A left-handed 21 helix with triple chiral components: Synthesis, luminescence and SHG response

• Published in: Inorganic chemistry communications 2012-10, Vol.24, p.110-113
• Main Authors: Cheng, Lin, Cao, Qing-Na, Zhang, Xiu-Ying, Gou, Shao-Hua, Fang, Lei
• Format: Article
• Language: English
• Subjects: 21 Left-handed helix; Luminescence; Second-harmonic generation; Triple chiral components
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2012.08.018

A new 21 left-handed helical chain with triple chiral components with the formula, {{Ag2[(1R,1′R,2R,2′R,N1S,N1′S,N2S,N2′S)-4-bppd]}⋅2NO3⋅CH3OH}n (1) [(1R,1′R,2R,2′R)-4-bppd=(1R,1′R,2R,2′R)-N1,N1′-(1,3-phenylenebis(methylene))bis(N2-(pyridin-4-ylmethyl)cyclohexane-1,2-diamine)], has been synthesized by using a prolonged flexible multidentate organic bridging ligand with two (1R,2R)-1,2-diaminocyclohexane subunits. The circular dichroism (CD) spectra and second-harmonic generation (SHG) efficiency measurements of 1 confirmed that it is of structural chirality in the bulk sample. The luminescence properties of 1 indicated that it may have potential applications as an optical material. A new 21 left-handed helical chain with triple chiral components has been synthesized by using a prolonged flexible multidentate organic bridging ligand with two (1R,2R)-1,2-diaminocyclohexane subunits. CD spectra, SHG efficiency and luminescence properties of the helical compound have been discussed. [Display omitted] ► A new 21 left-handed helical chain with triple chiral components has been synthesized and characterized. ► CD spectra and SHG efficiency measurements confirmed that it is of structural chirality in the bulk samples. ► It displays luminescent property indicating that it may have potential applications as an optical material.