Three-Dimensional Tetrathiafulvalene-Based Covalent Organic Frameworks for Tunable Electrical Conductivity,Journal of the American Chemical Society

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Three-Dimensional Tetrathiafulvalene-Based Covalent Organic Frameworks for Tunable Electrical Conductivity
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2019-08-09 , DOI: 10.1021/jacs.9b06908
Hui Li ₁ , Jianhong Chang ₁ , Shanshan Li ₁ , Xinyu Guan ₁ , Daohao Li ₁ , Cuiyan Li ₁ , Lingxue Tang ₁ , Ming Xue ₁ , Yushan Yan ₂ , Valentin Valtchev _{1,

3} , Shilun Qiu ₁ , Qianrong Fang ₁

Affiliation

The functionalization of three-dimensional (3D) covalent organic frameworks (COFs) is essential to broaden their applications. However, the introduction of organic groups with electroactive abilities into 3D COFs is still very limited. Herein we report the first case of 3D tetrathiafulvalene-based COFs (3D-TTF-COFs) with non- or 2-fold interpenetrated pts topology and tunable electrochemical activity. The obtained COFs show high crystallinity, permanent porosity, and large specific surface area (up to 3000 m2/g). Furthermore, these TTF-based COFs are redox active to form organic salts that exhibit tunable electric conductivity (as high as 1.4 × 10-2 S cm-1 at 120 °C) by iodine doping. These results open a way towards designing 3D electroactive COF materials and promote their applications in molecular electronics and energy storage.

中文翻译：

用于可调电导率的基于三维四硫富瓦烯的共价有机框架

三维 (3D) 共价有机框架 (COF) 的功能化对于扩大其应用至关重要。然而，将具有电活性能力的有机基团引入到 3D COF 中仍然非常有限。在此，我们报告了具有非或 2 倍互穿 pts 拓扑和可调电化学活性的 3D 四硫富瓦烯基 COF（3D-TTF-COF）的第一个案例。获得的 COF 显示出高结晶度、永久孔隙率和大比表面积（高达 3000 m2/g）。此外，这些基于 TTF 的 COF 具有氧化还原活性，可通过碘掺杂形成有机盐，该盐具有可调节的电导率（在 120 °C 时高达 1.4 × 10-2 S cm-1）。这些结果为设计 3D 电活性 COF 材料开辟了道路，并促进了它们在分子电子学和能量存储中的应用。

更新日期：2019-08-09

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