title: Encodable multiple-fluorescence CdTe@carbon nanoparticles from nanocrystal/colloidal crystal guest-host ensembles.
abstract: We report herein the controllable generation of encodable multi-fluorescence CdTe@carbon nanoparticles (CdTe@C NPs) via the pyrolysis of quantum dot/photonic crystal (QD/PC) guest-host ensembles. The precursors of CdTe/poly(styrene-co-glycidylmethacrylate) (PS-co-PGMA) QD/PC guest-host ensembles were initially formed via the assembly of epoxy groups of PCs and carboxyl groups on the surface of CdTe QDs, followed by a pyrolysis process to generate CdTe@C NPs. The as-prepared CdTe@C NPs not only integrate the optical properties for both the carbon and CdTe QD constituents, but also enable an impressive enhancement of the fluorescence lifetime for CdTe QDs. The multifarious fluorescent spectra coding for CdTe@C NPs was further generated through regulating the embedded sizes or concentrations of CdTe QDs and the excitation wavelength, and their applications in DNA detection and luminescent patterns were achieved.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing University of Technology, No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Guo
authors.forename: Cai-Feng
authors.initials: CF
authors.lastname: Wang
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Mao
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Zi-Yi
authors.initials: ZY
authors.lastname: Yu
authors.forename: Su
authors.initials: S
authors.lastname: Chen
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D005456:Fluorescent Dyes / Q000138:chemical synthesis*; D008163:Luminescent Measurements / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D045663:Quantum Dots; D013499:Surface Properties; D013691:Tellurium / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D005456:Fluorescent Dyes; D046911:Macromolecular Substances; D002244:Carbon; D013691:Tellurium; C028337:cadmium telluride