Amphiphilic molecular design as a rational strategy for tailoring bicontinuous electron donor and acceptor arrays:: Photoconductive liquid crystalline oligothiophene-C60 dyads
Amphiphilic molecular design as a rational strategy for tailoring bicontinuous electron donor and acceptor arrays:: Photoconductive liquid crystalline oligothiophene-C60 dyads
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DOI：
10.1021/ja802757w
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发表时间：
2008-07-16
影响因子：
15
通讯作者：
Aida, Takuzo
中科院分区：
文献类型：
--
作者：
Li, Wei-Shi;Yamamoto, Yohei;Aida, Takuzo
温度范围光电导近晶相。一种具有密集排列的施主和受主单元的双连续阵列的液晶。相比之下，当仅用石蜡楔形物（1（Lipo））改性时，二元体形成近晶A液晶中间相，然而其导电性差。如吸收光谱特征沿着与同步辐射小角X射线散射轮廓所示。1（Lipo）在层状结构中不采用均匀的头/尾取向。这种有缺陷的供体和受体阵列可能包含大量的捕获位点，导致寿命短的电荷载流子，如通过闪光光解时间分辨微波电导率研究所观察到的。
Temperature range a photoconducting smectic. A liquid crystal having bicontinuous arrays of densely packed donor and acceptors units. In contrast, when modified with only paraffinic wedges(1(Lipo)), the dyad forms a smectic A liquid crystalline mesophase, which however is poorly conductive. As indicated by an absorption spectral feature along with a synchron radiation small-angle X-ray scattering profile. 1(Lipo) in the lamellar structure does not adopt a uniform head/tail orientation. Such defective donor and acceptor arrays likely contain a large number of trapping sites, leading to short-lived charge carriers, as observed by a flash photolysis time-resolved microwave conductivity study.