01513nas a2200205   4500008004100000022001400041245013700055210006900192260011000261300001600371490000600387520065200393100001801045700002401063700002301087700001901110700002001129700002701149856013101176       2015                        eng d  a2046-206900aDinuclear salen cobalt complex incorporating Y(OTf)(3): enhanced enantioselectivity in the hydrolytic kinetic resolution of epoxides0 aDinuclear salen cobalt complex incorporating YOTf3 enhanced enan  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP  a82699-827030 v53 a<p>The activation of inactive Jacobsen's chiral salen Co(II) (salen = N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine) compound is attained by dinuclear chiral salen Co(III)-OTf complex formation with yttrium triflate. The yttrium metal not only displays a promoting effect on electron transfer, but also assists in forming two stereocentres of a Lewis acid complex with Co(III)-OTf. We found that the binuclear Co-complex significantly enhanced reactivity and enantioselectivity in the hydrolytic kinetic resolution of terminal epoxides compared to its analogous monomer and kinetic data are also consistent with these results.</p>1 aPatel, Deepak1 aKurrey, Ganesh, Ram1 aShinde, Sandip, S.1 aKumar, Pradeep1 aKim, Geon-Joong1 aThakur, Santosh, Singh  uhttps://library.ncl.res.in/content/dinuclear-salen-cobalt-complex-incorporating-yotf3-enhanced-enantioselectivity-hydrolytic-001626nas a2200193   4500008004100000245020200041210006900243260000800312300001000320490000800330520083100338100002101169700002101190700002701211700002201238700002301260700001801283856013101301       2018                        eng d00aSucrose capped gold nanoparticles as a plasmonic chemical sensor based on non-covalent interactions: application for selective detection of vitamins B-1 and B-6 in brown and white rice food samples0 aSucrose capped gold nanoparticles as a plasmonic chemical sensor  cJUN  a14-210 v2503 a<p>We report simple and selective method for detection of vitamins B-1 and B-6 in brown and white rice samples using localized surface plasmon resonance (LSPR) of sucrose capped gold nanoparticles (AuNPs) as a chemical sensor colorimetrically. Here, detection is based on the color change of AuNPs from pink to blue followed by a red shift of LSPR absorption band in UV-vis region with the addition of vitamins B-1 and B-6 into the NPs solution. A good linear range was observed in the range of 25-1000 ngmL(-1) with detection limit of 8 ngmL(-1) for B-1 and 50-1000 ngmL(-1) with detection limit of 15 ngmL(-1) for vitamins B-6. The employment of AuNPs for detection of B-1 and B-6 vitamins in rice food samples showed remarkable abilities in terms of the simplicity, low cost, stability, reproducibility and sensitivity.</p>1 aShrivas, Kamlesh1 aNirmalkar, Nidhi1 aThakur, Santosh, Singh1 aDeb, Manas, Kanti1 aShinde, Sandip, S.1 aShankar, Ravi  uhttps://library.ncl.res.in/content/sucrose-capped-gold-nanoparticles-plasmonic-chemical-sensor-based-non-covalent-interactions