Mochizuki Shunsuke
Instrumental Analysis Group, Technical Division, School of Engineering, Tohoku University, 6-6-11, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan.
J Mass Spectrom. 2014 Nov;49(11):1199-202. doi: 10.1002/jms.3446.
A method to measure CsI cluster ions ((CsI)(n)Cs(+), (CsI)(n)I(-)) from CsI samples in matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) was developed with a 2-[(2E)-3-(4-tert-butylphenyl)-2-methylprop-2-enylidene] malononitrile (DCTB) matrix and additives. Solvent combinations in which the CsI and DCTB solutions were miscible were effective in detecting CsI cluster ions at a mass range of over m/z 2000 and are associated with a characteristic spread of DCTB within the CsI/DCTB mixture. The addition of saccharides or sugar alcohols to the CsI/DCTB mixture improved the DCTB distribution and widened the mass distribution of CsI cluster ions up to m/z 10,000 in the linear mode.
采用2-[(2E)-3-(4-叔丁基苯基)-2-甲基丙-2-烯叉基]丙二腈（DCTB）基质和添加剂，开发了一种在基质辅助激光解吸/电离质谱（MALDI-MS）中测量CsI样品中CsI簇离子（(CsI)nCs⁺、(CsI)nI⁻）的方法。CsI和DCTB溶液可混溶的溶剂组合对于检测质量范围超过m/z 2000的CsI簇离子有效，并且与DCTB在CsI/DCTB混合物中的特征分布有关。向CsI/DCTB混合物中添加糖类或糖醇可改善DCTB分布，并在线性模式下将CsI簇离子的质量分布拓宽至m/z 10,000。
