Answers are grounded in this paper and cite their sources.
This research demonstrates a fluorescent sensor for pH detection in acidic environments, suggesting novel applications for block copolymers.
An amphiphilic block copolymer, poly(ethylene glycol)‐ b ‐poly( N ‐vinyl carbazole), functionalized with a 1,8‐naphthalimide fluorescent signaling moiety containing a pH‐responsive piperazinyl recognition unit (PEG‐ b ‐PVK‐ co ‐PNA), was synthesized via reversible addition‐fragmentation chain transfer polymerization. The block copolymer demonstrates a low molar mass dispersity and spontaneously self‐assembles into uniform nanoparticles in aqueous media, serving as a fluorescent sensor for detecting hydrogen ion. The emission from the PVK block is effectively quenched, whereas the 1,8‐naphthalimide moiety exhibits a pronounced fluorescence enhancement at 505 nm due to Förster resonance energy transfer between the PVK donor and the 1,8‐naphthalimide acceptor in the copolymer nanoparticles. The photoluminescence intensity at 505 nm displays a linear correlation with decreasing pH values in the range 3.0–6.5 for the copolymer nanoparticles in acidic medium, highlighting the block copolymer's potential for quantitative pH sensing in acidic environments.
No takes yet. Share an insight, caveat, or question.
Kong et al. (2025) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: