With the popularization of 5G technology and artificial intelligence, thermally conductive epoxies with self‐healing ability will be widely used in flexible electronic materials. Although many compounds containing both performances have been synthesized, there is little systematic theory to explain this coordination mechanism. In this paper, alkyl chains of different lengths were introduced to epoxies for discussing the thermally conductive, the self‐healing performance, and the synergistic effect. A series of electronic‐grade biphenyl epoxies (4,4'‐bis(oxiran‐2‐ylmethoxy)‐1,1'‐biphenyl (1), 4,4'‐bis(2‐(oxiran‐2‐yl)ethoxy)‐1,1'‐biphenyl (2), 4,4'‐bis(3‐(oxiran‐2‐yl)propoxy)‐1,1'‐biphenyl (3), and 4,4'‐bis(4‐(oxiran‐2‐yl)butoxy)‐1,1'‐biphenyl (4) were synthesized and characterized. Furthermore, they were cured with decanedioic acid to produce polymers. Results showed that alkyl chains can both affect the two properties, and the epoxies suitable for specific application scenarios can be prepared by adjusting the length of alkyl chains. In terms of thermal conductivity, compound 1 was a most promising material. However, compound 4 was expected to be utilized in flexible electronic devices because of its acceptable thermal conductivity, self‐healing ability, transparency, and flexibility.

中文翻译：

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具有可控“导热自修复”协同作用的环氧树脂：满足柔性电子器件需求的新材料

随着5G技术和人工智能的普及，具有自修复能力的导热环氧树脂将在柔性电子材料中得到广泛应用。尽管已经合成了许多兼具这两种性能的化合物，但很少有系统的理论来解释这种配位机制。本文将不同长度的烷基链引入环氧树脂中，讨论其导热性、自修复性能和协同效应。一系列电子级联苯环氧树脂 (4,4'-双(环氧乙烷-2-基甲氧基)-1,1'-联苯 (1), 4,4'-双(2-(环氧乙烷-2-基)乙氧基)-1,1'-联苯 (2)、4,4'-双(3-(环氧乙烷-2-基)丙氧基)-1,1'-联苯 (3) 和 4,4'-双(4合成并表征了-(环氧乙烷-2-基)丁氧基)-1,1'-联苯(4)。此外，它们用癸二酸固化生成聚合物，结果表明烷基链可以影响这两种性能。通过调整烷基链的长度可以制备适合特定应用场景的环氧树脂。就导热性而言，化合物1是最有前途的材料，而化合物4由于其可接受的导热性而有望在柔性电子器件中得到应用。导电性、自愈能力、透明度和柔韧性。