Engineering surface states of carbon dots to achieve controllable luminescence for solid-luminescent composites and sensitive Be2+ detection


Autoria(s): Li, Xiaoming; Zhang, Shengli; Kulinich, Sergei A.; Liu, Yanli; Zeng, Haibo
Data(s)

15/05/2014

Resumo

Luminescent carbon dots (L-CDs) with high quantum yield value (44.7%) and controllable emission wavelengths were prepared via a facile hydrothermal method. Importantly, the surface states of the materials could be engineered so that their photoluminescence was either excitation-dependent or distinctly independent. This was achieved by changing the density of amino-groups on the L-CD surface. The above materials were successfully used to prepare multicolor L-CDs/polymer composites, which exhibited blue, green, and even white luminescence. In addition, the excellent excitation-independent luminescence of L-CDs prepared at low temperature was tested for detecting various metal ions. As an example, the detection limit of toxic Be2+ ions, tested for the first time, was as low as μM.

Formato

application/pdf

Identificador

http://eprints.aston.ac.uk/26178/1/Engineering_surface_states_of_carbon_dots_to_achieve_controllable_luminescence_for_solid_luminescent_composites_and_sensitive_Be2_detection.pdf

Li, Xiaoming; Zhang, Shengli; Kulinich, Sergei A.; Liu, Yanli and Zeng, Haibo (2014). Engineering surface states of carbon dots to achieve controllable luminescence for solid-luminescent composites and sensitive Be2+ detection. Scientific Reports, 4 ,

Relação

http://eprints.aston.ac.uk/26178/

Tipo

Article

PeerReviewed