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Synthesis and Photophysical Behavior of Pyrene‐Bearing Cellulose Nanocrystals for Fe 3+ Sensing
Author(s) -
Zhang Lingzhi,
Li Qian,
Zhou Jinping,
Zhang Lina
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200233
Subject(s) - pyrene , cellulose , nanomaterials , nanocrystal , selectivity , fluorescence , metal ions in aqueous solution , metal , chemistry , nanoparticle , photochemistry , ion , materials science , polymer chemistry , inorganic chemistry , nanotechnology , organic chemistry , catalysis , physics , quantum mechanics
Cellulose nanocrystals are converted into fluorescent labeling nanoparticles (Py‐CNC) by a three‐step procedure. The fluorescence emission of pyrene is enhanced after the modification to cellulose nanocrystals. Py‐CNC is evaluated for its sensing ability towards metal ions and exhibits high selectivity towards Fe 3+ among other screened metal ions with good discrimination between Fe 2+ and Fe 3+ . The excellent selectivity for Fe 3+ over a wide linear concentration range is observed through changes in the emission spectra. Spectroscopic analyses prove that the coordination interaction between Fe 3+ and pyrene‐modified cellulose nanocrystals leads to the recognition process. This sensing nanomaterial can be employed as a chemosensor for Fe 3+ and promoted for many applications in chemical, environmental, and biological systems.