Supramolecular assembly of bent dinuclear amphiphilic alkynylplatinum(ii) terpyridine complexes: diverse nanostructures through subtle tuning of the mode of molecular stacking

Abstract

A new class of bent amphiphilic alkynylplatinum(ii) terpyridine complexes was found to adopt different modes of molecular stacking to give diverse nanostructures.

Molecular Alignment of Alkynylplatinum(II) 2,6-Bis(benzimidazol-2-yl)pyridine Double Complex Salts and the Formation of Well-Ordered Nanostructures Directed by Pt···Pt and Donor–Acceptor Interactions

“…It is envisaged that donor–acceptor interactions could serve as an additional driving force to align the stacking of molecules together with the directional Pt···Pt interactions such that well-defined nanostructures could be realized during the self-assembly process upon maintaining a delicate balance between various noncovalent forces. In view of the intriguing spectroscopic properties of alkynylplatinum­(II) polypyridine complexes shown by their self-aggregation associated with the formation of directional Pt···Pt and/or π–π stacking interactions in solution, − ,,,,,,,− it is envisioned that an exploration and study of the synergistic effects brought about by the donor–acceptor interactions could be readily spectroscopically monitored. Furthermore, introducing charged groups onto the pincer ligand of the platinum­(II) complexes to form double complex salts (DCSs) could provide additional electrostatic interactions for the stabilization of the aggregates.…”

Stimuli-Responsive Two-Dimensional Supramolecular Polymers Based on Trinuclear Platinum(II) Scaffolds: Reversible Modulation of Photoluminescence, Cavity Size, and Water Permeability

“…43,44 Despite the substantial efforts in the development of stimuli-responsive metallosupramolecular materials based on Pt II complexes, 22,37,38,45,46 these self-assembled materials mostly possess one-dimensional fibrous nanostructures instead of 2D architectures. 47,48 Recently, we reported the first honeycomb-like 2D SP constructed with dimeric Pt•••Pt building units of a novel trinuclear Pt II complex, 49 which was solution-processable into a multifunctional separation membrane that enables not only efficient capture of anionic Pt II species but also precise sizeselective sieving of nanoparticles. 50 properties, including adaptive expansion and contraction in cavity size, tunable photoluminescence colors, as well as pHmodulated water transportation (Figure 1b).…”

“…Noncovalent metal···metal interactions have attracted increasing attention in the field of supramolecular chemistry because of their intriguing photophysical properties and anisotropic alignment both in solution and in the solid state. − Specifically, square-planar d 8 platinum­(II) (Pt II ) polypyridine complexes are one of the attractive candidates that have been studied due to the directional Pt···Pt interactions. , Despite the substantial efforts in the development of stimuli-responsive metallosupramolecular materials based on Pt II complexes, ,,,, these self-assembled materials mostly possess one-dimensional fibrous nanostructures instead of 2D architectures. , …”

Conformation-Dependent Phosphorescence of Galactose-Decorated Phosphors and Assembling-Induced Phosphorescence Enhancement

“…Noncovalent interactions like hydrogen bonding, halogen bonding, host–guest interactions, and π–π interactions are adept in building rigid assemblies − and restricting nonradiative transition. − Thereinto, hydrogen bonding interactions are outstanding in constructing amorphous RTP systems. Hydrogen bonding-based polymer matrices like poly­(vinyl alcohol) , and polyacrylamide are commonly used for promoting RTP emission.…”