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Vibrational Activity Change of Self-Assembled Monolayers upon Chemical Attachment and Nanoscale Block Revealed by Surface Enhanced Raman Spectroscopy
This paper presents an experimental framework aiming at identifying the origin of weak ambiguous vibrational modes in surface enhanced Raman scattering (SERS), i.e. from the high-order effect or symmetry change using 1,4-benzenedithiol (BDT) as probing molecules. The experimental result indicated the appearance of the weak ambiguous vibrational modes was caused by symmetry change rather th...
http://www.polymer.cnt//ss/cenglxl/publicationsshow_7470.html |
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Template-controlled fabrication of hierarchical porous Zn-Al composites with tunable micro/nanostructures and chemical compositions
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http://www.polymer.cnt//ss/fchem/publicationsshow_7140.html |
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132. Preparation and Characterization of High-Melt-Strength Polylactide with Long-Chain Branched Structure through γ-Radiation-Induced Chemical Reactions
摘要：采用一种制备高熔体强度聚乳酸材料简易方法，通过对混合了一种三官能基团单体，三羟甲氧基丙烷三丙烯酸酯（TMPTA）的线性聚乳酸进行伽马射线辐照，引发自由基反应，在体系中引入长链支化结构。配备多角度激光光散射检测仪的体积排除色谱测试结果表明所制备的长链支化聚乳酸的分子量和长链支化度随着加入TMPTA用量增加而提高。黏度，储能模量，损耗角，Cole-Cole作图，和松弛时间谱等流变学特性说明长链支化聚乳酸的熔体强度...
http://www.polymer.cnt//ss/zhigangwang/publicationsshow_6796.html |
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Mg2+/Ca2+ binding to DNA bases: a quantum chemical method and ABEEMrp/MM fluctuating charge model study
The interactions of Mg2+ and Ca2+ binding to adenine, cytosine, guanine, and thymine at various binding sites were studied by a high-level quantum chemical method and ABEEMrp/MM fluctuating charge model. The geometries and binding energies of M2+-bases complexes were determined at CCSD(T)/6-311++G(2d,2p)//MP2/6-311++G(2d,2p) level of theory, with the basis set&nb...
http://www.polymer.cnt//ss/cyyu/publicationsshow_6723.html |
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Mechano-chemical preparation and application of mulberry-like CACO 3SIO2 composite particles in superhydrophobic films
略
http://www.polymer.cnt//ss/caizhiqi/publicationsshow_5462.html |
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Two-dimensional lattice Monte Carlo simulation of the compatibility of A/B/functionalized A ternary polymer mixtures coupled with chemical reaction
Compatibility of A/B and functionalized A ternary polymer mixtures was studied by Monte Carlo simulation in a two-dimensional lattice. Polymer A was a nonreactive polymer, whereas polymer B was a reactive polymer and immiscible with polymer A. Functionalized polymer A could react with the end group of polymer B, leading to the formation of block copolymers. Simulation results showed the phase do...
http://www.polymer.cnt//ss/zhuyutian/publicationsshow_5306.html |
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How Well Can One Separate Copolymers According to Both Chemical Compositions and Sequence Distributions?
Partitioning of statistical AB type copolymer chains into a slit pore was studied with Monte Carlo simulations on a simple cubic lattice with self-avoiding walk models. Only one of the monomer types, B monomers, has attractive interaction with the surface, while the A monomers have no interaction with the surface. The critical adsorption point (CAP) of the copolymer at a given chemical compositi...
http://www.polymer.cnt//ss/zhuyutian/publicationsshow_5294.html |
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Preparation of Fluorescent Conjugated Polymer Films with Different Emission Colors: Investigation into the Influences of Chemical Structure and Morphology
A series of PPV fi lms with different fl uorescent emission colors are prepared using a facile approach. Modifi ed from the conventional Wessling route, the labile sulfonium groups in the polymer precursor (pre-PPV) are partly substituted to various degrees by relatively stable methoxy groups, followed by a regular thermal elimination step to obtain PPV. Different chemical structures among these...
http://www.polymer.cnt//ss/fanlijuan/publicationsshow_5090.html |
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[Chemical Reviews] Surface Chemoselective Phototransformation of CH Bonds on Organic Polymeric Materials and Related High-Tech Applications
DOI 10.1021/cr300246p
http://pubs.acs.org/doi/abs/10.1021/cr300246p
This review presents a broad discussion on the photochemical activation reaction of C-H bonds at organic polymeric surfaces, thus providing an organized and detailed overview of the state of the art. The importance of polymer surface/interface properties has been recognized in modern science and technologies, including but not lim...
http://www.polymer.cnt//ss/yangpeng/publicationsshow_4625.html |
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Well-de?ned polypyrrole nano?akes via chemical oxidative polymerization in the presence of sodium alkane sulfonate
The conductive polymers with unique nanostructures have attracted intense interest due to their potential
application. Here the well-de?ned polypyrrole nano?akes (PPy/AS) were fabricated via the facile chemical
oxidative polymerization of pyrrole with high feeding ratio of sodiumalkane sulfonate (SAS). SAS was used as
the surfactant (template) and dopant for the nanostructured conductive polyme...
http://www.polymer.cnt//ss/holymer/publicationsshow_3166.html |
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