Poly(mono-, bi- or trifuran): effect of oligomer chain length on the electropolymerization performances and polymer properties

Poly(mono-, bi- or trifuran): effect of oligomer chain length on the electropolymerization performances and polymer properties
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聚(单、双或三呋喃):低聚物链长对电聚合性能和聚合物性能的影响

DOI:
10.1039/c4ra00437j
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发表时间:
2014-03
期刊:
影响因子:
3.9
通讯作者:
Li, Yuzhen
Li, Yuzhen
中科院分区:
化学3区
文献类型:
--
作者:
Lu, Baoyang;Xu, Jingkun;Zhang, Shimin;Li, Yuzhen

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近年来,低聚/多聚呋喃由于其独特的性质和在有机电子领域的应用前景而重新受到广泛关注。为了对不同起始低聚物电合成聚呋喃(PFu)及其性质有一个全面的认识,本文对α-低聚呋喃(Fu)、二呋喃(2Fu)、三呋喃(3Fu)的合成、荧光和电聚合性能进行了全面的报道,并考察了低聚物链长对所得PFu膜结构和性能的影响。在此引入的寡呋喃显示出比相应的寡噻吩和寡硒吩更高的荧光效率(Fu为0.05,2Fu为0.19,3Fu为0.27)。随着起始单体链长的增加,低聚呋喃的起始氧化电位明显降低(Fu为1.25 V,2Fu为0.8 V,3Fu为0.7 V),从而电沉积出了高质量的具有更好光电性能的自支撑PFu薄膜.对由不同起始低聚物合成的PFu进行了结构表征和性能研究,包括FT-IR、UV-vis、表面形貌、荧光、电活性和稳定性、电致变色性能等,进行了系统的调查和全面的讨论。
Most recently, oligo-/polyfurans have regained widely attention due to their unique properties and promising applications in organic electronics. Herein, to acquire a thorough fundamental understanding of the electrosynthesis and properties of polyfuran (PFu) from different initial oligomers, the synthesis, fluorescence, and electropolymerization performances of α-oligofurans, namely furan (Fu), bifuran (2Fu), trifuran (3Fu), were comprehensively reported and the effect of oligomer chain length on the structure and properties of the resulting PFu films were evaluated. The oligofurans introduced here revealed higher fluorescence efficiency (0.05 for Fu, 0.19 for 2Fu and 0.27 for 3Fu) than the corresponding oligothiophenes and oligoselenophenes. The onset oxidation potential of oligofurans decreased obviously (1.25 V for Fu, 0.8 V for 2Fu, and 0.7 V for 3Fu) with the chain length of the starting monomers increasing, thus leading to the electrodeposition of high quality free-standing PFu films with improved optoelectronic properties. Structure characterization and properties of the as-formed PFu from different initial oligomers, including FT-IR, UV-vis, surface morphology, fluorescence, electroactivity and stability, electrochromic properties, etc., were systematically investigated and comprehensively discussed.
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发表时间: 1999-09
影响因子: 8.6
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DOI: 10.1002/(sici)1099-0518(20000115)38:2
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