Novel dendritic chromophores for electro-optics: Influence of binding mode and attachment flexibility on electro-optic behavior
Novel dendritic chromophores for electro-optics: Influence of binding mode and attachment flexibility on electro-optic behavior
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DOI：
10.1021/cm0517420
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发表时间：
2006
影响因子：
8.6
通讯作者：
P. Sullivan;A. Akelaitis;Sang Kyu Lee;Genette I. McGrew;Susan K. Lee;Dong Hoon Choi;L. Dalton
中科院分区：
文献类型：
--
作者：
P. Sullivan;A. Akelaitis;Sang Kyu Lee;Genette I. McGrew;Susan K. Lee;Dong Hoon Choi;L. Dalton
设计、制备并评价了四种树枝状电光（EO）发色团，以探索端对相对于侧对发色团附接几何形状以及不同发色团对树枝状聚合物核心系链基团对EO行为的影响。APC和树枝状发色团的复合样品被发现表现出相当多的热稳定EO性能相比，相应的孤立的发色团的样品。侧上型结合几何形状被认为是最热稳定的，需要更大的热激活能诱导偶极随机化。一个长的，灵活的发色团核心系绳组大大提高了平均EO系数的树枝状系统。
Four dendritic electro-optic (EO) chromophores were designed, prepared, and evaluated to explore the effects on EO behavior of end-on relative to side-on chromophore attachment geometry as well as differing chromophore-to-dendrimer core tether groups. Composite samples of APC and dendritic chromophores were found to exhibit considerably more thermally stable EO properties as compared to samples of the corresponding isolated chromophore. Side-on type binding geometry was found most thermally stable, requiring larger thermal activation energies to induce dipole randomization. Incorporation of a long, flexible chromophore−core tether group greatly enhanced average EO coefficients of the dendritic systems.