对乙基苯酚的单色共振双光子电离光谱

来源 :量子光学学报 | 被引量 : 0次 | 上传用户:zlzlzl567
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
对乙基苯酚是构成酪氨酸分子的重要基团,根据其光谱特性可以洞察酪氨酸的光学特性。我们采用超声分子束技术获得了对乙基苯酚的单色共振双光子电离光谱,首次报道了800~1 500cm-1范围的高分辨率激发态振动谱。配合量子化学理论计算分析了各谱对应的振动模式。结果表明取代基越长,分子的激发能越低;取代基的方向对激发能有明显影响;取代基会使苯环平面内的振动能量降低,但取代链的长短对振动能量没有明确影响。研究结果为分子的里德堡态、动力学和零动能光谱的相关研究提供了重要的参考数据。 P-ethyl phenol is an important group forming tyrosine molecules, according to its spectral properties can be insight into the optical properties of tyrosine. We acquired the monochromatic resonance two-photon ionization spectrum of p-ethylphenol using ultrasonic molecular beam technique, and the high-resolution excited-state vibrational spectrum in the range of 800 ~ 1500cm-1 was reported for the first time. According to quantum chemistry theory, the vibration modes of each spectrum are calculated and analyzed. The results show that the longer the substituent, the lower the excitation energy of the molecule; the direction of the substituent has a significant effect on the excitation energy; the substituent reduces the vibrational energy in the plane of the benzene ring, but the substitution of the chain length has no clear influence on the vibrational energy. The results provide important reference data for the study of Rydberg states, kinetics and zero kinetic energy spectra of the molecules.
其他文献
例1患者34岁,孕2产1.因妊娠41周+6,不规律宫缩5 h入院.6年前因臀位行剖宫产术.体检:子宫右旋,宫口未开.因瘢痕子宫立即手术,术中见:左侧子宫正常大,右侧残角子宫妊娠,剖宫产娩出活婴,同时行残角子宫切除及左侧输卵管结扎术。