Mechanical Force Induced Formation of Extrinsic Micropores in Coordination Polymers
Mechanical Force Induced Formation of Extrinsic Micropores in Coordination Polymers
复制标题
机械力诱导配位聚合物中外在微孔的形成
DOI：
10.1021/acs.inorgchem.1c02762
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发表时间：
2022
影响因子：
4.6
通讯作者：
Nakamura Takayoshi
中科院分区：
文献类型：
--
作者：
Noro Shin-ichiro;Zheng Xin;Wang AnQi;Suzuki Kazushige;Kosasang Soracha;Horike Satoshi;Padovan Daniele;Nakajima Kiyotaka;Sato Hiroyasu;Takahashi Kiyonori;Nakamura Takayoshi
机械力不仅可以在环境友好的条件下高效地合成新材料，而且可以改变材料的宏观和微观性质。尽管配位聚合物(CPS)具有高度的结构可设计性和多样性，是一种很有吸引力的功能材料，但机械力引起的CPS的结构和功能变化是一个具有挑战性的问题。在本研究中，对两个一维CP，一个是致密堆积的无孔CP[Cu2(Bza)4(Pyr)](1)和另一个多孔CP[Cu2(1-nap)4(Pyr)](2)(bza=苯甲酸盐，1-nap=1-napoate和pyr=嘧啶)进行了球磨，以评估机械力对其孔隙率的影响。球磨处理引起非晶化，使∼_1在195K和P/P_0时的CO_2吸附量增加了30倍，而CO_2的吸附量略有下降。深入的表征研究结果表明，除了颗粒之间的外在中孔/大孔外，球磨还可以形成外在微孔。
Mechanical force can be employed not only to efficiently synthesize new materials under environmentally friendly conditions but also to change the macroscopic and microscopic properties of materials. Although coordination polymers (CPs) are attractive functional materials because they possess high structural designability and diversity, mechanical force-induced structural and functional changes of CPs are challenging issues. In this study, two one-dimensional CPs, one a densely packed nonporous CP [Cu2(bza)4(pyr)] (1) and the other a porous CP [Cu2(1-nap)4(pyr)] (2) (bza = benzoate, 1-nap = 1-naphthoate and pyr = pyrimidine), were subjected to ball-milling to assess the effect of mechanical force on their porosities. Ball mill treatments were found to induce an amorphization and cause a 30 fold enhancement of the CO2adsorption amount at 195 K andP/P0∼ 1 for1and a slightly decreased CO2adsorption amount for2. The results of thorough characterization studies suggest that the formation of extrinsic micropores in addition to extrinsic mesopores/macropores between particles takes place by ball milling.