[Analysis of the spectrum of damage effects of low energy N+ ions on cytosine aqueous solution].
Low energy N+ ions were produced by gas arc-discharge and the ions were accelerated into cytosine (C) aqueous solution. Changes in UV and infrared spectra of C after this kind of ions' action were investigated. UV spectra showed that absorption at 259 nm gradually decreased and lambda max of C solution moved toward the longer wavelength with the time. Thus, it was deduced that C was damaged and some fragments including -NO2 and -NH2 groups might have been produced. Judging from the IR spectra, the disappearance of the peak of 3,005 cm-1 confirmed the formation of -NO2 groups. All these results revealed that N+ ions caused various damages on C molecules and many new substances were formed. These new substances were not synthesized only by combination of the damage fragments in the solution, but also by "deposition" of N+ from outside.
Shi
H B
HB
Institute of Plasma Physics, Academia Sinica, Hefei 230031, China.
Shao
C L
CL
Wang
X Q
XQ
Yu
Z L
ZL
D003596:Cytosine / Q000737:chemistry*; D007477:Ions; D009584:Nitrogen; D012996:Solutions; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D007477:Ions; D012996:Solutions; D003596:Cytosine; D009584:Nitrogen