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This article describes the synthesis and application of a novel sorbent for Cr(III) and Cr(VI) speciation prior to their quantitation by inductively coupled plasma mass spectrometry. The sorbent consists of polystyrene-divinyl benzene microbeads that were graft-coated with poly(oligo (ethylene glycol) methacrylate)-block-poly(glycidyl methacrylate). The particles were finally modified with phosphomethylated...
Crosslinked 2-bromoethyl methacrylate polymer (PBEMA) was prepared in micro-spherical form (2–5µm) by precipitation polymerization methodology. The bromide substituent was substituted with an azide group, which was then coupled with 1-[(2-Propynyloxy)methyl]pyrene] via alkyne-azide click chemistry. The pyrene-linked microspheres showed an intense green-blue excimer emission with a maximum at 480nm,...
Polymer microbeads consisting of 20% 2‐hydroxyethyl methacrylate (HEMA), 70% methyl methacrylate (MMA), and 10% ethylene glycol dimethacrylate (EGDMA) were methane sulfonated (mesylated) using equivalent methane sulfonyl chloride‐pyridine. The methane sulfonate surface groups generated were employed as cationic initiation sites for surface initiated polymerization (SIP) of 2‐methyl 2‐oxazoline. The...
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