Metal–Organic Pt(II) Hexagonal-Prism Macrocycles and Their Photophysical Properties

In this work, we present the formation of two open-ended hexagonal-prism tubular macrocycles by the [6+12] self-assembly of the symmetric ~120° organic ligand donor with ~90° Pt(II) acceptor in a 1:2 ratio. The assembled structures were characterized by multinuclear NMR ((1)H NMR, (31)P{(1)H} NMR, and (1)H−(1)H COSY NMR), electrospray ionization mass spectrometry (ESI-TOF-MS), traveling wave ion mobility-mass spectrometry (TWIM-MS), and transmission electron microscopy. Molecular modeling was further conducted to get insight into their structured characteristics. We also examined their photophysical properties.