Directional Self-Assembly and Photoinduced Polymerization of Diacetylene- Containing Platinum(II) Terpyridine Complexes

Abstract

A series of newly designed and synthesized diacetylene-containing platinum(II) terpyridine complexes exhibited intriguing self-assembly properties.1 Facilitated by Pt···Pt, π–π stacking, hydrogen-bonding and hydrophobic–hydrophobic interactions, these complexes are preorganized to readily undergo topochemical polymerization reactions upon photoirradiation.1 The in situ polymerization of the diacetylene units to form polydiacetylene, indicated by the UV–vis spectral changes, gel permeation chromatography and dynamic light scattering, was found to alter their assembly behaviors, as revealed by TEM images.1 It is envisaged that this work may offer alternative promising candidates for the engineering of functional nanoaggregates with desirable photophysical, photochemical and self-assembly properties. Reference: 1. Fang, S.; Leung, S. Y.-L.; Li, Y.; Yam, V. W.-W. Chem.Eur. J. 2018, 24, 15596–15602.