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