Hybrid polyion complex micelles from poly(vinylphosphonic acid)-based double hydrophilic block copolymers and divalent transition metal ions

Comprehensive study of the formation of stable colloids of Cu Al layered double hydroxide assisted by double hydrophilic block copolymers

“…and 10000 g mol -1 , respectively, they are indicated close to each block name, as follows: PAm10000-b-PAA1500. This DHBC polymer was prepared according to a well-established RAFT/MADIX polymerization of acrylic acid (AA) in aqueous solution using a macroxanthate PAmXA1 (Layrac et al, 2015). MgCl2 .…”

“…Cu-containing LDH are known for their great potential as precursors of supported copper-based catalysts; their preparation as stable nanoparticles is then highly desirable. However, due to the remarkable efficiency of Cu 2+ among divalent cations to form HPIC micelles (Layrac et al, 2015), the formation of Cu-Al LDH colloids assisted by complexing DHBC represents a major challenge.…”

“…Then, in addition to insights into the mechanism of formation, a relevant objective of the present work was to obtain pure Cu-Al LDH phase through the direct colloidal synthesis route from HPIC micelles. A main drawback for the formation of Cu-Al LDH through the HPIC micelle route, could result from the higher complexing ability of DHBC for Cu 2+ than for the other transition metal ions, i. e. Ni 2+ , Co 2+ , Mn 2+ , Cu 2+ , Zn 2+ (Layrac et al, 2015) in agreement with its peculiar position in the series of Irving-Williams referring to the stability constants of formation of high-spin complexes (Irving and Williams, 1953). Therefore, due to the high DHBC-Cu 2+ affinity, competitive complexation will be far less favorable to Al 3+ than in the case of Mg 2+ .…”

Introduction to the special issue of Polymer on “Macromolecular Engineering” dedicated to Professor Krzysztof Matyjaszewski on the occasion of his 65th birthday

“…Of particular importance is the ability to prepare large systematic "libraries" of polymeric materials in order to rapidly screen their behavior and identify compositions suitable for specific applications. A series of double hydrophilic block copolymers containing a segment with functional groups able to complex to various metal ions, are described by Destarac [53]. The work by Costanzo [54] demonstrates the use of well-defined block copolymers for the dispersion of carbon nanotubes.…”

Phosphorus‐Containing Gradient (Block) Copolymers via RAFT Polymerization and Postpolymerization Modification

“…Reversible addition‐fragmentation chain transfer (RAFT) polymerization is a powerful tool for tailoring polymer properties, such as molar mass, functionality, and architecture, with a high level of precision . RAFT offers unparalleled functional group tolerance compared to other reversible deactivation radical polymerization techniques, allowing for control over the polymerization of a wide range of functional monomers, including less activated monomers (LAMs,) such as vinyl esters, vinylamides, N ‐vinyl heteroaromatics, and vinyl phosphonates which are typically difficult to control. Importantly RAFT is compatible with phosphine functionality as illustrated through the use of RAFT agents containing either free or complexed phosphines and the polymerization of phosphine‐containing monomers .…”