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The Interaction of Guest Molecules with Co‐MOF‐74: A Vis/NIR and Raman Approach
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-04-18 , DOI: 10.1002/anie.201801966 Ina Strauss 1 , Alexander Mundstock 1 , Dominik Hinrichs 1 , Rasmus Himstedt 1 , Alexander Knebel 1 , Carsten Reinhardt 2 , Dirk Dorfs 1 , Jürgen Caro 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-04-18 , DOI: 10.1002/anie.201801966 Ina Strauss 1 , Alexander Mundstock 1 , Dominik Hinrichs 1 , Rasmus Himstedt 1 , Alexander Knebel 1 , Carsten Reinhardt 2 , Dirk Dorfs 1 , Jürgen Caro 1
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Co‐MOF‐74 rod like crystals with a length of several hundred micrometers are synthesized by a solvothermal procedure and their interaction with different gases is evaluated for selective gas sensing. We show strongly anisotropic absorption behavior of the Co‐MOF‐74 crystals when illuminated with polarized light. The interactions of guests (CO2, propane, propene, Ar, MeOH, H2O) with Co‐MOF‐74, is studied by various spectroscopic techniques. Vis/NIR shows peak shifts of Co‐MOF‐74 depending on the interaction with the guest. In the visible and the NIR the maximum absorbance is shifted selectively corresponding to the intensity of the CoII–guest interaction. Even propene and propane could be distinguished at room temperature by their different interactions with Co‐MOF‐74. Raman spectroscopy was used to detect a modified vibrational behavior of Co‐MOF‐74 upon gas adsorption. We show that the adsorption of H2O leads to a characteristic shift of the peak maxima in the Raman spectra.
中文翻译：
客体分子与Co-MOF-74的相互作用：Vis / NIR和拉曼方法
通过溶剂热法合成了长度为数百微米的Co-MOF-74棒状晶体，并评估了它们与不同气体的相互作用，以进行选择性气体传感。当用偏振光照射时，我们显示出Co-MOF-74晶体的强烈各向异性吸收行为。通过各种光谱技术研究了客体（CO 2，丙烷，丙烯，Ar，MeOH，H 2 O）与Co-MOF-74的相互作用。Vis / NIR根据与来宾的交互显示Co-MOF-74的峰位移。在可见光和近红外光谱中，最大吸收度对应于Co II的强度有选择地移动–来宾互动。甚至丙烯和丙烷在室温下也可以通过与Co-MOF-74的不同相互作用来区分。拉曼光谱法用于检测吸附气体后Co-MOF-74的振动特性。我们表明，H 2 O的吸附导致拉曼光谱中峰最大值的特征偏移。
更新日期：2018-04-18
中文翻译：
客体分子与Co-MOF-74的相互作用：Vis / NIR和拉曼方法
通过溶剂热法合成了长度为数百微米的Co-MOF-74棒状晶体，并评估了它们与不同气体的相互作用，以进行选择性气体传感。当用偏振光照射时，我们显示出Co-MOF-74晶体的强烈各向异性吸收行为。通过各种光谱技术研究了客体（CO 2，丙烷，丙烯，Ar，MeOH，H 2 O）与Co-MOF-74的相互作用。Vis / NIR根据与来宾的交互显示Co-MOF-74的峰位移。在可见光和近红外光谱中，最大吸收度对应于Co II的强度有选择地移动–来宾互动。甚至丙烯和丙烷在室温下也可以通过与Co-MOF-74的不同相互作用来区分。拉曼光谱法用于检测吸附气体后Co-MOF-74的振动特性。我们表明，H 2 O的吸附导致拉曼光谱中峰最大值的特征偏移。
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