近日，中国科学院长春应用化学研究所简忠保团队研究了全烃高折射率环烯烃聚合物。相关论文于2025年7月31日发表在《中国化学》杂志上。

快速发展的先进材料科学领域，高折射率光学聚合物的发展备受关注。在这些光学聚合物中，环烯烃聚合物（COP）因其优异的透明度、低双折射、良好的耐热性、低吸湿性和优异的耐化学性而成为一种通用平台。然而，它们的折射率相对较低，范围在n = 1.52到1.54之间，这给它们带来了挑战。

研究组证明了芳香族基团在聚合物骨架中的掺入开辟了新的视野，特别是在追求高折射率材料方面。采用开环复分解聚合（ROMP）和加氢法制备了具有高折射率和高玻璃化转变温度（T_g）的COP。值得注意的是，这些全烃COP是无定形的，具有30-282℃的宽T_g范围，具有很高的热稳定性(T_d,5% =414-471°C)，并且具有显著的高折射率（在589 nm处为1.5815-1.6748）和优异的光学透射率（89.0%-95.3%），使其成为先进光学应用的有潜力的候选者。

附：英文原文

Title: All-Hydrocarbon High-Refractive-Index Cyclic Olefin Polymer via ROMP

Author: Yihua Zhao, Yixin Zhang, Lei Cui, Zhongbao Jian

Issue&Volume: 2025-07-31

Abstract: In the rapidly evolving field of advanced materials science, the development of optical polymers with high refractive index has attracted much attention. Among these optical polymers, cyclic olefin polymers (COPs) have stood out as a versatile platform owing to exceptional transparency, low birefringence, good heat resistance, low moisture absorption, and superior chemical resistance. However, they suffer from a relatively low refractive index, ranging from n =1.52 to 1.54, which poses a challenge. In this contribution, we demonstrate that the incorporation of aromatic groups into the polymer backbone has opened up new horizons, particularly in the pursuit of materials with high refractive index. COPs with high refractive index and high glass-transition temperature (Tg) are prepared via ring-opening metathesis polymerization (ROMP) and subsequent hydrogenation. Notably, these all-hydrocarbon COPs are amorphous, have a wide Tg range of 30–282 °C, exhibit high thermal stability (Td,5% =414–471 °C), and possess significantly high refractive index (1.5815–1.6748 at 589 nm) and excellent optical transmittance (89.0%–95.3%), making them promising candidates for advanced optical applications.

DOI: 10.1002/cjoc.70211

Source: https://onlinelibrary.wiley.com/doi/10.1002/cjoc.70211