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首页> 外文期刊>Nature Communications >Combustible ice mimicking behavior of hydrogen-bonded organic framework at ambient condition
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Combustible ice mimicking behavior of hydrogen-bonded organic framework at ambient condition

机译:环境条件下氢键有机骨架的可燃冰模拟行为

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Adsorption of guest molecules by porous materials proceeds in a spontaneous exothermic way, whereas desorption usually requires external energy input as an endothermic process. Reducing such energy consumption makes great sense in practice. Here we report the reversible and automatic methanol (MeOH) adsorption/release in an ionic hydrogen-bonded organic framework (iHOF) constructed from guanidinium cation and borate anion ([B(OCH 3 ) 4 ] 3 [C(NH 2 ) 3 ] 4 Cl?4CH 3 OH, termed Gd-B) at ambient condition. The metastable Gd-B automatically releases all sixteen MeOH molecules (63.4?wt%) via desorption and tetra-methyl borate hydrolysis at ambient atmosphere and the structure can be recovered when re-exposed to MeOH vapor or liquid, mimicking combustible ice behavior but at ambient condition. Reversible capture/release of four guest MeOH molecules is also realized without destroying its crystal structure. The combustible Gd-B paves a way for exploring metastable iHOF materials as carrier for alternative energy source and drug delivery etc.
机译:通过多孔材料对客体分子的吸附以自发的放热方式进行,而解吸通常需要外部能量输入作为吸热过程。降低这种能量消耗在实践中会产生极大的意义。在这里,我们将可逆和自动甲醇(MeOH)吸附/释放在由胍阳离子和硼酸盐阴离子构成的离子氢键合有机骨架(Ihof)中([B(OCH 3)4] 3 [C(NH 2)3]。在环境条件下,4CH 3 OH,称为GD-B)。亚稳态Gd-B通过解吸和四甲基硼酸盐水解在环境气氛下自动释放所有十六型MeOH分子(63.4·wt%),并且在将蒸汽或液体中重新暴露于MeOH蒸气或液体时,可以回收结构,以模仿可燃的冰行为,但在环境条件。在不破坏其晶体结构的情况下也意识到可逆捕获/释放四个客人Meoh分子。可燃GD-B铺设了一种方法,用于探索亚铁材料作为载体的载体,以获得替代能源和药物递送等。

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