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Long-range extended chains arising from polymerization-driven spontaneous assembly ¾ÛºÏÇý¶¯×Ô·¢×é×°Ðγɳ¤³ÌÀ©Õ¹Á´ ¡ø ×÷ÕߣºMIN CHEN, DONGYANG WANG, YE ZOU, CHANGSHENG CHEN, XIXIAN YANG, LIXIN NIU, JIN WANG, LUCAS Q. FLAGG, AND JIANGUO MEI, etc. ¡øÁ´½Ó£º https://www.science.org/doi/10.1126/science.aef1777 ¡øÕªÒª£º ¹²éî¾ÛºÏÎïÃæÁÙµÄÒ»¸öºËÐÄÌôÕ½ÊÇÔÚ±£³ÖÈÜÒº¿É¼Ó¹¤ÐÔµÄͬʱʵÏÖ³¤³ÌÓÐÐò£¬Õâ¶ÔÓÚÆ¥Åä¾§ÌåÎÞ»ú°ëµ¼Ìå²ÄÁϵĵçѧÐÔÄÜÖÁ¹ØÖØÒª¡£Ñо¿±íÃ÷£¬nÐͲôÔӵľ۱½²¢¶þ߻૶þͪ£¨n-PBDF£©Äܹ»·¢Éú¾ÛºÏÇý¶¯µÄ×Ô·¢×é×°£¬Ôڴ˹ý³ÌÖÐÁ´Ôö³¤¡¢»¯Ñ§²ôÔӺͽṹÓÐÐòÄÚÔÚñîºÏ£¬´Ó¶øÐγÉÊý°ÙÄÉÃ׳߶ȵij¤³ÌÁ´À©Õ¹¡£ Ñо¿±íÃ÷£¬×Ô·¢ÐγɵÄn-PBDFÄÉÃ×´øÔ´ÓÚÒ»ÖÖ×ÔÒý·¢¡¢ÊÕÁ²Éú³¤µÄ»úÖÆ£¬¸Ã»úÖÆÓɵ¥Ì塪¾ÛºÏÎïÐͬÏ໥×÷ÓÃÇý¶¯£¬²¢Í¨¹ýÖÊ×ÓñîºÏµÄË«Á´ºÍ¾ÛºÏÎï±¾Éí¹ÌÓеľ۵ç½âÖÊÌØÐÔµÃÒÔÎȶ¨¡£Æ¾½èÄÉÃ×´øÖг¤³ÌÀ©Õ¹µÄÁ´½á¹¹£¬È¡ÏòÅÅÁеÄn-PBDF±¡Ä¤±íÏÖ³ö½ðÊô¼¶±ðµÄµçµ¼ÂÊ£¨>10? S/cm£©¡£ ¡ø Abstract£º 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. In this work, 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). |
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