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1. Copolymer-Nanoparticles Mixture Confined in a Cylindrical Pore | |||
HAN Yu-Fang,PAN Jun-Xing,ZHANG Jin-Jun,WANG Bao-Feng,SUN Min-Na,GUO Yu-qi,WU Hai-shun | |||
Chemistry 14 April 2015 | |||
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Abstract:We have investigated the effect of nanoparticles(NPs) on diblock copolymer morphology under cylindrical confinement using Cell Dynamics Simulation. The nanoparticles are selective to the copolymer blocks, being repulsive to one block and attractive to the other. In comparison to the phase diagram in bulk of cylindrical confinement, more ordering structures are formed after adding nanoparticles. With the wetting strength and concentration of NPs increasing , the structures of block copolymers transform from disorder to order morphology. The effect of NPs wetting strength and concentration in different nanopore have been studied in detail. By developing a phase diagram to system morphology,we can meticulous know the phase morphology evolution. | |||
TO cite this article:HAN Yu-Fang,PAN Jun-Xing,ZHANG Jin-Jun, et al. Copolymer-Nanoparticles Mixture Confined in a Cylindrical Pore[OL].[14 April 2015] http://en.paper.edu.cn/en_releasepaper/content/4638529 |
2. Cylindrically confined assembly of diblock copolymer under oscillatory shear flow | |||
GUO Yuqi,ZHANG Jinjun,WANG Baofeng,WU Haishun,SUN Minna,PAN Junxing | |||
Chemistry 20 March 2015 | |||
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Abstract:Manipulating the self-assembly nanostructures with combined different control measures is emerging as a promising route for numerous applications to generate templates and scaffolds for the nanostructured materials. Here, the two different control measures are the cylindrical confinement and oscillatory shear flow. We have studied the phase behavior of diblock copolymer confined in nanopore under oscillatory shear by considering the different $D/L_0$ and different shears via Cell Dynamics Simulation. Under different $D/L_0$ the system occurs different morphology evolution and phase transition with the change of amplitude and frequency. Also, it exists novel morphologies that we expect to obtain. For each $D/L_0$, we have constructed phase diagram of different forms with the change of amplitude and frequency and analyzed carefully the cause why the phase transition occurs. We have found that although the morphologies is different in different $D/L_0$, the cause of the phase transition is roughly the same. These results can guide experimentalist an easy method to create the ordered, defect-free nanostructured materials through the combined control measures of the cylindrical confinement and oscillatory shear flow. | |||
TO cite this article:GUO Yuqi,ZHANG Jinjun,WANG Baofeng, et al. Cylindrically confined assembly of diblock copolymer under oscillatory shear flow[OL].[20 March 2015] http://en.paper.edu.cn/en_releasepaper/content/4634399 |
3. Hierarchical Luminescent Patterns of CdSe Nanoparticles Formed on the Alq3/PVA Film | |||
Hua Bai,Wu Guoping,Hao-Li Zhang | |||
Chemistry 18 March 2009 | |||
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Abstract:It is known that most organic fluorophores exhibit photo-bleaching properties. In contrast, a strong photoinduced fluorescence enhancement (PFE) behavior was observed on the thin film of CdSe nanoparticles (NPs). Taking advantage of the different photostabilities of organic fluorophore and CdSe NPs, several general methods for producing hierarchically patterning fluorescent films were proposed in this work. These methods were demonstrated on thin films consisting CdSe NPs on a green-emitting tris (8-hydroxyquinoline) Aluminum (Ⅲ) (Alq3)/ Poly (vinyl alcohol) (PVA) film. Meanwhile, the possible mechanism of PFE behavior of CdSe on the Alq3/PVA film was discussed. | |||
TO cite this article:Hua Bai,Wu Guoping,Hao-Li Zhang. Hierarchical Luminescent Patterns of CdSe Nanoparticles Formed on the Alq3/PVA Film[OL].[18 March 2009] http://en.paper.edu.cn/en_releasepaper/content/30421 |
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