Analytical and bioanalytical applications of carbon dots

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Joaquim C. G. Esteves da Silva (Autor) FCUP; Helena M. R. Gonçalves (Autor) FCUP

Revista

Título: TrAC - Trends in Analytical Chemistry

Vol. 30 Nº 8

Páginas: 1327-1336

ISSN: 0165-9936

Editora: Elsevier

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

Abstract (EN): Carbon dots (CDs) comprise a recently discovered class of strongly fluorescent, emission-color-tuning and non-blinking nanoparticles with great analytical and bioanalytical potential. Raw CDs can be obtained by laser ablation or electrochemical exfoliation of graphite, from soot, or thermal carbonization, acid dehydration or ultrasonic treatment of molecular precursors. Passivation of raw CDs makes them fluorescent and their functionalization confers reactivity towards selected targets. CDs can be excited by single-photon (ultraviolet or near-ultraviolet) and multi-photon (red or near-infrared) excitation, and their luminescence properties are due to surface defects. CDs are being proposed as bioimaging probes because they comprise non-toxic elements and are biocompatible. Passivated and functionalized CDs can be made to sense pH, metal ions and molecular substances.

Idioma: Inglês

Tipo (Avaliação Docente): Científica