All-Hydrocarbon High-Refractive-Index Cyclic Olefin Copolymer Optical Materials,Macromolecules

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All-Hydrocarbon High-Refractive-Index Cyclic Olefin Copolymer Optical Materials
Macromolecules ( IF 5.1 ) Pub Date : 2024-09-03 , DOI: 10.1021/acs.macromol.4c01426
Yihua Zhao _{1,

2} , Lei Cui ₁ , Yixin Zhang ₁ , Zhongbao Jian _{1,

2}

Affiliation

High-refractive-index polymers are important materials in optoelectronics. Cyclic olefin copolymers (COCs) are among the most promising optical materials; however, high-refractive-index COCs still remain unsolved but are highly desired. In this study, principles for designing all-hydrocarbon high-refractive-index COCs were proposed. Diverse COCs were prepared by zirconium-catalyzed coordination–insertion copolymerization of nine types of aromatic group-containing cyclic olefins with ethylene. In all-hydrocarbon optical polymers, these COCs have significantly higher refractive indices of >1.60, >1.65, and >1.70 compared to the previous values at moderate cyclic olefin incorporation (maximum: 35.7 mol%) and are highly optically transparent (90%–94%) in the visible wavelength range. Furthermore, these COCs are amorphous, have a wide T_g range of 92–262 °C, exhibit high thermal stability (T_d,5% = 372–442 °C), and possess extremely low hygroscopicity of <0.01%. These merits of all-hydrocarbon COCs indicate their potential as optical materials.

中文翻译：

全碳氢高折射率环烯烃共聚物光学材料

高折射率聚合物是光电子学领域的重要材料。环烯烃共聚物（COC）是最有前途的光学材料之一；然而，高折射率 COC 仍未得到解决，但人们非常渴望。在这项研究中，提出了全烃高折射率COC的设计原则。通过锆催化九种含芳香族环烯烃与乙烯的配位插入共聚制备了多种COC。在全烃光学聚合物中，与中等环烯烃掺入情况下的先前值（最大值：35.7 mol%）相比，这些 COC 具有显着更高的折射率 >1.60、>1.65 和 >1.70，并且高度在可见光波长范围内光学透明 (90%–94%)。此外，这些COC是无定形的，具有92-262°C的宽T _g范围，表现出高热稳定性（ T _d,5% = 372-442 °C），并具有<0.01%的极低吸湿性。全碳氢化合物COC的这些优点表明了它们作为光学材料的潜力。

更新日期：2024-09-03

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