Staśkowiak Ewa, Dudkowiak Alina
Faculty of Technical Physics, Poznań University of Technology, Nieszawska 13A, 60965 Poznań, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Jul;61(9):2033-9. doi: 10.1016/j.saa.2004.08.004.
The paper deals with some fast and slow processes of excitation energy deactivation in bacteriochlorophyll c and bacteriopheophytin c. The experiments were carried out in the air, and in oxygen or nitrogen atmosphere at different temperatures. The parameters such as fluorescence yield, the yield of triplet state generation and photostability were estimated. On the basis of these parameters an attempt was made to preliminary select the pigments best suited for medical applications. It seems that the photosensitive and highly fluorescent bacteriochlorophyll c could be used as a fluorescence probe for diagnosis, whereas its derivative without the magnesium ion is better suited for the photochemical reactions occurring during therapeutic treatment.
本文研究了细菌叶绿素c和细菌脱镁叶绿素c中激发能失活的一些快过程和慢过程。实验在空气中以及在不同温度下的氧气或氮气气氛中进行。估算了诸如荧光产率、三重态生成产率和光稳定性等参数。基于这些参数，尝试初步筛选出最适合医学应用的色素。似乎光敏且荧光性强的细菌叶绿素c可作为诊断用的荧光探针，而其不含镁离子的衍生物更适合治疗过程中发生的光化学反应。
