Preparative Mass Spectrometry Using a Rotating‐Wall Mass Analyzer

作     者：Pei Su Hang Hu Daisy Unsihuay Di Zhang Tiziano Dainese Rosa E. Diaz Jongsu Lee Don K. Gunaratne Haiyan Wang Flavio Maran Jianguo Mei Julia Laskin 

作者机构：Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN 47907 USA School of Materials Engineering Purdue University 701 W. Stadium Avenue West Lafayette IN 47907 USA Department of Chemistry University of Padova 1 Via Marzolo Padova 35131 Italy Birck Nanotechnology Center Discovery Park Purdue University 1205 W. State St. West Lafayette IN 47907 USA Physical Science Division Pacific Northwest National Laboratory P.O. Box 999 MSIN K8-88 Richland WA 99352 USA School of Electrical and Computer Engineering Purdue University 465 Northwestern Avenue West Lafayette IN 47907 USA 

出 版 物：《Angewandte Chemie》 (应用化学)

年 卷 期：2020年第132卷第20期

页      面：7785-7790页

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Elektronenmikroskopie Gold-Nanocluster Hoher Durchsatz Massenspektrometrie Präparation von Oberflächen 

摘      要：The design of functional interfaces is central to both fundamental and applied research in materials science and energy technology. We introduce a new, broadly applicable technique for the precisely controlled high‐throughput preparation of well‐defined interfaces containing polyatomic species ranging from small ions to nanocrystals and large protein complexes. The mass‐dispersive deposition of ions onto surfaces is achieved using a rotating‐wall mass analyzer, a compact device which enables the separation of ions using low voltages and has a theoretically unlimited mass range. We demonstrate an efficient deposition of singly charged Au 144 (SC 4 H 9 ) 60 ions (33.7 kDa), which opens up exciting opportunities for the structural characterization of nanocrystals and their assemblies using transmission electron microscopy. Our approach also enables the high‐throughput deposition of mass‐selected ions from multicomponent mixtures, which is of interest to the controlled preparation of surface gradients and rapid screening of molecules in mixtures for a specific property.