The
syntheses of 4′-substituted chiral 2,2′:6′,2″-terpyridine
(tpy) ligands with predetermined configurations and directionalities
are rather limited in the supramolecular chemistry field. In this
study, a carbazole-linked ditopic chiral ligand L was
synthesized using 4′-bromo-substituted pineno-fused tpy 5 as the precursor. Upon complexation with Cd(NO3)2·4H2O and Zn(NO3)2·6H2O, two enantiomerically pure metallosupramolecules,
[Cd3L3] and [Zn4L4], have
been self-assembled and characterized by NMR, electrospray ionization-mass
spectrometry, traveling wave ion mobility-mass spectrometry, and DOSY
analysis. In addition, their optical properties are characterized
by UV–vis, fluorescence, circular dichroism, and circularly
polarized luminescence, suggesting an efficiency transmission and
amplification of chirality from the ligand to metal center via self-assembly.
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