Browsing by Author "Valenzuela, María Luisa"
Now showing items 1-17 of 17
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(2010)Reaction of Cu(BF4)2 salt with the polymer [NP(OC6H4C(O)C–OC6H5)2]n (1) in THF affords three new polymers gels containing varied copper (II) ions contents, (2), (3), and (4). The nature of the copper (II) ions in the ...
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(Elsevier, 2021)The insight into the mechanism of the unprecedented formation of pure anatase TiO2 from the macromolecular (Chitosan)center dot(TiOSO4)(n) precursor has been investigated using micro Raman spectroscopy, Scanning Electron ...
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(2002)The compound ([CpFe(dppe)]2[μ-SCH2CH2S-S,S′]) (PF6)2 ([1][PF6]2) has been synthesized and its magnetic properties have been investigated by susceptometer quantum interface device (SQUID) measurements in the temperature ...
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(ACS publications, 2014)Gold and silver complexes containing the monophosphane 1-PPh2-2-Me-l,2-C2B10H10 with different coordination numbers (2, 3) have been synthesized: [M(7,8-(PPh2)2-C2B9H10)(1-PPh2-2-Me- C2B10H10)] (M = Ag, Au) and ...
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(Frontiers Media, 2021)Peaches and nectarines [Prunus persica (L.) Batsch] are among the most exported fresh fruit from Chile to the Northern Hemisphere. Fruit acceptance by final consumers is defined by quality parameters such as the size, ...
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(AMER CHEMICAL SOC, 2010-09-04)We present a method for the preparation and deposition of metallic microstructures and nanostructures deposited on silicon and silica surfaces by pyrolysis in air at 800 C of the corresponding metallophosphazene (cyclic ...
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(SPRINGER, 2006-09)Pyrolysis in air of the carborane-substituted polyphosphazene, {[NP({OCH2}(2)C2B10H10)](0.5) [NP({OCH2}(2)C2B9H10 center dot NBu4)](0.5)} (n) affords BPO4 crystals of varied sizes in the micro and nano regime.The materials ...
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(SPRINGER, 2006-10)The reaction under very mild conditions of the polyspirophosphazene copolymer with pendant diphenylphosphine groups {[NP(O2C12H8)](0.85)[NP(OC6H4PPh2)(2)](0.15)}(n) (I) (O2C12H8= 2,2'-dioxybiphenyl) with [Au(THT)Cl] (THT ...
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Organometallic derivatives of polyphosphazenes as precursors for metallic nanostructured materials (SPRINGER, 2006-12)Co-polyphosphazenes containing anchored organometallic fragments are useful precursors for nanostructured metallic materials. Pyrolysis in air at 800 degrees yields metallic nanoparticles of the type, M degrees/M (x) O (y) ...
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(SPRINGER, 2006-06)Pyrolysis in air at 800 degrees C of [{NP(OC12H10)}(0.6){NP(OC6H4PPh2 center dot(pi-CH3C5H4)-Mn(CO)(2))(2)}(0.4)] (n) (1) in the solid state affords product 2 containing nanoclusters of Mn2P2O7 with sizes ranging from 50 ...
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(AMER CHEMICAL SOC, 2006-01-10)The pyridine-containing copolymers {NP(O2C12H8)](x)[NP(OC5H4N)(2)](1-X)}(n), with X = 0.7 (3a) and X = 0.8 (3b), and their respective organometallic derivatives of approximate formula {[NP(O2C12H8)](x)[NP-(OC5H4N circle ...
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(Sociedad Chilena de Química, 2015)The macromolecular complexes Chitosan center dot(PtCl2)(n) and PSP-co-4-PVP center dot(PtCl2)(n), were prepared from the respective polymer and PtCl2 in metal: polymer molar ratios 1: 1 and 1: 5. Pyrolisis of the macromolecular ...
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(Springer, 2008)A new silicated cyclotriphosphazene N3P3(O2C12H8)(2)(OC6H4Si(CH3)(3))(OC6H4Br) 1 has been synthesized and characterized. The solid state pyrolysis of 1 in air gives a nanostructured SiP2O7 3D network. The morphology of the ...
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Synthesis and pyrolysis of silicon and tin containing poly(2,2 '-dioxy-1,1 '-biphenoxy-phosphazenes) (PERGAMON-ELSEVIER SCIENCE LTD, 2008-03)The polyphosphazene {[NP(O2Cl2H8)](0.5)[NP(OC6H4Br)(2)](0.5)}(n) (1) [(O2C12H8) = 2,2'-dioxy-1,1'-biphenyl] that, as an strictly alternating copolymer, can be considered nearly as the homopolymer [NP(O2C12H8)NP(OC6H4Br)(2)](n), ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2006-01-02)The phosphazene copolymers {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4-L)](0.5)}(n) [L=CN (1), PPh2, (2)] and {[NP(O2C12H8)](0.6)[NP(O-C6H4-CO2Pr")(O-C6H4-L)](0.4)}(n) (3) have been synthesized by sequential substitution ...
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(2006)The phosphazene copolymers {[NP(O2C12H 8)]0.5[NP(O-C6H4-CO 2Prn)(O-C6H4-L)]0.5} n [L = CN (1), PPh2 (2)] and {[NP(O2C 12H8)]0.6[NP(O-C6H 4-CO2Prn)(O-C5H4N)] 0.4}n (3) have been synthesized by sequential substitution from ...
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(JOURNAL OF CLUSTER SCIENCE, 2005-12)Thermal treatment in air of the organometallic polymer{[NP(O2C12H8)]0.8[NP(OC6H4CH2CN • [Cr(CO)5]0.13)2]0.18}n (1) results in the formation of nanometer-size metal oxide particles. Cr particles in the 35–85 nm range, ...
