Conformation-specific ultraviolet spectroscopy of benzo-18-crown-6 complexes with a potassium cation

被引:12
|
作者
Choi, Chang Min [1 ]
Baek, Ji Young [1 ]
Park, Kwang Sik [1 ]
Heo, Jiyoung [2 ]
Kim, Nam Joon [1 ]
机构
[1] Chungbuk Natl Univ, Dept Chem, Chungbuk 361763, South Korea
[2] Sangmyung Univ, Dept Biomed Technol, Chungnam 330720, South Korea
基金
新加坡国家研究基金会;
关键词
ION-TRAP; COLD; CLUSTERS; UV; TRYPTOPHAN;
D O I
10.1016/j.cplett.2014.01.004
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We investigate conformation-specific UV spectra of benzo-18-crown-6 complexes with a potassium cation using a UV-UV hole burning (HB) technique developed for ions in a quadrupole ion trap. Three different UV-UV HB spectra are obtained: two spectra represent the electronic spectra of conformers, K-a and K-b, respectively, and the third exhibits the transitions of a vibrationally 'hot' K-b conformer. These demonstrate that the UV-UV HB technique, of which the applicability was first tested only for ions of a single isomer, can be used to differentiate vibronic peaks of ions existing as two or more different conformers including their vibrationally 'hot' species. (C) 2014 Elsevier B. V. All rights reserved.
引用
收藏
页码:150 / 153
页数:4
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