Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 1, Issue 9, Pages 1160-1164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/sc400074e
Keywords
Cellulose nanoctystals (CNC); 7-Hydrazino-4-methylcoumarin; 7-Amino-4-methylcoumarin; One-step synthesis; Fluorescent-tagged CNC
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Funding
- Fonds de recherche sur la nature et les technologies Quebec
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Fluorescent rod-shaped nanoparticles were prepared by attaching hydrazine- or amino-substituted fluorophores onto cellulose nanocrystals (CNC) to form hydrazone and Schiff-base compounds. The products 7-hydrazino-4-methylcoumarin (HMC) CNC and 7-amino-4-methylcoumarin (AMC)-CNC were examined by ATR-IR, solid-state NMR, ultraviolet visible absorbance, fluorescence spectroscopy, AFM, TEM, wide-angle KRD, elemental analysis, and X-ray photoelectron spectroscopy (XPS). Estimates of the amount of dye attached to the nanocrystals suggested that substitution was not confined to the reducing end of the nanocrystals. This provides a new route to fluorescent-tagged CNC in an aqueous one-step reaction.
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