title: [Study of tyrosine online fluorescence spectrum under high pressure].
abstract: The effect of pressure on fluorescence of tyrosine (Tyr) and Tyr in different concentration of Cu2+ was investigated. The results showed that Tyr fluorescence intensity was enhanced with increasing pressure in the absence of Cu2+, with the fluorescence intensity increasing by about 9% when the pressure reached 60 MPa. Furthermore, Tyr fluorescence quenched by Cu2+ and the quenching became stronger when the concentration of Cu2+ was higher. The effect of pressure on the fluorescence of Tyr was different under various Cu2+ concentrations. When Cu2+ concentration was lower, the fluorescence intensity increased relatively weakly (under 60 MPa and [Copper ion]/[Tyr] = 1, fluorescence intensity increased by 14.4%) and vice versa, the fluorescence intensity increased relatively strongly (under 60 MPa and [Copper ion]/[Tyr] = 40, fluorescence intensity increased by 38.4%).
authors.affiliation: College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China. zjjcy@zjut.edu.cn
authors.forename: Chun-yue
authors.initials: CY
authors.lastname: Jiang
authors.forename: Run-qing
authors.initials: RQ
authors.lastname: Xiang
authors.forename: Cheng-man
authors.initials: CM
authors.lastname: Bao
authors.forename: Yun
authors.initials: Y
authors.lastname: Gai
mesh_terms: D003300:Copper; D011312:Pressure; D013050:Spectrometry, Fluorescence; D014443:Tyrosine / Q000032:analysis*
chemical_list: D014443:Tyrosine; D003300:Copper