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91.
P. K. Khanna Deepti Kulkarni Rupinder K. Beri 《Journal of nanoparticle research》2008,10(6):1059-1062
Reduction of silver myristate (AgMy) under mild thermal reaction conditions in a dipolar aprotic solvent i.e. N, N-dimethylformamide (DMF) has been carried out. UV–visible absorption measurements of dried and re-dispersible brown flocculants
showed broad features of surface plasmon resonance (SPR) due to silver nanoparticles. The freshly isolated particles showed
absorption bands at 414 and 485 nm, respectively, due to inter-particle coupling or clustering of silver ions and silver atoms.
X-ray diffraction (XRD) pattern of fcc zero-valent silver resulted in crystallite size of about 10 nm. Scanning electron microscopy
(SEM) revealed formation of rod shaped silver with increasing reaction temperature. Thermal analysis (TGA) showed about 10%
weight loss due to organic capping. 相似文献
92.
Srinivasa Budagumpi M. P. Sathisha Naveen V. Kulkarni Gurunath S. Kurdekar Vidyanand K. Revankar 《Journal of inclusion phenomena and macrocyclic chemistry》2010,66(3-4):327-333
A series of new 24-membered macrocyclic CoII, NiII, CuII and ZnII complexes of the ligands L1H2 and L2H2 were prepared by the non-template and template methods respectively. The ligand L1H2 was formed by the condensation of pyrazole-3,5-dicarbohydrazide and glyoxal and all attempts to isolate the ligand L2H2 were unsuccessful. These, ligand and transition metal complexes were characterized on the basis of elemental analysis, IR, 1HNMR, UV–Visible, magnetic susceptibility measurements, ESR, conductivity measurements, FAB-mass and thermal analysis. The redox behavior of metal ions in the polyazamacrocyclic ligand field is also studied. Electroreduction of carbon dioxide to carbon monoxide is mainly focused on using polydentate azamacrocyclic ligands with amine and imine functionalities, based on the electrochemical behavior of nickel (II) ion in the macrocyclic territory. 相似文献
93.
Kulkarni NV Budagumpi S Kurdekar GS Revankar VK Didagi S 《Chemical & pharmaceutical bulletin》2010,58(12):1569-1575
A novel Cu(II) and Zn(II) complexes of triazolo-quinoline derivatives were synthesized by in situ method and were characterized by the spectro-analytical methods and their pharmacological properties were evaluated. The compound C3 has exhibited promising anticonvulsant activity towards the electroshock induced seizures in Wistar rats and possesses low toxicity, providing a high safety profile. 相似文献
94.
This paper reports on the spectral (response) characteristics of fiber Bragg grating sensor to various methanol concentrations. A complete experimental analysis on the use of Ge-B co-doped fiber Bragg grating sensor for a concentration and refractive index measurement is presented. The spectral changes in the grating response due to variation of concentration have been investigated in relation to new sensing configurations. The results also highlight the possibilities of using the sensor for medical and biological applications. 相似文献
95.
M.?Prabu S.?SelvasekarapandianEmail author A.?R.?Kulkarni S.?Karthikeyan G.?Hirankumar C.?Sanjeeviraja 《Ionics》2011,17(3):201-207
Olivine-structured pure LiNiPO4 and yttrium-doped LiNiPO4 have been synthesized by a Pechini-type polymerizable precursor method. Compound formation temperature is confirmed from
thermogravimetry to differential thermal analysis. Powder X-ray diffraction pattern confirmed the formation of phase pure
LiNiPO4 compound with an orthorhombic structure with fine crystallite size. Presence of preferred local cation environment is understood
from Fourier transform infrared spectroscopy (FTIR) studies. XRD and FTIR studies show that doped yttrium ion entered in the
lattice of LiNiPO4. It has been found that the ionic conductivity of LiNiPO4 is enhanced by around two orders of magnitude by doping yttrium. Dielectric spectra show the decrease in dielectric constant
with increase in frequency. Dielectric loss spectra reveal that dc conduction contribution predominates in the sample. 相似文献
96.
MD. Daloar Hossain Le Thi Bao Tran Jong Myung Park Kwon Taek Lim 《Journal of polymer science. Part A, Polymer chemistry》2010,48(22):4958-4964
A new, efficient method for synthesizing stable nanoparticles with poly(ethylene oxide) (PEO) functionalities on the core surface, in which the micellization and crosslinking reactions occur in one pot, has been developed. First, amphiphilic PEO‐b‐PS copolymers were synthesized by reversible addition fragmentation chain transfer (RAFT) radical polymerization of styrene using (PEO)‐based trithiocarbonate as a macro‐RAFT agent. The low molecular weight PEO‐b‐PS copolymer was dissolved in isopropyl alcohol where the block copolymer self‐assembled as core‐shell micelles, and then the core‐shell interface crosslink was performed using divinylbenzene as a crosslinking agent and 2,2′‐azobisisobutyronitrile as an initiator. The design of the amphiphilic RAFT agent is critical for the successful preparation of core‐shell interface crosslinked micellar nanoparticles, because of RAFT functional groups interconnect PEO and polystyrene blocks. The PEO functionality of the nanoparticles surface was confirmed by 1H NMR and FTIR. The size and morphology of the nanoparticles was confirmed by scanning electron microscopy, transmission electron microscopy, and dynamic laser light scattering analysis. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010 相似文献
97.
Rajesh G. Kalkhambkar Geeta M. Kulkarni Jagannath C. Kadakol G. Aridoss Yeon Tae Jeong Manohar V. Kulkarni 《Journal of heterocyclic chemistry》2013,50(5):1108-1115
A synthesis, characterization, and antimicrobial study of a novel benzodipyran analog of chloramphenicol was carried out. Structure–antimicrobial activity relationship study indicates that benzodipyran analog of chloramphenicol was most active against Gram‐positive bacteria, Staphylococcus aureus, and the fungal strains Rhizoctonia bataticola and Penicillium even at minimum inhibitory concentration 10 µg/mL and showed moderate activity in other bacterial and fungal organisms. All the compounds synthesized during the present investigation were characterized by IR, 1H NMR, 13C NMR, ESI‐MS, and elemental analysis. 相似文献
98.
99.
Desai Neha S. Barhate Chandrashekhar R. Biyani Sheetal O. Kulkarni Savita R. Nagarsenker Mangal S. 《平面色谱法杂志一现代薄层色谱法》2011,24(4):306-311
JPC – Journal of Planar Chromatography – Modern TLC - Annona squamosa, commonly known as custard apple, possesses various medicinal properties such as antimicrobial, insecticidal,... 相似文献
100.
Nilesh S. Kanhe Sunil U. Tekale Naveen V. Kulkarni Ashok B. Nawale A. K. Das Sudha V. Bhoraskar Rajeeta D. Ingle Rajendra P. Pawar 《Journal of the Iranian Chemical Society》2013,10(2):243-249
The present work reports the application of micron-particulate crystalline hexagonal aluminium nitride/aluminium as a novel, mild acidic and reusable solid heterogeneous catalyst in organic synthesis. The catalyst was synthesized by thermal plasma technique and characterized using X-ray diffractometer and scanning electron microscopy. It catalyzes efficiently many organic transformations such as the synthesis of heterocyclic compounds 2,4,5-triaryl-substituted imidazoles and 2-aryl benzimidazoles. 相似文献