Room-Temperature Ionic Liquid. A New Medium for Material Production and Analyses under Vacuum Conditions
Room-Temperature Ionic Liquid. A New Medium for Material Production and Analyses under Vacuum Conditions
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DOI：
10.1021/jz100876m
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发表时间：
2010-11-04
影响因子：
5.7
通讯作者：
Torimoto, Tsukasa
中科院分区：
文献类型：
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作者：
Kuwabata, Susumu;Tsuda, Tetsuya;Torimoto, Tsukasa
室温离子液体（RTIL）具有可忽略的蒸气压的特性，使我们能够将RTIL引入需要真空条件的装置中用于材料生产和分析。这种结合为真空条件下新技术的发展开辟了道路。至于材料生产，特别是金属纳米颗粒的合成，这些是磁控溅射到TRIL上，RTIL中的等离子体还原，RTIL上的物理气相沉积，以及电子束和g射线照射到RTIL上。有趣的是，在没有任何稳定剂的RTIL中制备的纳米颗粒在RTIL中不聚集。此外，我们可以在需要真空条件的分析仪器中引入RTIL，例如X射线光光谱（XPS），基质辅助激光解吸/电离质谱（MALDI，MS），扫描电子显微镜（SEM）和透射电子显微镜（TEM）。RTIL在量子束照射下不带电的事实使我们能够建立新的分析技术。此外，通过将物质溶解在RTIL中可获得的均匀条件对于使用上述仪器例如具有高再现性的MALDI-MS进行分析是非常有用的。
A characteristic of negligible vapor pressure that a room temperature ionic liquid (RTIL) possesses enables us to introduce RTILs in the apparatus requiring vacuum conditions for material production and analyses. This combination creates a path toward development of new techniques under vacuum conditions. As for material production especially metal nanoparticle synthesis, those are magnetron sputtering onto TRILs, plasma reduction in RTILs, physical vapor deposition onto RTILs, and electron beam and g-ray irradiation to RTILs. Interestingly the nanoparticles prepared in RTILs without any stabilizing agent do not aggregate in the RTILs. Also, we can introduce RTILs in analytical instruments requiring vacuum conditions such as X-ray photospectroscopy (XPS), matrix-assisted laser desorption/ionization mass spectroscopy (MALDI, MS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The fact that the RTIL is not charged under irradiation by quantum beams enables us to establish new analytical techniques. Furthermore, homogeneous conditions that are obtainable by dissolving a substance in a RTIL are quite useful for conducting analyses using the instruments described above for example MALDI-MS with high reproducibility.