AbstractAn efficient method to decrease dielectric constant (ε) of poly(2,6-dihydroxy-1,5-naphthylene) (PDHN) by introducing bulky alkyl side chains was reported. Poly(2,6-dialkoxy-1,5-naphthylene)s (PDANs) were prepared by the O-alkylation of PDHN with alkyl halides. The ε values of PDANs at 10 GHz decreased as the length and size of side chains increased. Especially, PDCHMN exhibited the lowest dielectric constant (ε = 2.29). The ε value results were also supported by refractive index measurement.An efficient method to decrease dielectric constant (ɛ) of poly(2,6-dihydroxy-1,5-naphthylene) (PDHN) by introducing bulky alkyl side chains was reported. Poly(2,6-dialkoxy-1,5-naphthylene)s (PDANs) were prepared by the O-alkylation of PDHN with alkyl halides. The ɛ values of PDANs at 10 GHz decreased as the length and size of side chains increased. Especially, PDCHMN exhibited the lowest dielectric constant (ɛ = 2.29). The ε value results were also supported by refractive index measurement.

中文翻译：

---

低介电常数聚(2,6-二烷氧基-1,5-萘)的合成与表征

摘要报道了一种通过引入庞大的烷基侧链来降低聚(2,6-二羟基-1,5-萘) (PDHN) 介电常数 (ε) 的有效方法。聚 (2,6-二烷氧基-1,5-萘) (PDANs) 是通过 PDHN 与烷基卤化物的 O-烷基化制备的。10 GHz 下 PDAN 的 ε 值随着侧链长度和尺寸的增加而降低。特别是，PDCHMN 表现出最低的介电常数（ε = 2.29）。ε 值结果也得到了折射率测量的支持。报道了一种通过引入庞大的烷基侧链来降低聚 (2,6-二羟基-1,5-萘) (PDHN) 介电常数 (ɛ) 的有效方法。聚 (2,6-二烷氧基-1,5-萘) (PDANs) 是通过 PDHN 与烷基卤化物的 O-烷基化制备的。随着侧链长度和尺寸的增加，10 GHz PDAN 的 ɛ 值降低。特别是，PDCHMN 表现出最低的介电常数（ɛ = 2.29）。ε 值结果也得到折射率测量的支持。