A rapid, seedless, template-free, and inexpensive synthesis of pure V^IV AM-6 [AM-6-(Y)] is reported that uses V₂O₅ as V source and that, in the case of V^IVO₃^2- quantum wire, the nature of the intense electronic absorption in the 3.0-5.5 eV region is V⁴⁺to O^2- CT or metal-to-ligand CT (MLCT) as opposed to the previous assignments and in contrast to TiO₃^2- quantum wire.AM-6-(Y) was characterized by (TGA), Raman and diffuse reflectance spectra and BET surface areas were also measured.The degree of cation exchange of various cations (K⁺, Na⁺, Ba²⁺, Sr²⁺, Ca²⁺, Mg²⁺, Pb²⁺, Cd²⁺, and Zn²⁺) into AM-6-(Y) was significantly higher than for non-pure AM-6 analogs.

2009-01-01·Dalton Transactions2区 · 化学

AM-6: a microporous one-dimensional ferromagnet

2区 · 化学

Article

作者: Rachel M. Yeates ; Abbie McLaughlin ; Morag J. Murdoch ; Alessandro Damin ; Peter D. Southon ; Silvia Bordiga ; Francesca Bonino ; Russell Francis Howe

The vanadosilicate zeolite AM-6 is shown by a combination of spectroscopic techniques (UV-vis, Raman, XPS, XAS and EPR) to contain linear chains of alternating V=O and V-O bonds. The V(IV) ions in these chains are ferromagnetically coupled, and an excellent fit a to the susceptibility data with a one-dimensional Heisenberg model is obtained with J = 0.66(1) cm(-1). AM-6 is thus the first reported example of a microporous material incorporating one-dimensional ferromagnetic chains.

1994-12-01·Journal of General Virology3区 · 医学

Virus neutralization reveals antigenic variation among feline immunodeficiency virus isolates

3区 · 医学

Article

作者: Rigby, Mark ; Neil, James C. ; Jarrett, Oswald ; Siebelink, Kees ; Osborne, Robert

By using a focus reduction assay in CrFK feline fibroblast cells, virus neutralizing antibodies (VNA) to feline immunodeficiency virus (FIV) were demonstrated in cats that had been naturally or experimentally infected with FIV. The antigenic relatedness of four strains of FIV, divergent in nucleotide sequence within the env gene, was investigated by neutralization following adaptation of each virus for growth in CrFK cells. Two of the viruses were from The Netherlands (FIV/AM-4 and AM-6), one was from the U.K. (FIV/GL-8) and one was from the U.S.A. (FIV/PET). Reaction of the viruses in the neutralization assay with cat antibodies to homologous or heterologous strains indicated that while there was a degree of cross-reactivity between all four, there were consistent differences suggesting the existence of FIV neutralization subtypes. In particular, FIV/PET and FIV/AM-6 were closely related but FIV/PET and FIV/GL-8 were clearly distinct. VNA from naturally infected cats in the field showed a pattern of reactivity against FIV/PET and FIV/GL-8 that confirmed the antigenic diversity of FIV.

100 项与 AM-06(Yitu Shengke) 相关的药物交易

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