and electronic spectra of aspartateguanidoacetatenickel(II), [Ni(Asp)(GAA)]·H2O: DFT quantum mechanical calculations.

FTIR spectroscopy study of the structure changes of palygorskite under heating.

Raman and infrared spectroscopic characterization of beryllonite, a sodium and beryllium phosphate mineral - implications for mineral collectors.

Synthesis, structural elucidation and spectroscopic analysis of 3a,8b-dihydroxy-4-oxo-1H,2H,3H,3aH,4H,8bH-indeno[1,2-d]imidazolidin-2-iminium chloride.

Spectroscopic study of the ground and excited state prototropic equilibria of 4-azaindole.

Vibrational spectroscopic analysis of 2-chloro-5-(2,5-dimethoxy-benzylidene)-1,3-diethyl-dihydro-pyrimidine-4,6(1H,5H)-dione.

FT-Raman spectroscopic analysis of the most probable structures in aluminum chloride and tetrahydrofuran solutions.

Interaction between holo transferrin and HSA-PPIX complex in the presence of lomefloxacin: an evaluation of PPIX aggregation in protein-protein interactions.

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Synthesis, growth and vibrational spectroscopic study of a novel coumarinoylthiazole.

Synthesis, spectroscopic, thermal and antimicrobial studies of toluene-3,4-dithiolatoarsenic(III) derivatives with some oxygen and sulphur donor ligands.

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Growth and characterization of Methyl 2-amino-5-bromobenzoate crystal for NLO applications.

Study on the conformation changes of Lysozyme induced by Hypocrellin A: the mechanism investigation.

Physicochemical insights in non-covalent interaction of a newly designed triporphyrin with fullerenes C60 and C70 in solution.

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Green synthesis of gold nanoparticles using Trigonella foenum-graecum and its size-dependent catalytic activity.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Philip, Daizy Aswathy Aromal, S.
Description	Country affiliation: India Author Affiliation: Aswathy Aromal S ( Department of Physics, Mar Ivanios College, Thiruvananthapuram 695015, India.)
Abstract	The development of new synthesis methods for monodispersed nanocrystals using cheap and nontoxic chemicals, environmentally benign solvents and renewable materials remains a challenge to the scientific community. Most of the current methods involve known protocols which may be potentially harmful to either environment or human health. Recent research has been focused on green synthesis methods to produce new nanomaterials, ecofriendly and safer with sustainable commercial viability. The present work reports the green synthesis of gold nanoparticles using the aqueous extract of fenugreek (Trigonella foenum-graecum) as reducing and protecting agent. The pathway is based on the reduction of AuCl(4)(-) by the extract of fenugreek. This method is simple, efficient, economic and nontoxic. Gold nanoparticles having different sizes in the range from 15 to 25 nm could be obtained by controlling the synthesis parameters. The nanoparticles have been characterized by UV-Visible spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD) and FTIR analysis. The high crystallinity of nanoparticles is evident from clear lattice fringes in the HRTEM images, bright circular spots in the SAED pattern and peaks in the XRD pattern. FTIR spectrum indicates the presence of different functional groups present in the biomolecule capping the nanoparticles. The synthesized gold nanoparticles show good catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol by excess NaBH(4). The catalytic activity is found to be size-dependent, the smaller nanoparticles showing faster activity.
ISSN	13861425
Volume Number	97
e-ISSN	18733557
Journal	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Language	English
Publisher	Elsevier
Publisher Date	2012-11-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gold Chemistry Green Chemistry Technology Methods Metal Nanoparticles Particle Size Trigonella Catalysis Colloids Hydrogen-ion Concentration Ultrastructure Nitrophenols Spectrophotometry, Ultraviolet Spectroscopy, Fourier Transform Infrared X-ray Diffraction Journal Article Discipline Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation

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