Singh Amarnauth, Johnson Lawrence W
Department of Chemistry, York College and The Graduate Center of The City University of New York, Jamaica, NY 11451, USA.
Spectrochim Acta A Mol Biomol Spectrosc. 2006 Jun;64(3):761-70. doi: 10.1016/j.saa.2005.05.046. Epub 2006 Feb 2.
Single site fluorescence and absorption spectra of free base octaethylporphyrin, octaethylchlorin and their respective diacids in n-octane at 298 K and 7 K are reported. Vibrational frequencies associated with the ground and excited states were determined from the spectra. All of these moieties exhibit well defined and narrow spectral features, with the exception of the octaethylchlorin diacid; it gives broad spectral bands even at 7 K. Respective Q and B origins were also identified.
报道了游离碱八乙基卟啉、八乙基二氢卟吩及其各自二酸在正辛烷中于298 K和7 K下的单位点荧光光谱和吸收光谱。从光谱中确定了与基态和激发态相关的振动频率。除八乙基二氢卟吩二酸外，所有这些部分均呈现出定义明确且狭窄的光谱特征；即使在7 K时，它也给出宽光谱带。还确定了各自的Q带和B带起始位置。
