Effect of polymerization conditions on physicochemical properties of gold-like lustrous films of organic solvent soluble 3-methoxythiophene oligomers
Effect of polymerization conditions on physicochemical properties of gold-like lustrous films of organic solvent soluble 3-methoxythiophene oligomers
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DOI：
10.1038/s41428-021-00496-w
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发表时间：
2021-05-20
期刊：
影响因子：
2.8
通讯作者：
Hoshino, Katsuyoshi
中科院分区：
文献类型：
--
作者：
Kubo, Minako;Doi, Hirotaka;Hoshino, Katsuyoshi
溶液浇铸膜的二氧化氯掺杂的低聚物（3-甲氧基噻吩）表现出类似于金属金的光泽，然而，上述低聚物及其薄膜的物理化学性质的合成条件的影响仍然underexplored。为了弥补这一差距，本研究探讨了这些性能是如何受到影响的（i）所需的时间添加到单体溶液中的氧化剂溶液（t（a））和（ii）的聚合时间（t（p））低聚物合成，揭示低聚物的分子量，薄膜电导率，和边的层状微晶的量增加，减少t（a）和/或增加t（p）。鉴于边上层状结构的结晶度，连同膜表面粗糙度，强烈影响膜的镜面反射率，所获得的结果预计将有助于制造导电低聚（3-甲氧基噻吩）膜具有可调的颜色和金属般的光泽，用于不同的应用。
Solution-cast films of ClO4--doped oligo(3-methoxythiophene) exhibit a luster similar to that of metallic gold; however, the effects of synthetic conditions on the physicochemical properties of the above oligomer and its films remain underexplored. To bridge this gap, this study examines how these properties are affected by (i) the time required to add the oxidant solution to the monomer solution (t(a)) and (ii) the polymerization time (t(p)) for oligomer synthesis, revealing that oligomer molecular weight, film conductivity, and the amount of edge-on lamellar crystallites increase with decreasing t(a) and/or increasing t(p). Given that the crystallinity of edge-on lamellar structures, together with film surface roughness, strongly influences film specular reflectance, the obtained results are expected to facilitate the fabrication of conductive oligo(3-methoxythiophene) films with tunable color and metal-like luster for diverse applications.