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Synthesis of Melamine‐Formaldehyde Microcapsules Containing Polyfluorene for Fluorescent Detection of Picric Acid in Aqueous Medium
Author(s) -
Pak Geun Tae,
Kim Hyunchul,
Lee Taek Seung
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12144
Subject(s) - picric acid , fluorescence , polyfluorene , aqueous solution , chemistry , melamine , detection limit , formaldehyde , fluorene , photochemistry , nuclear chemistry , poly(amidoamine) , polymer chemistry , chromatography , organic chemistry , dendrimer , conjugated system , polymer , physics , quantum mechanics , amidoamine
To detect nitroaromatic picric acid (PA) in water, polyfluorene (PF) encapsulated melamine‐formaldehyde microcapsules (PF@MFMs) were fabricated via in situ polymerizations. Because of the microcapsule structure, PF@MFMs were uniformly dispersed in water maintaining the blue fluorescence of PF in the capsules. The fluorescence intensity of PF@MFMs linearly decreased with increase in the PA concentrations with high limit of detection of 3.0 × 10 −6 M. The addition of other nitroaromatic derivatives, which had structure similar to PA, or various ions did not affect the fluorescence of PF@MFMs, showing high specificity of the microcapsules toward PA.