1513889-48-9Relevant academic research and scientific papers
Vapor-induced chiroptical switching in chiral cyclometalated platinum(ii) complexes with pinene functionalized C^N^N ligands
Zhang, Xiao-Peng,Wu, Tao,Liu, Jian,Zhang, Jing-Xuan,Li, Cheng-Hui,You, Xiao-Zeng
, p. 184 - 194 (2014)
A new couple of enantiomeric chiral cyclometalated platinum(ii) complexes Pt(La)(CC-Ph) (1a) and Pt(Lb)(CC-Ph) (1b) (La = (-)-4,5-pinene-6′-phenyl-2,2′-bipyridine, Lb = (+)-4,5-pinene-6′-phenyl-2,2′-bipyridine) have been designed and synthesized. These complexes were found to undergo crystal transformation upon exposure to dichloromethane vapor, resulting in slight changes of vapochromism/vapoluminescence but very distinct chiroptical switching behaviour. Single crystal X-ray diffraction studies revealed that the two polymorphs (Form-Y and Form-O) of complexes 1a/1b display dissimilar molecular arrangements as well as inter-molecular interactions, which are responsible for the switching behaviour in electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) spectra. The vapor-induced chiroptical switching behaviour in these platinum(ii) complexes is unique and may lead to novel chiroptical sensing applications.
