Synthesis, luminescence enhancement, and self-assembly behaviours of platinum(ii)-containing ABC triblock metallopolymers

Abstract

Here we design and synthesize a series of ABC triblock metallopolymers that contain octadecyl and PEG chains and 2,6-bis(benzimidazol-2′-yl)pyridine platinum(II) complexes, sequentially. These metallopolymers can self-assemble into micellelike aggregates in...

Advances and New Opportunities in the Rheology of Physically and Chemically Reversible Polymers

“…The physically reversible networks include many types depending on the species of physical interactions, including van der Waals interaction, − π–π stacking interaction, , hydrogen-bonding interaction, − ionic interaction, ,,− metal–ligand interaction, − and so on, whose energy levels are compared in Figure . In particular, the interaction energies of hydrogen bonds and ionic interactions are comparable to or 1 order higher than the thermal energy k B T in a temperature range from 20 to 300 °C (a usual temperature range where the polymer materials are applied or processed), with k B being the Boltzmann constant and T being the absolute temperature, enabling these interactions to be suitable for the formation of physically reversible networks.…”

Synthesis of Platinum(II)-Containing Block Copolymers: Luminescence Enhancement and Controllable Self-Assembly

“…1,2,28−41 They resemble, in size, π-conjugated macrocycles, 42,43 and oligomers 44−46 that are commonly utilized to create rod−coil diblock copolymers and their functional nanoassemblies. Accordingly, the nanosized metal−ligand complexes such as zinc(II), 1,2,28−30 lanthanide(III), 1,2,28−30 and platinum(II) complexes 31−41 can be recognized as an individual, rigid building unit to microphase separate polymeric segments, leading to the creation of micelle-like aggregates in solution [31][32][33][34][35]37,38 and ordered nanostructures in thin film. 39−41 The resulting nanoassemblies can be directly imaged by using transmission electron microscopy (TEM) without any other staining as a result of the higher electron density of metal−ligand complexes than polymeric segments.…”

“…39−41 The resulting nanoassemblies can be directly imaged by using transmission electron microscopy (TEM) without any other staining as a result of the higher electron density of metal−ligand complexes than polymeric segments. [28][29][30][31][32][33][34][35]37,38,47 As part of our program to study metal-containing polymers, we recently designed and synthesized a series of [Pt(bzimpy)-Cl] + -containing polymers. [31][32][33][34][35][36]40,41 The used polymeric segments include polystyrene (PS), 31−36 PEO, 40 and poly(εcaprolactone).…”

“…[28][29][30][31][32][33][34][35]37,38,47 As part of our program to study metal-containing polymers, we recently designed and synthesized a series of [Pt(bzimpy)-Cl] + -containing polymers. [31][32][33][34][35][36]40,41 The used polymeric segments include polystyrene (PS), 31−36 PEO, 40 and poly(εcaprolactone). 41 The [Pt(bzimpy)Cl] + complex is planar and has a molecular size of 1.2 × 1.0 nm 2 × 0.35 nm.…”

“…40,41 Their phosphorescence emissions and quantum yields are intensified significantly as a result of increasing Pt(II)•••Pt(II) and/or π−π stacking interactions. [31][32][33][34][35][36]40,41 Up to now, great effort has mainly focused on [Pt(bzimpy)Cl] + -containing homopolymers, while [Pt(bzimpy)Cl] + -containing diblock copolymers are rarely explored.…”