ROSEOFLAVIN AS A BLUE LIGHT RECEPTOR ANALOG: SPECTROSCOPIC CHARACTERIZATION
ROSEOFLAVIN AS A BLUE LIGHT RECEPTOR ANALOG: SPECTROSCOPIC CHARACTERIZATION
复制标题
玫瑰黄素作为蓝光受体类似物：光谱表征
DOI：
--
复制
发表时间：
1980
期刊：
影响因子：
--
通讯作者：
K. L. Poff
中科院分区：
文献类型：
--
作者：
P. Song;E. B. Walker;R. Vierstra;K. L. Poff
摘要-玫瑰黄素的蓝光吸收带沿大致连接N3-C8位置的轴沿着偏振。一个弱的，第二次π→π* 跃迁，偏振角约为。25°隐藏在蓝色吸收带的短波长侧。玫瑰黄素的激发态比基态碱性稍强，相差1.5 pKa单位。玫瑰黄素的荧光量子产率和寿命明显低于其他黄素，因此使其作为蓝光感光体的动力学效率较低。
Abstract— The blue light absorption band of roseoflavin is polarized along the axis roughly connecting N3‐C8 positions. A weak, second π→π* transition with a polarization angle of ca. 25° is hidden under the short wavelength side of the blue absorption band. The excited state of roseoflavin is somewhat more basic than the ground state, by a 1.5 pKa unit. The fluorescence quantum yield and lifetime of roseoflavin are substantially lower than those of other flavins, thus making it kinetically less efficient as a blue light photoreceptor.