02448nas a2200265   4500008004100000022001400041245008700055210006900142260007900211300001400290490000700304520150500311653001401816653001901830653002201849653001701871653002001888100002801908700003101936700003101967700002001998700001702018700002702035856012002062       2014                        eng d  a1001-841700aNovel synthesis and characterization of CuO nanomaterials: biological applications0 aNovel synthesis and characterization of CuO nanomaterials biolog  a360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USAbELSEVIER SCIENCE INCcDEC  a1615-16190 v253 a<p>CuO nanoparticles were synthesized at a relatively low temperature (80 degrees C) for 2 h using polyethylene glycol-glycerol mixture which acts as a capping agent. A detailed characterization of the synthesized nanomaterials were performed utilizing X-ray diffraction (XRD), infra-red spectroscopy (IR), thermogravimetric analysis (TGA-DTA), transmission electron microscopy (TEM), photoluminescence (PL) by studying its crystalline phase, vibrational mode, thermal analysis, morphology and photoluminescence properties. The effect of annealing on the as-prepared nanoparticles were studied and compared with their corresponding bulk counterpart. The synthesized nanoparticles have been screened for in vitro cytotoxicity (IC50) studies against the human cervical adenocarcinoma cell line (HeLa) using MTT assay methods. The as-prepared nanoparticle inhibits the proliferation of this HeLa cell. The standard disc diffusion method has been used to study the antibacterial activity of the samples against the human pathogenic bacteria Escherichia coli (MTCC 729), Proteus mirabilis (MTCC 425) and Klebsiella pneumoniae subsp. pneumoniae (MTCC 432). The results have been compared with the positive control antibiotic gentamycin. The synthesized nanoparticles would provide a potential alternative to antibiotics for controlling some of the microorganisms causing urolithiasis. (C) 2014 Meitram Niraj Luwang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.</p>10aAnnealing10aAntibacterials10aCuO nanoparticles10aCytotoxicity10aHeLa cell lines1 aDevi, Ayekpam, Bimolini1 aMoirangthem, Dinesh, Singh1 aTalukdar, Narayan, Chandra1 aDevi, Damayanti1 aSingh, Rajen1 aLuwang, Meitram, Niraj  uhttps://library.ncl.res.in/content/novel-synthesis-and-characterization-cuo-nanomaterials-biological-applications-002193nas a2200205   4500008004100000022001400041245018100055210006900236260000800305300001600313490000700329520137200336100002601708700001601734700002601750700003101776700002801807700002701835856012501862       2025                        eng d  a0743-746300aPrecursor-dependent heteroatom diversity in luminescent carbon quantum dots: their impact on physicochemical properties and free radical scavenging and antibacterial activities0 aPrecursordependent heteroatom diversity in luminescent carbon qu  cSEP  a24281-242940 v413 a<p>
	The fabrication of a multifunctional carbon quantum dot (CQD) from a novel carbon source is still continuing to be demanding and fascinating. The carbon precursor plays a crucial role in developing any particular properties of a CQD to suit a specific application. In this study, green (Rhus chinensis fruits) as well as chemical-based (ascorbic acid and urea) carbon sources were used for the fabrication of CQDs using a simple, cost-effective, and eco-friendly method. The various physicochemical and optical properties of R. chinensis fruit-derived CQD (CQD-RCF) and urea-assisted ascorbic acid-derived CQD (CQD-AAU) were thoroughly investigated by using multiple characterization techniques such as XRD, TEM, HR-TEM, Raman, XPS, FT-IR, UV-vis, PL, and zeta potential. The synthesized CQDs were screened for antioxidant properties by a DPPH assay and antibacterial activity by the agar tip-well method. Both of these synthesized CQDs exhibited a variety of dissimilarities regarding their heteroatom compositions and surface functional groups, which subsequently led to an enhanced DPPH radical scavenging efficacy of CQD-AAU and a declared antibacterial efficacy of CQD-RCF. Therefore, the outcome of this study shows that the physicochemical properties and functionalities of CQDs are influenced by the chemical composition of the precursor material.</p>
1 aKonwar, Pollab, Mohan1 aDevi, Suman1 aPandey, Satish, Kumar1 aDevi, Khomdram, Sandhyaran1 aDevi, Ayekpam, Bimolini1 aLuwang, Meitram, Niraj  uhttps://library.ncl.res.in/content/precursor-dependent-heteroatom-diversity-luminescent-carbon-quantum-dots-their-impact