01738nas a2200241   4500008004100000245006800041210006700109260000800176300001200184490000800196520100300204100002401207700001801231700001601249700001401265700002001279700002001299700001701319700002601336700001801362700001601380856010001396       2018                        eng d00aStructural and magnetic properties of La2Ni1-xCoxMnO6 compounds0 aStructural and magnetic properties of La2Ni1xCoxMnO6 compounds  cJUN  a248-2560 v1023 aSingle phase monoclinic La2Ni1-xMnO6 (x = 0.2, 0.4, 0.8) compounds, henceforth, referred as LNCxMO (x = 0.2, 0.4, 0.8) have been prepared by Sol-gel technique. The structural study and redox titration suggest that the samples are both La and O deficient. The generated atomic models using Rietveld refined structural parameters show octahedral distortion In the double perovskite structure. X-ray photoelectron spectroscopy (XPS) study has been used to determine the predominant valence states of Ni, Mn and Co ions. LNCxMO (x = 0.2, 0.4) are found to be Heisenberg ferromagnets whereas LNC0.8MO is a phase segregated system. In LNC0.4MO and LNO0.8MO, at temperatures above T-c, chi(-1)(T) curve shows the characteristics of Griffiths phase. The study of ac susceptibility and Isothermal remanent magnetization (IRM) discard the possibility of any glassy state at low temperatures. The antiphase boundaries (APBs), antisite disorders (ASDs) and oxygen vacancies play important roles in this system.1 aPramanik, Debabrata1 aMukherjee, S.1 aDan, Shovan1 aNandy, A.1 aPradhan, S., K.1 aDasgupta, Papri1 aPoddar, Asok1 aMukherjee, Manabendra1 aManjunath, B.1 aJoy, P., A.  uhttps://library.ncl.res.in/content/structural-and-magnetic-properties-la2ni1-xcoxmno6-compounds00991nas a2200169   4500008004100000245013000041210007100171260000800242300001200250490000700262520034200269100001500611700001800626700001800644700001700662856014200679       2019                        eng d00aNHC-catalyzed generation of α,β-unsaturated acylazoliums for the enantioselective synthesis of heterocycles and carbocycles0 aNHCcatalyzed generation of αβunsaturated acylazoliums for the en  cFEB  a425-4360 v523 a<p>It is reasonable to believe that the chemistry of α,β-unsaturated acylazoliums, catalytically generated through NHCs, will continue to flourish and will lead to amazing results. Future challenges in this area include the applications of this key intermediate in the synthesis of biologically active natural products and drugs.</p>
1 aMondal, S.1 aYetra, S., R.1 aMukherjee, S.1 aBiju, A., T.  uhttps://library.ncl.res.in/content/nhc-catalyzed-generation-%CE%B1%CE%B2-unsaturated-acylazoliums-enantioselective-synthesis-heterocycles01994nas a2200253   4500008004100000022001400041245009900055210006900154260000800223300001200231490000700243520119300250653002401443653002401467653001701491653001601508653001401524100001401538700001401552700001701566700001801583700001501601856012401616       2020                        eng d  a0959-333000aCarbon quantum dots functionalized agarose gel matrix for in solution detection of nonylphenol0 aCarbon quantum dots functionalized agarose gel matrix for in sol  cJAN  a322-3280 v413 a<p>Nonylphenol, an endocrine disrupter, is widely released to the aquatic environment, which is accumulative and extremely toxic to aquatic organisms. Here, we report a simple and cost-effective large-scale green synthesis of water-soluble highly fluorescent carbon quantum dots (CQDs) from marine biowaste (offshore washed algae) which gets quenched strongly in the presence of nonylphenol. These CQDs were around 20-40 nm in size and exhibit fluorescence constantly at 360 nm. The XRD profile depicted the interlayer spacing in the particle as 0.284 nm with a humped peak around 14 degrees showing the amorphous nature of the CQDs. FTIR spectra showed the stretching vibration of the hydroxyl groups (OH), asymmetric and symmetric stretching vibrations of the carboxylate anions (COO-). The fluorescence quantum yield of the CQDs is up to 68% and nonyl phenol detection limit is less than 0.1 µM. Furthermore, the CQDs were found to be stable at a wide pH range which makes it a suitable nonylphenol sensor for a variety of environmental samples. We functionalized these CQDs on an agarose gel matrix to develop a convenient sensor for the rapid detection of nonylphenol.</p>
10aCarbon quantum dots10aendocrine disrupter10amarine algae10anonylphenol10apollutant1 aSingh, S.1 aNigam, P.1 aPednekar, A.1 aMukherjee, S.1 aMishra, A.  uhttps://library.ncl.res.in/content/carbon-quantum-dots-functionalized-agarose-gel-matrix-solution-detection-nonylphenol