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MPD掺杂的共聚合物薄膜的发光特性 被引量:1
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作者 孔祥贵 胡斌 +3 位作者 安利民 王新 单桂晔 刘星元 《发光学报》 EI CAS CSCD 北大核心 2002年第6期585-589,共5页
研究了由噻吩乙烯发色团单元和惰性寡甲撑单元组成的交替嵌段聚合物与小分子量染料[2 methyl 6 [(2,3,6,7 tetrahydro 1H,5H benxo[ij]quinolixin q yl)ethenyl] 4H pylidene] 丙烷二腈(MPD)共混物薄膜的光致发光。这种共混物在645nm处... 研究了由噻吩乙烯发色团单元和惰性寡甲撑单元组成的交替嵌段聚合物与小分子量染料[2 methyl 6 [(2,3,6,7 tetrahydro 1H,5H benxo[ij]quinolixin q yl)ethenyl] 4H pylidene] 丙烷二腈(MPD)共混物薄膜的光致发光。这种共混物在645nm处产生增强的红光发射。发射增强的部分原因是来源于晶化共聚合物与染料之间有效的能量传递。 展开更多
关键词 MPD掺杂 共聚合物薄膜 发光特性 聚物 光致发光 能量传递
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Molecular Imprinted Membrane with High Flux by Surface Photo-grafting Copolymerization 被引量:2
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作者 李爽 张凤宝 +1 位作者 张国亮 王燕 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第2期184-190,共7页
Molecular imprinted polymer membranes (MIM) combine the merits of molecular imprint and membrane technology. In this work, a very thin of imprinted polymer that can specifically and selectively absorb the basic templa... Molecular imprinted polymer membranes (MIM) combine the merits of molecular imprint and membrane technology. In this work, a very thin of imprinted polymer that can specifically and selectively absorb the basic template (adenine) was grafted on the surface of polyvinylidene fluoride membrane by photo-grafting copolymerization. Because the molecular imprinted polymer is grafted on the surface of the matrix membrane without blocking the membrane pores, the resultant MIMs have high flux as microfiltration membrane (0.26 mol·m^-2·h^-1 of template and flux for distilled water was 3.6 ml·mim^-1·cm^-2 at 0.8 MPa). Moreover, the MIMs can absorb/desorb template molecules rapidly. Usually, it only takes several minutes for MIMs to absorb more than 75% of the template (adenine) in aqueous solution. And the influences of the type and amount of the functional monomers, the amount of the cross-linker on the absorption capability are discussed to determine the optimal preparation conditions。 展开更多
关键词 molecular imprinted membrane photo-grafting copolymerization ADENINE
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Carbon nanotubes assisting interchain charge transport in semiconducting polymer thin films towards much improved charge carrier mobility 被引量:2
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作者 Zhe Zheng Zhenjie Ni +4 位作者 Xiaotao Zhang Yonggang Zhen Huanli Dong Jin Zhang Wenping Hu 《Science China Materials》 SCIE EI CSCD 2019年第6期813-822,共10页
Conjugated polymers attracted much attention in the past few decades due to their wide applications in various optoelectronic devices and circuits. The charge transport process in conjugated polymers mainly occurs in ... Conjugated polymers attracted much attention in the past few decades due to their wide applications in various optoelectronic devices and circuits. The charge transport process in conjugated polymers mainly occurs in the intrachain and interchain parts, where the interchain charge transport is generally slower than intrachain transport and may slow down the whole charge transport properties. Aiming at this issue, herein we employ semiconducting single-walled carbon nanotubes(s-SWNTs) as efficient charge-transporting jointing channels between conjugated polymer chains for improving the charge transport performance. Taking the typical conjugated polymer, ploy-N-alkyl-diketopyrrolopyrrole-dithienylthieno[3,2-b]thiophene(PDPP-TT) as an example, polymer thin film transistors(PTFTs) based on the optimized blended films of PDPP-TT/s-SWNTs exhibit an obviously increasing device performance compared with the devices based on pure PDPP-TT films, with the hole and electron mobility increased from 2.32 to 12.32 cm^2 V^-1 s^-1 and from 2.02 to 5.77 cm^2 V^-1 s^-1, respectively. This result suggests the importance of forming continuous conducting channels in conjugated polymer thin films, which can also be extended to other polymeric electronic and optoelectronic devices to promote their potential applications in large-area, low-cost and high performance polymeric electronic devices and circuits. 展开更多
关键词 conjugated polymer s-SWNTs connected conducting channel carrier mobility
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