High Solid-State Efficiency Fluorescent Main Chain Liquid Crystalline Polytriazoles with Aggregation-Induced Emission Characteristics
High Solid-State Efficiency Fluorescent Main Chain Liquid Crystalline Polytriazoles with Aggregation-Induced Emission Characteristics
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DOI：
10.1021/ma2021979
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发表时间：
2011-11
期刊：
影响因子：
5.5
通讯作者：
W. Yuan;Zhenqiang Yu;Youhong Tang;J. Lam;Ni Xie;Ping Lu-;E. Chen;B. Tang
中科院分区：
文献类型：
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作者：
W. Yuan;Zhenqiang Yu;Youhong Tang;J. Lam;Ni Xie;Ping Lu-;E. Chen;B. Tang
荧光液晶在光电子器件中有着广泛的应用。然而，高固态发射效率LC的合成是困难的。一方面，阻止传统发光体的聚集是高效率的前提;另一方面，自组织是液晶在介晶状态下的固有属性。由于这种不可调和的冲突，对高效荧光液晶的新策略是非常可取的。在此，开发了一种概念上的新方法，用于高效荧光LC。通过对含联苯的叠氮化合物和含四苯乙烯单元的二炔化合物的合理设计和组合，得到了可溶性、区域规整性、液晶性的高固态发光效率（高达63.7%）的聚三唑。聚合物的物理性质对它们的分子结构很敏感，并且它们的固态量子产率随着间隔基长度的增加而降低。间隔物的长度也影响…
Fluorescent liquid crystals (LCs) have wide applications in optoelectronic devices. However, the synthesis of high solid-state emission efficiency LCs is difficult. On one hand, impeding the aggregation of traditional luminogens is the prerequisite for high efficiencies; on the other hand, self-organization is an inherent attribute for LCs in the mesomorphic states. Because of such irreconcilable conflict, new strategy toward efficient fluorescent LCs is highly desirable. Herein, a conceptually new approach toward high efficiency fluorescent LCs is developed. Through rational design and combination of biphenyl-containing diazides and diynes carrying tetraphenylethylene units, soluble, regioregular, and liquid crystalline polytriazoles with high solid-state emission efficiencies (up to 63.7%) are obtained. The photophysical properties of the polymers are sensitive to their molecular structures and their solid-state quantum yields decrease with increasing spacer length. The spacer length also impacts on the...