Zobrazeno 1 - 10
of 21
pro vyhledávání: '"S. K. Mahesh"'
Autor:
S. K. Mahesh, P. Prabhakar Rao
Publikováno v:
Journal of Materials Science: Materials in Electronics. 32:23724-23727
Autor:
P. Prabhakar Rao, S. K. Mahesh
Publikováno v:
Journal of Materials Science: Materials in Electronics. 31:20847-20857
Dependence on charge transfer (CT) band and emission properties are investigated in Eu3+ doped quaternary pyrochlore-type oxides,Ca(RE)1−x(M)NbO7 (RE = Y, Gd; M = Ti, Sn) by varying the crystal chemistry of A- and B-cations. The CT band is shallow
Publikováno v:
The Journal of Organic Chemistry. 84:7815-7828
BF3·Et2O-mediated synthesis of multisubstituted indenes from alkyl aryl-1,3-dienes and aromatic aldehydes through tandem addition/4π-electrocyclization/benzylation via tetrahydroindeno-oxepine/quinone methide followed by an intramolecular 1,6-hydri
Publikováno v:
Optical Materials. 52:134-143
Eu3+ doped Ln3TaO7 (Ln = La, Gd, Y, Lu) red phosphors were prepared using a solid state route. The Ln3+ substitution induces variation of crystalline structure from a defect fluorite to weberite types with increased ordering of the cations from Lu to
Autor:
Satya Narayana Dayaka, Mithun Chakraborty, S. Phani Babu Vemulapalli, Gangarajula Sudhakar, B Sridhara Shanmukha Rao, Vilas D. Kadam, S. K. Mahesh
Publikováno v:
Organic letters. 20(16)
Rapid synthesis of the pentacyclic core structure of macroline-type indole alkaloids, and its application in the total synthesis of macroline and alstomicine is described. The core structure was accomplished in a highly stereocontrolled manner via tw
Publikováno v:
Journal of Materials Science: Materials in Electronics. 26:5743-5747
Novel red phosphor materials Gd2−x−y GaTaO7:xEu3+,yBi3+ were prepared using a high temperature solid state reaction route. Crystalline structure, morphology, absorbance and photoluminescence properties were studied using powder X-ray diffractomet
Publikováno v:
Organic letters. 19(17)
The development of aryl vinyl/divinyl donor–acceptor cyclopropanes (DACs) as novel Nazarov cyclization (NC) precursors is described. The 1,3-zwitterion, generated from DACs embedded in the divinyl framework, acts as a pentadienyl cation, a requisit
Publikováno v:
Journal of Materials Science: Materials in Electronics. 25:2387-2393
A series of intense red emitting phosphors, Ca0.8-xZrxMo1-xSixO4:0.2Eu 3? (x = 0.025, 0.05, 0.075, 0.1) that could be effectively excited in the UV region was prepared by conventional high temperature solid state reac- tion route. Structural, morphol
Publikováno v:
Phys. Chem. Chem. Phys.. 16:17108-17115
New red phosphor materials of general formula Gd3-xMO7:xEu(3+) (M = Nb, Sb, and Ta) were prepared using a high temperature solid state reaction route. Detailed structural studies using XRD, FT-IR and Raman spectroscopic techniques showed that niobate
Publikováno v:
Inorganic Chemistry. 52:13304-13313
Stannate-based pyrochlore-type red phosphors CaGd(1-x)SnNbO7:xEu(3+), Ca(1-y)Sr(y)Gd(1-x)SnNbO7:xEu(3+), and Ca(0.8-x)Sr0.2GdSnNbO(7+δ): xEu(3+) were prepared via conventional solid-state method. Influence of cation substitution and activator site c