Fluorescence properties of several synthetic carotenoid analogues
have been investigated in order to assess the relationship between
molecular structures and function as a photosynthetic antenna. The
origin of fluorescence is determined by two factors; the length of the
conjugated double bond system and the presence of a carbonyl group. For
efficient energy transfer to chlorophyll a, eight conjugated
double bonds and an associated carbonyl group are required, which
ensures that fluorescence occurs from the S1 state.
为了评估分子结构与作为光合天线的功能之间的关系,研究了几种合成类
胡萝卜素类似物的荧光特性。荧光的起源由两个因素决定:共轭双键系统的长度和羰基的存在。为了有效地将能量转移到叶绿素a,要求具有八个共轭双键和一个相关的羰基,这确保了荧光从S1态发生。