Characterization of self-assembling nano-sized structures by means of coldspray ionization mass spectrometry

被引：180

作者：

Sakamoto, S

Fujita, M

Kim, K

Yamaguchi, K ^{[1
]}

机构：

[1] Chiba Univ, Ctr Chem Anal, Inage Ku, Chiba 2638522, Japan

[2] Nagoya Univ, Sch Engn, Dept Appl Chem, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Japan Sci & Technol Corp, CREST, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[4] Pohang Univ Sci & Technol, Dept Chem, Pohang 790784, South Korea

来源：

TETRAHEDRON | 2000年 / 56卷 / 07期

关键词：

mass spectrometry; catenanes; supramolecular chemistry; rotaxanes;

D O I：

10.1016/S0040-4020(99)01092-3

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Coldspray ionization (CSI) for mass spectrometry (MS) has been developed and applied to characterize labile self-assembling nano-sized metal complexes. While conventional ESI-MS is not applicable to these compounds because of their instability, CSI affords multiply charged molecular ions with many solvent (acetonitrile) molecules attached. We measured the exact mass of these molecular ions by using crown ether compounds as internal standards. Highly concentrated solutions (ca. 1 mmol/L) of the complexes, whose framework constitution is strongly influenced by concentration, could be used. In the case of some aqueous solutions, the molecular ions could be clearly observed by adjusting the temperature of the desolvation chamber to gear the freezing point of water. This CSI-MS should be applicable to a wide variety of labile ionic compounds. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：955 / 964

页数：10

共 33 条

[1] Characterization of a single crystal cubic prussian blue Co8(tacn)8(CN)12 cluster by ion trap and Fourier transform ion cyclotron resonance mass spectrometry with microelectrospray ionization [J].