Unusual room temperature CO2 uptake in a fluoro-functionalized MOF: insight from Raman spectroscopy and theoretical studies

被引：79

作者：

Kanoo, Prakash ^{[1
]}

Reddy, Sandeep Kumar ^{[1
]}

Kumari, Gayatri ^{[1
]}

Haldar, Ritesh ^{[2
]}

Narayana, Chandrabhas ^{[1
]}

Balasubramanian, Sundaram ^{[1
]}

Maji, Tapas Kumar ^{[1
,2
]}

机构：

[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, New Chem Unit, Bangalore 560064, Karnataka, India

来源：

CHEMICAL COMMUNICATIONS | 2012年 / 48卷 / 68期

关键词：

METAL-ORGANIC FRAMEWORKS; POROUS COORDINATION POLYMERS; PORE SURFACES; ADSORPTION; CAPTURE;

D O I：

10.1039/c2cc34276f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We herein report an unusual CO2 adsorption behavior in a fluoro-functionalized MOF {[Zn(SiF6)(pyz)(2)]center dot 2MeOH}(n) (1) with a 1D channel system, which is made up of pyrazine and SiF62- moieties. Surprisingly, desolvated 1 (1') adsorbs higher amounts of CO2 at 298 K than at 195 K, which is in contrast to the usual trend. Combined Raman spectroscopic and theoretical studies reveal that slanted pyrazine rings in 1' with an angle of 17.2 degrees with respect to the (200) Zn(II)-Si plane at low temperature block the channel windows and thus reduce the uptake amount.

引用

页码：8487 / 8489

页数：3

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