近日，美国普渡大学Jianguo Mei团队报道了由聚合驱动的自发组装产生的远程延伸链。该项研究成果发表在2026年6月4日出版的《科学》杂志上。

共轭聚合物面临的一个核心挑战是：在保持可溶液加工性的同时实现长程有序，这对于其电学性能媲美结晶无机半导体至关重要。

研究组表明，n-掺杂的聚苯并二呋喃二酮（n-PBDF）能够发生聚合驱动的自组装（PSA），在此过程中，链增长、化学掺杂和结构有序化内在耦合，从而产生长达数百纳米的长程链扩展。研究组揭示，这种自发形成的n-PBDF纳米带源于一种自引发、会聚式的生长机制，该机制由单体与聚合物之间的协同相互作用驱动，并通过质子耦合的双链以及聚合物固有的聚电解质特性得以稳定。利用纳米带中长程扩展的链，高度取向的n-PBDF薄膜展现出金属级的电导率（>10⁴西门子/厘米）。

附：英文原文

Title: Long-range extended chains arising from polymerization-driven spontaneous assembly

Author: Min Chen, Dongyang Wang, Ye Zou, Changsheng Chen, Xixian Yang, Lixin Niu, Guan Sheng, Jin Wang, Lucas Q. Flagg, Lee J. Richter, Bethany A. Phillips, Bufan Xiao, Guangchao Liu, Liyan You, Julia Laskin, Dean M. DeLongchamp, Kejie Zhao, Ye Zhu, Chong-an Di, Jianguo Mei

Issue&Volume: 2026-06-04

Abstract: A central challenge for conjugated polymers is to achieve long-range order while remaining solution-processable, which is essential for matching the electrical performance of their counterparts of crystalline inorganic semiconductors. Here we show that n-doped poly(benzodifurandione) (n-PBDF) can undergo polymerization-driven spontaneous assembly (PSA), in which chain growth, chemical doping, and structural ordering are intrinsically coupled, yielding long-range chain extension over hundreds of nanometers. We reveal that the spontaneously formed n-PBDF nanoribbons arise from a self-initiated, convergent growth mechanism driven by cooperative monomer–polymer interactions and stabilized by proton-coupled duplex chains and the polymer’s intrinsic polyelectrolyte character. With long-range extended chains in the nanoribbons, the aligned n-PBDF thin films demonstrate metallic-level conductivity (>104 Siemens per centimeter).

DOI: aef1777

Source: https://www.science.org/doi/10.1126/science.aef1777