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Polyhedral oligosilsesquioxane containing poly(methyl methacrylate) perylenebisimide microspheres with high solid state emission
Polyhedral-oligosilsesquioxane containing poly(methyl methacrylate) perylenebisimide microspheres with high solid state emission
http://www.polymer.cn//ss/renxiangkui/publicationsshow_9954.html |
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Molecular Origin of the Shape Memory Properties of Heat-shrink Crosslinked Polymers as Revealed by Solid-state NMR
Understanding the shape memory properties of heat-shrink polymers (HSPs)
at the molecular level is crucial for the design and synthesis of advanced HSP
materials. Herein, we employed a
variety of in situ variable-temperature (VT) solid-state nuclear magnetic
resonance (NMR) techniques, in combination with other methods, to investigate
the evolution of the individual components of a poly(ethyl...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9768.html |
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(ECS Solid State Lett.) Microwave Assisted Formation of Magnetic Core-Shell Carbon Nanostructure
This letter describes a facile high temperature microwave assisted process to form the magnetic core-shell carbon nanostructure from polyaniline (PANI)-magnetite (Fe3O4) nanocomposites. The amorphous combined with graphitized carbon shell is observed by the transmission electron microscopy (TEM). The crystalline metallic iron, cementite, Fe3O4 and iron oxide (Fe2O3) are observed in the magnetic ...
http://www.polymer.cn//ss/guhongbo/publicationsshow_9635.html |
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Synthesis, Solid-State Structures, and Molecular Recognition of Chiral Molecular Tweezer and Related Structures Based on a Rigid Bis-Naphthalene Cleft.
The rigid and nonchiral bis-naphthalene cleft was used for the first time as a scaffold to build a chiral molecular
tweezer. The molecular tweezer and its related compounds have been synthesized and carefully characterized by X-ray crystallography and NMR spectroscopy. Their solid-state structures and molecular recognition properties have also been studied.
http://www.polymer.cn//ss/hezhenfeng/publicationsshow_9190.html |
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Probing the Two-Stage Transition upon Crossing the Glass Transition of Polystyrene by Solid-State NMR
A two-stage transition upon crossing the glass transition of polystyrene with increasing temperature was precisely determined and
interpreted by using solid-state nuclear magnetic resonance (SSNMR), 1H-1H dipolar couplings based Double
Quantum-Filtered (DQF) and dipolar filter (DF) experiment and 13C
Chemical Shift Anisotropy (CSA) based centerband-only detection of exchange (CODEX) experiment ar...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9032.html |
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Phase cycling schemes for finite-pulse-RFDR MAS solid state NMR experiments
The finite-pulse radio frequency driven dipolar recoupling (fp-RFDR) pulse sequence is used in 2D homonuclear chemical shift correlation experiments under magic angle spinning (MAS). A recent study demonstrated the advantages of using a short phase cycle, XY4, and its super-cycle, XY414, for the fp-RFDR pulse sequence employed in 2D 1H/1H single-quantum/single-quantum correlation experiments under...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9030.html |
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Heterogeneous Structure and Miscibility of Phenylboronic Acid-Rich Chitosan Nanoparticles as Revealed by Advanced Solid-State NMR
By using advanced solid-state NMR techniques, the heterogeneous structure and inter-polymer miscibility of chitosan-poly (N-3-acrylamidophenyl-boronic acid) nanoparticles
(CS-PAPBA NPs) were investigated. The 13C CPMAS experiments indicate the conformational
change of chitosan when incorporated with phenyl boronic acid. Two-dimensional (2D) 13C-1H HETCOR experiments further demonstrate that a port...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9028.html |
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Skin thermal stimulation on touching cool fabric from the transient stage to steady-state stage
This study investigated the whole process of skin thermal stimulation upon contacting a cool fabric using a two-layer fabric piece as an example. This process of heat transfer in our model, considering the influence of both external environmental conditions and the skin structure, was analyzed in both transient and steady-state stages sequentially. Three predictive parameters, the heat flux peak q...
http://www.polymer.cn//ss/qulijun/publicationsshow_8906.html |
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Effects of layering sequence on thermal response of multilayer fibrous materials: Unsteady-state cases
Heat transfer between multilayer fibrous materials under unsteady-state conditions is regarded as an intricate and unpredictable process, and the system thermal response with different layer stacking sequences is investigated in this paper. All six possible sequences for three-layer fabrics are measured by an apparatus set up in our lab and simulated by the finite element method, taking account of...
http://www.polymer.cn//ss/qulijun/publicationsshow_8899.html |
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Effects of layering sequence on thermal response of multilayer fibrous materials: Unsteady-state cases
Heat transfer between multilayer fibrous materials under unsteady-state conditions is regarded as an intricate and unpredictable process, and the system thermal response with different layer stacking sequences is investigated in this paper. All six possible sequences for three-layer fabrics are measured by an apparatus set up in our lab and simulated by the finite element method, taking account of...
http://www.polymer.cn//ss/qulijun/publicationsshow_8898.html |
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