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有机金属聚合物/多酸纳米杂化LB膜的制备与光电性质研究 总被引:1,自引:0,他引:1
以含有共轭大π键的有机金属聚合物(OMP)作有机组分, 以Keggin结构和Dawson结构钨(钼)磷杂多酸作无机组分, 以十八胺为辅助成膜剂, 用LB技术制备了3种新型有机金属聚合物/十八铵/杂多阴离子OMP/ODA/HPA (HPA=PMo12, PW12, P2Mo18)杂化LB膜. 用π-A曲线﹑UV-vis吸收光谱﹑荧光光谱﹑原子力显微镜(AFM)﹑扫描隧道显微镜(STM)和表面光电压谱(SPS)对标题LB膜的成膜性能及光电性质进行了研究, 结果表明标题杂化LB膜的崩溃压为26.8 mN/m, 在可见光区有较强的光电压响应, 并有好的发光性质. 当电压为±8.0 V时, 隧道电流是-0.1~-2.3 nA. 相似文献
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四边简支矩形板,如图1所示。在坐标轴x上有一长为c_2-c_1=2ea的穿透裂纹,在x方向和y方向分别受压力N_x和N_y作用,板并经受横向振动。作为处理问题的一种方法,可以把长为b_1+6_2宽为a的一块板看成沿x轴相互支持的两块板。假定板 相似文献
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合成了9-丁基咔唑基聚炔汞聚合物[—HgC≡CRC≡C—]n及其二聚体[MeHgC≡CRC≡CHgMe]和金的二聚体[(PPh3)AuC≡CRC≡CAu(PPh3)](R=9-丁基咔唑基). 用 1H NMR, 13C NMR, 31P NMR, FTIR, FAB-MS, UV-Vis, Fluorescence及Phosphorescence 光谱对其进行了表征. 结果表明, 体系中金和汞产生的重原子效应可以促进单线激发态S1与三线激发态T1的系间跃迁, 使标题化合物产生有机三线态发光. 相似文献
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Asymmetric epoxidation of N-enoylsultams (1, 3-15) incorporating a variety of chiral sultams as the chiral induction elements with UHP/TFAA has been studied. Both diastereomeric isomers of epoxides (2, 16-28) were obtained in high yield and moderate to high optical purity. 相似文献
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A new luminescent and thermally stable platinum(Ⅱ) polyyne polymer trans-[-Pt(PBu_3)_2C=CArC=C-]_n(P1) containing the 2,7-fluorene chromophoric spacer substituted by pendant carbazolyl group via long alkyl bridges. The regiochemical structures of these compounds were studied by various spectroscopic analyses.We report the photophysical properties of this group 10 polymetallayne and a comparison was made to its binuclear model complex trans-[Pt(Ph)(PEt_3)_2C≡CArC≡CPt(Ph)(PEt_3)_2](M1) as well as to those ... 相似文献
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用Hagihara脱氢卤代法合成了三种新的9,9-二(十六烷基)芴基二聚炔铂(d8)、金和汞(d10)化合物反式- [Pt(Ph)(PEt3)2C≡CRC≡CPt(Ph)(PEt3)2, [(PPh3)AuC≡CRC≡CAu(PPh3)]和[MeHgC≡CRC≡CHgMe] [R=9,9-二(十六烷基)芴基]. 用1H NMR, 13C NMR, 31P NMR, FT-IR, FAB-MS, UV-Vis, 荧光和磷光光谱对其进行了表征. 结果表明, 体系中的铂、金和汞产生的重原子效应可以有效地促进单线激发态S1与三线激发态T1的系间跃迁, 使标题化合物产生有机三线态发光. 相似文献
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Soluble platinum(Ⅱ)polyyne polymers trans-{Pt-[P(C_4H_8N)_3]_2(C≡C)_2R(C≡C)_(2-)}_n and trans-{Pt-[P(C_4-H_3O)_3]_2(C≡C)_2R(C≡C)_(2-)}_n(R=9,9-dihexylfluorene-2,7-diyl)have been prepared in good yields by CuI-catalyzedpolymerization involving the dehydrohalogenating coupling of trans-{PtCl_2[P(C_4H_8N)_3]_2} and trans-{PtCl_2[P-(C_4H_3O)_3]_2} with H(C≡C)_2R(C≡C)_2H,respectively.We report the optical spectroscopy of these polyplatinaynes.The influence of the heavy metal atom in these metal alkynyl systems on the intersystem crossing rate and the spa-tial extent of lowest singlet and triplet excitons was systematically characterized.Our investigations indicate that theorganic triplet emissions can be harvested by the heavy-atom effect which enables efficient intersystem crossingfrom the S_1 singlet excited state to the T_1 triplet excited state. 相似文献
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