Study on Phenylalanine Substituted Serine Octamer Ions by Infrared Photodissociation Spectroscopy and Their Application in Chiral Differentiation

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Study on Phenylalanine Substituted Serine Octamer Ions by Infrared Photodissociation Spectroscopy and Their Application in Chiral Differentiation

- Study on Phenylalanine Substituted Serine Octamer Ions by Infrared Photodissociation Spectroscopy and Their Application in Chiral Differentiation
- Vol. 37, Issue 10, Pages: 1269-1273(2018)
- 作者机构：
  
  1. 南开大学化学学院元素有机化学国家重点实验室
  2. 南开大学天津化学化工协同创新中心
- 作者简介：
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Study on Phenylalanine Substituted Serine Octamer Ions by Infrared Photodissociation Spectroscopy and Their Application in Chiral Differentiation. [J]. 37(10):1269-1273(2018)
DOI：

Study on Phenylalanine Substituted Serine Octamer Ions by Infrared Photodissociation Spectroscopy and Their Application in Chiral Differentiation. [J]. 37(10):1269-1273(2018) DOI：

摘要

通过电喷雾电离的方法，结合质谱-红外解离光谱技术对苯丙氨酸取代的丝氨酸八聚体团簇离子的红外解离光谱手性效应进行了研究，获得了相应的团簇离子在2 700~3 600 cm-1 的红外解离光谱。实验结果显示，苯丙氨酸取代的丝氨酸八聚体团簇离子均存在明显的同手性优势。通过比较相应红外解离光谱图的差异或在特定波长处的红外解离质谱均可实现苯丙氨酸单元的手性区分。

Abstract

A method of infrared photodissociation（IRPD）spectroscopy was developed for the determination of phenylalanine substituted L serine octamer ions.The phenylalanine substituted L serine octamer ions were generated by electrospray ionization（ESI）and studied by mass spectrometry（MS）coupled with infrared photodissociation（IRPD）spectroscopy.Chiral preference was found existing in such cluster ions.IRPD experiments showed that the ions of ［L Ser7+L/D Phe1］H+ and ［L Ser6+L/D Phe2］H+ were observed in the range of 2 700-3 600 cm-1.Chiral differentiation was fulfilled by comparing their IRPD spectra or IRPD mass spectra obtained at some special wavenumbers.

关键词

电喷雾电离红外解离光谱手性区分苯丙氨酸丝氨酸八聚体

Keywords

electrospray ionization（ESI）infrared photodissociation（IRPD）spectroscopychiral differentiationphenylalanineserine octamer

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