1186485-45-9Relevant academic research and scientific papers
Double helices with a controlled helicity composed of biphenol-derived phosphoric acid diesters
Yamada, Hidekazu,Maeda, Katsuhiro,Yashima, Eiji
supporting information; experimental part, p. 6794 - 6798 (2010/02/28)
A new modular strategy to build artificial double helical oligomers and polymers with a controlled helicity composed of biphenol-derived phosphoric acid diesters through amidinium-carboxylate salt bridges was reported. The biphenyl derivative was dimerized as a linker and the dimer product was treated with phosphoryl chloride after hydrolysis of the acetoxy groups to afford the optically active phosphoric acid diesters. The calculated results show that the structure of homo-duplex of (S)-1 reveals a double-stranded helical structure, in which two aromatic rings of the linker moieties overlap with each other. The compound is also found to exhibit induced circular dichroism (ICD) in the π-conjugated chromophore regions above 300 nm. Optically active substituents introduced on the phenylene linker unit contribute to the bias in an excess of one helical sense.
