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基于四亚衍生物的半导体有孔的有机框架

María Vicent-Morales¹, María Esteve-Rochina¹, Joaquín Calbo¹

¹Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, Paterna 46980, Spain.

Journal of the American Chemical Society

|May 16, 2022

概括

用于制造半导体多孔有机框架 (HOF) 的四甲酸 (H4TTFTB). 两个稳定的多态体,MUV-20a和MUV-20b,表现出zwitterionic特性和高效的电荷传输,证明它们的半导体性质.

科学领域:

材料科学
有机化学
固态物理

背景情况:

性有机框架 (HOF) 是一种具有可调节结构的材料.
开发具有内在电荷传输特性的有机半导体是一个重大挑战.
甲 (TTF) 衍生物以其电子性质而闻名.

研究的目的:

通过使用四法酸 (H4TTFTB) 合成和描述半导体HOF.
研究所获得的HOF的结构性,电子性和气体吸附性.
展示这些材料作为有机半导体的潜力.

主要方法:

溶热合成以获得不同的HOF多态 (MUV-20a,MUV-20b,MUV-21).
气体吸附分析 (CO2) 评估孔隙性和稳定性
预测收费运输机制的第一原则计算.
电导度测量以确认半导体的行为.

主要成果:

合成了三种多态体 (MUV-20a,MUV-20b,MUV-21),MUV-20a和MUV-20b的结构稳定性和CO2吸附能力分别为1. 91和1. 71 mmol g-1.
MUV-20a和MUV-20b具有充电TTF核和碳酸盐组的特性.
通过TTF π-π堆叠和持久基离子 (TTF•+) 促进的空间跳跃证实了有效的电荷传输.
在没有合成后修改的情况下,达到6.07 × 10-7 S cm-1 (MUV-20a) 和1.35 × 10-6 S cm-1 (MUV-20b) 的记录导电性.

结论:

H4TTFTB可以有效地向HOF传递半导体性.
在MUV-20a和MUV-20b中,zwitterionic性质和TTF堆叠对于它们的电荷传输特性至关重要.
这些zwitterionicHOF代表了一种新的内在半导体多孔有机材料.

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