Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan.
Research Center for Negative Emissions Technologies, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, Japan.
Photochem Photobiol. 2023 Jan;99(1):35-44. doi: 10.1111/php.13655. Epub 2022 Jun 9.
Chlorophyll(Chl)-a derivatives containing some rigid linkers in the C20 substituents, which were inserted between a hydroxymethyl group and the chlorin π-skeleton, were synthesized and their self-aggregation abilities were investigated. Measurements of electronic absorption, circular dichroism and infrared absorption spectra revealed that the zinc complex of a Chl-a derivative bearing a (p-ethynyl)benzyl alcoholic moiety at the C20-position gave its J-aggregates in an aqueous micellar solution through the hydrogen and coordination bonding. These results exhibited the potential of Chl-a derivatives bearing a hydroxyl group in the C20 substituents as the model compounds for chlorosomal light-harvesting antennas.
叶绿素（Chl）-a 衍生物在 C20 取代基中含有一些刚性连接体，这些连接体插入在羟甲基和叶绿素 π-骨架之间，被合成并研究了它们的自聚集能力。电子吸收、圆二色性和红外吸收光谱的测量表明，在 C20 位置带有（p-乙炔基）苄基醇部分的叶绿素-a 衍生物的锌配合物通过氢键和配位键在水胶束溶液中形成 J-聚集体。这些结果表明，在 C20 取代基中带有羟基的叶绿素-a 衍生物作为类囊体光捕获天线的模型化合物具有潜力。
