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    • 5. 发明授权
    • Photoinduced charge-transfer materials for nonlinear optical applications
    • 用于非线性光学应用的光诱导电荷转移材料
    • US07125578B1
    • 2006-10-24
    • US09298297
    • 1999-04-23
    • Duncan W. McBranch
    • Duncan W. McBranch
    • B05D5/06
    • G02F1/3618B82Y20/00
    • A method using polyelectrolyte self-assembly for preparing multi-layered organic molecular materials having individual layers which exhibit ultrafast electron and/or energy transfer in a controlled direction occurring over the entire structure. Using a high molecular weight, water-soluble, anionic form of poly-phenylene vinylene, self-assembled films can be formed which show high photoluminescence quantum efficiency (QE). The highest emission QE is achieved using poly(propylene-imine) (PPI) dendrimers as cationic binders. Self-quenching of the luminescence is observed as the solid polymer film thickness is increased and can be reversed by inserting additional spacer layers of transparent polyelectrolytes between each active conjugated layer, such that the QE grows with thickness. A red shift of the luminescence is also observed as additional PPV layers are added. This effect persists as self-quenching is eliminated. Charge transfer superlattices can be formed by additionally incorporating C60 acceptor layers.
    • 一种使用聚电解质自组装制备具有单层的多层有机分子材料的方法,其在整个结构上发生在受控方向上表现出超快电子和/或能量传递。 使用高分子量的水溶性阴离子形式的聚亚苯基亚乙烯,可以形成显示高光致发光量子效率(QE)的自组装膜。 使用聚(丙烯 - 亚胺)(PPI)树枝状大分子作为阳离子粘合剂实现了最高的排放量QE。 观察到发光的自熄,因为固体聚合物膜厚度增加,并且可以通过在每个活性共轭层之间插入透明聚电解质的附加间隔层而使其反转,使得QE随厚度增长。 当添加额外的PPV层时,也观察到发光的红移。 由于消除了自熄,这种效果仍然存在。 电荷转移超晶格可以通过另外并入C 60受体层而形成。
    • 8. 发明授权
    • Femtosecond chirp-free transient absorption method and apparatus
    • 飞秒无啁啾的瞬时吸收方法和装置
    • US06191861B1
    • 2001-02-20
    • US09249726
    • 1999-02-13
    • Duncan W. McBranchVictor I. Klimov
    • Duncan W. McBranchVictor I. Klimov
    • G01N2159
    • G01N21/1717
    • A method and apparatus for femtosecond transient absorption comprising phase-sensitive detection, spectral scanning and simultaneous controlling of a translation stage to obtain TA spectra information having at least a sensitivity two orders of magnitude higher than that for single-shot methods, with direct, simultaneous compensation for chirp as the data is acquired. The present invention includes a amplified delay translation stage which generates a splittable frequency-doubled laser signal at a predetermined frequency f, a controllable means for synchronously modulating one of the laser signals at a repetition rate of f/2, applying the laser signals to a material to be sample, and acquiring data from the excited sample while simultaneously controlling the controllable means for synchronously modulating.
    • 一种用于飞秒瞬态吸收的方法和装置,包括相敏检测,光谱扫描和翻译级的同时控制,以获得具有至少比单次方法高两个数量级的灵敏度的TA光谱信息,其具有直接,同时 获取数据时对啁啾的补偿。 本发明包括放大的延迟转换级,其产生预定频率f的可分开的倍频激光信号,用于以f / 2的重复频率同步调制其中一个激光信号的可控装置,将激光信号施加到 要采样的材料,并且从同时控制用于同步调制的可控装置同时获取激发样品的数据。