One-step hydrothermal synthesis of fluorescent nanocrystalline cellulose/carbon dot hydrogels. (1st November 2017)

• Record Type: Journal Article
• Authors: Li, Wei; Wang, Sichun; Li, Ying; Ma, Chunhui; Huang, Zhanhua; Wang, Chunsheng; Li, Jian; Chen, Zhijun; Liu, Shouxin
• Is Part Of: Carbohydrate polymers. Volume 175(2017)
• Page Start: 7
• Page End: 17
• Publication Date: 2017-11-01
• Subjects: Nanocrystalline cellulose -- Hydrogels -- Fluorescence -- Hydrothermal; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.07.062
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: NCC/CDs hydrogels were prepared by a one-step green hydrothermal carbonization method. High crystallinity and thermal stability NCC/CDs hydrogels were obtained by controlling the hydrothermal temperature. NCC/CDs hydrogels exhibited excellent fluorescence stability at various pH values. Abstract: Fluorescent nanocrystalline cellulose/carbon dots (NCC/CDs) hydrogels were successfully prepared by a facile one-step green hydrothermal carbonization process. The properties of NCC/CDs hydrogels prepared at different temperatures were investigated by fluorescence spectroscopy, transmission electron microscopy, nuclear magnetic resonance spectroscopy, X-ray diffraction, and thermogravimetric analysis. NCC/CDs hydrogels with high crystallinity, high thermal stability, and excellent fluorescence properties can be obtained by controlling the hydrothermal treatment temperature. Small rod-like NCC/CDs hydrogels with a diameter of 2–6 nm, a length of 40–60 nm, and the cellulose Ι structure were obtained when the hydrothermal carbonization temperature was 240 °C. The NCC/CDs hydrogels exhibited an excellent broad spectral response and high fluorescence stability at various pH values. Considering of the wide natural abundance of NCC and the biocompatibility of the NCC/CDs hydrogels, Preparation in this simple, green approach is attractive for future bio-medical applications.