Transformation, memorization and amplification of chirality in cationic Co(III) complex–porphyrin aggregates
Transformation, memorization and amplification of chirality in cationic Co(III) complex–porphyrin aggregates
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DOI：
10.1039/c0nj00022a
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发表时间：
2010-07
影响因子：
3.3
通讯作者：
Jian Wang;Dongdong Ding;Lixi Zeng;Qian Cao;Yujian He;Hui Zhang
中科院分区：
文献类型：
--
作者：
Jian Wang;Dongdong Ding;Lixi Zeng;Qian Cao;Yujian He;Hui Zhang
采用绝对不对称合成法合成了顺式[CoBr（NH3）（en）2] Br 2的对映体。采用紫外-可见光谱、圆二色谱、荧光光谱和原子力显微镜研究了非手性5，10，15，20-四（4-磺酸基苯基）卟啉（TPPS）与两种手性阳离子Co（III）配合物的相互作用.结果表明，阳离子Co（III）配合物可以诱导卟啉形成手性J-聚集体，金属中心的手性可以转移到J-聚集体中，并且手性在卟啉J-聚集体中能够被记忆和放大.因此，这应该是一个很好的手性模型，了解类似的过程中的物理和生物系统。
Λ- and Δ-enantiomers of cis-[CoBr(NH3)(en)2]Br2 were obtained by absolute asymmetric synthesis. The interactions between the achiral 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) and two chiral cationic Co(III) complexes were studied by UV-vis spectroscopy, circular dichroism (CD), fluorescence spectroscopy and atomic force microscopy (AFM). It was found that the cationic Co(III) complexes can induce the formation of chiral porphyrin J-aggregates, that the metal-centered chirality can be transferred to the J-aggregates, and that the chirality was able to be memorized and amplified in the porphyrin J-aggregates. Therefore, this should be a good chiral model for understanding similar processes in physical and biological systems.