Slip-Stacking of Benzothiadiazole Can Provide a Robust Structural Motif for Porous Hydrogen-Bonded Organic Frameworks
Slip-Stacking of Benzothiadiazole Can Provide a Robust Structural Motif for Porous Hydrogen-Bonded Organic Frameworks
复制标题
DOI：
10.1021/acs.cgd.2c00420
复制
发表时间：
2022-06
期刊：
影响因子：
--
通讯作者：
Zhuxian Yang;A. Saeki;Asato Inoue;R. Oketani;K. Kamiya;Shuji Nakanishi;Takayoshi Nakamura;Ichiro Hi
中科院分区：
文献类型：
--
作者：
Zhuxian Yang;A. Saeki;Asato Inoue;R. Oketani;K. Kamiya;Shuji Nakanishi;Takayoshi Nakamura;Ichiro Hi
许多有机多孔材料具有二维网状多孔片的层状堆叠结构，而片的良好控制堆叠仍然是具有挑战性的。对此，我们采用正交工作的两个分子间相互作用，即羧基之间的定向氢键和苯并[c][1，2，5]噻二唑（BT）基团的滑移堆积，构建了一个定义明确的多孔二维（2D）氢键有机框架（霍夫）。本文报道了一种由BT衍生物BTTA构成的多孔二维霍夫光纤。活化的HOFBTTA-Ia具有高达275 °C的热稳定性、具有1145 m2 g-1的Brunner-Emmett-Teller（BET）表面积的永久孔隙率和光电导性。类似的基于BT的HOFBTIA-1a的活化也通过溶剂交换过程成功，得到720 m2 g-1的BET表面积。这些结果表明，基于BT的HOFs是一个有前途的多功能多孔材料的平台。
Many organic porous materials have a layered stacking structure of two-dimensionally networked porous sheets, while a well-controlled stacking of the sheets is still challenging to be achieved. Regarding this, we applied orthogonally working two intermolecular interactions, that is, a directional hydrogen bond between carboxy groups and slip-stacking of benzo[c][1,2,5]thiadiazole (BT) groups, to construct a well-defined porous two-dimensional (2D) hydrogen-bonded organic framework (HOF). In this manuscript, we report a porous 2D HOF composed of BT derivativeBTTA. The activated HOFBTTA-1ahas a thermal stability of up to 275 °C, permanent porosity with a Brunner–Emmett–Teller (BET) surface area of 1145 m2g–1, and photoconductivity. Activation of the analogous BT-based HOFBTIA-1awas also succeeded via a solvent exchange process, resulting in a BET surface area of 720 m2g–1. These results shows that the BT-based HOFs can be a promising platform for multifunctional porous materials.