title: Preparation of carbon quantum dots based on starch and their spectral properties.
abstract: A simple method for the synthesis of water-soluble carbon quantum dots (CQDs) has been developed based on chemical oxidation of starch. The structures and optical properties of the CQDs were characterized by ultraviolet-visible (UV-Vis) spectroscopy, photoluminescence spectroscopy (PL) and transmission electron microscopy. The CQDs were found to emit bright blue fluorescence and disperse uniformly. The effects of ambient temperature, light and pH on the properties of CQDs were studied. The CQDs exhibited good chemical stability, good photostability and pH sensitivity. Furthermore, the interaction between CQDs and bovine serum albumin (BSA) was investigated.
authors.affiliation: Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, China.
authors.forename: Zhengyu
authors.initials: Z
authors.lastname: Yan
authors.forename: Juan
authors.initials: J
authors.lastname: Shu
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.forename: Zhengwei
authors.initials: Z
authors.lastname: Zhang
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.forename: Jianqiu
authors.initials: J
authors.lastname: Chen
mesh_terms: D002244:Carbon / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D049449:Luminescence; D046529:Microscopy, Electron, Transmission; D045663:Quantum Dots / Q000737:chemistry*; D012710:Serum Albumin, Bovine / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013213:Starch / Q000737:chemistry*; D013696:Temperature
chemical_list: D012710:Serum Albumin, Bovine; D002244:Carbon; D013213:Starch
keywords: BSA; carbon quantum dots; characterization; chemical oxidation; spectral properties; starch