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107 results on '"Shengyan Yin"'

102. Polyoxometalate-based vesicle and its honeycomb architectures on solid surfaces

Author

Shengyan Yin, Lixin Wu, Weifeng Bu, Haolong Li, and Hang Sun

Subjects
chemistry.chemical_classification, Stereochemistry, Vesicle, Cationic polymerization, General Chemistry, Microporous material, Biochemistry, Catalysis, Supramolecular assembly, Colloid, Honeycomb structure, Colloid and Surface Chemistry, chemistry, Chemical engineering, Polyoxometalate, Counterion
Abstract

The introduction of cationic surfactant DODA as counterions of [Eu(H2O)2SiW11O39]5- can form a mesoscopic supramolecular assembly of (DODA)4H[Eu(H2O)2SiW11O39], which aggregates into vesicles in chloroform. This POM-based vesicle can be further transferred into three-dimensional microporous architectures under moist air. The present methodology shows that, by combining inorganic chemistry and colloidal surface chemistry, a sequential self-assembling approach based on a series of linkable preorganized building blocks allows access to the fabrication of technological applicably POM-based microsized patterns, alternated with the soft lithographic method.

Published
2005

105. Porous Graphene: Functional Free-Standing Graphene Honeycomb Films (Adv. Funct. Mater. 23/2013)

Author

Xiaodong Chen, Moshe Herzberg, Shengyan Yin, Yanyan Zhang, Hongyu Chen, Lei Liu, Yulia Goldovsky, Darren Delai Sun, Hang Sun, Ariel Kushmaro, Fanben Meng, and Xuebo Cao

Subjects
Photocurrent, Materials science, Graphene, Graphene foam, Nanotechnology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, Biomaterials, law, Electrochemistry, Honeycomb, Bilayer graphene, Porous medium, Graphene nanoribbons, Graphene oxide paper
Published
2013

106. Hierarchical protonated titanate nanostructures for lithium-ion batteries

Author

Chang Ming Li, Yuxin Tang, Shengyan Yin, Zhili Dong, Hua Zhang, Zhiyuan Zeng, Yanyan Zhang, Zhong Chen, and Xiaodong Chen

Subjects
Ions, Titanium, Electrode material, Nanostructure, Materials science, Inorganic chemistry, chemistry.chemical_element, Protonation, Electrochemical Techniques, Lithium, Titanate, Nanostructures, Ion, Anode, Electric Power Supplies, chemistry, Chemical engineering, General Materials Science, Protons
Abstract

3D protonated titanate nanoflowers synthesized by an organic-free and cost-effective facile method exhibit a high reversible capacity, excellent cycling performance, and a remarkable rate capability when they worked as anode electrode materials for lithium-ion batteries.

Published
2011

107. Tuning Mesophase of Ammonium Amphiphile-Encapsulated Polyoxometalate Complexes through Changing Component Structure.

Author

Wen Li, Shengyan Yin, Jinfeng Wang, and Lixin Wu

Subjects
*METALLIC oxides, *POLYOXOMETALATES, *THERMAL properties, *OPTICS
Abstract

A series of biphenyl-containing ammonium amphiphiles with two alkyl chains, N,N-di[10-[4-(4′-alkyloxybiphenyl)oxy]decyl]- N,N-dimethylammonium bromide (C nBphC 10N, n= 6, 8, 10, 12), were designed and synthesized to cap the polyoxometalates (PMs), forming corresponding amphiphile-encapsulated complexes (PM-m/C nBphC 10N). To understand the effect of organic and inorganic components on the mesomorphic behavior of hybrid materials, we examined the thermal properties of these complexes and their organic components as the comparison using differential scanning calorimetry, polarized optical microscopy, and X-ray diffraction. The mesophase type of PM-1/C nBphC 10N is independent of the variety of tail length of amphiphiles. However, different smectic phases, such as smectic A, smectic C, smectic B, and crystalline smectic phases, can be obtained by appropriate selection of the polyoxometalates (PM-2, PM-3, and PM-4) with different shape and surface charge density. The present results provide a direct correlation between liquid crystalline properties of the hybrid complex and the feature of inorganic PMs. [ABSTRACT FROM AUTHOR]

Published
2008
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