The surfactant-free emulsion polymerization of vinyl acetate (VAc) was achieved using RAFT/MADIX-mediated polymerization-induced self-assembly (PISA) process in water. First, well-defined hydrophilic macromolecular RAFT agents (macroRAFT) bearing a xanthate chain end were synthesized by RAFT/MADIX polymerization of N-vinylpyrrolidone (NVP) and N-acryloylmorpholine (NAM) or by post-modification of commercial poly(ethylene glycol). Chain extension of the macroRAFT with VAc in water led to the block copolymer nanoscale organization and the subsequent formation of stable and isodisperse PVAc latex nanoparticles with high solids content (35–37 wt %). The influence of various parameters, including the nature and functionality of the macroRAFT agent precursor, on the polymerization kinetics and particle morphology was also studied.

No abstract

Chemiluminescence (CL) reactions have been widely employed and explored over the past 50 years because they offer unique light emission upon a defined chemical stimulus. In this Minireview, we focus on peroxyoxalate (PO) compounds because they feature very high quantum yields tuneable over the entire visible spectrum, allowing for visible‐light detection by the naked eye without the necessity for expensive analytical instruments. Although analytical methods have been extensively described, PO‐CL read‐out is a strongly emerging field with ample industrial potential. The state‐of‐the‐art PO‐CL detection read‐out systems for various key analytes is here explored. In particular, structural requirements, recent developments of PO‐CL read‐out probes and current limitations of selected examples are detailed. Furthermore, innovative approaches and synthetic routes to push the boundaries of PO‐CL reactions into biological systems are highlighted. Underpinned by recent contributions, we share perspectives on embedding PO‐CL molecules into polymeric materials, which they consider the next step in designing high performance solid‐phase read‐out systems.

Use of LAPONITE® clay platelets as Pickering stabilizers of vinylidene chloride-based latexes.

The peroxyoxalate chemiluminescence (PO-CL) reaction is among the most powerful and versatile techniques for the detection of hydrogen peroxide (H 2 O 2 ) and has been employed in various biological and chemical applications over the past 50 years. However, its twocomponent nature (peroxyoxalate and fluorophore) limits its use. This contribution introduces an innovative and versatile photochemical platform technology for the synthesis of inherently fluorescent PO probes by exploiting the nitrile imine-mediated tetrazole-ene cycloaddition (NITEC) reaction. In the presence of hydrogen peroxide, the p "2-in-1" emits either yellow or blue light -p g z ' ( z) visible to the naked eye. Even in the absence of base, the emitted light remains visible and H 2 O 2 could be detected in the nanomolar range. Critically, the Tz-PO can be readily incorporated into polymeric materials. As a first application of this promising material, a tailor-made Tz-PO is

A new method of additive-free particle synthesis facilitates the rapid preparation of inherently fluorescent microspheres via photoactive prepolymers.

We enable a new strategy for particle synthesis by utilizing modern synthetic, polymer and photochemical techniques to facilitate the synthesis of highly narrow-disperse multi-functional microspheres from visible-light induced crosslinking of pre-polymers in both a single and dual polymer system. The approach requires no stabilizers, bases or initiators, and proceeds at ambient temperature to yield microspheres with a tunable size range (0.25-5 μm) in less than 4 hours, depending largely on solvent composition, but also polymer concentration (2-10 mg mL-1), ratio and irradiation intensity (3-20 W). Critically, the visible-light induced dimerization reaction exploited herein enables simple functional particle syntheses via a simple single polymer system. Underpinned by an in-depth kinetic analysis of the particle formation as well as a detailed small molecule study, the mechanism for particle formation is also elucidated. Importantly, we exploit inherent advantages of the system for surface functionalization of residual acrylate and hydroxyl groups (generating inherently fluorescent particles). Highly narrow-disperse multi-functional particles with a tunable size range are prepared via visiblelight induced crosslinking of pre-functionalized polymers using a new photochemical platform technology. Proceeding rapidly in just hours at ambient temperature in the absence of any kind of additives such as stabilizers, bases or catalysts, the system provides powerful possibilities for highly advanced particle design.

We introduce degradable microparticles, synthesized from prepolymers in a precipitation-like polymerization. The narrow disperse particles are stabilized with continuous irradiation of green light and can be spontaneously degraded in the dark.