An Aqueous Route to Multicolor Photoluminescent Carbon Dots Using Silica Spheres as Carriers

Carbon lights up: A facile chemical method yields multicolor photoluminescent carbon dots derived from polymer/silica nanocomposites, which were prepared using surfactant‐modified silica spheres as carriers and resols (phenol/formaldehyde resins) as carbon precursor (see picture). The surface‐passiv...

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Published inAngewandte Chemie International Edition Vol. 48; no. 25; pp. 4598 - 4601
Main Authors Liu, Ruili, Wu, Dongqing, Liu, Shuhua, Koynov, Kaloian, Knoll, Wolfgang, Li, Qin
Format Journal Article
LanguageEnglish
Published Weinheim WILEY‐VCH Verlag 08.06.2009
Subjects
bioimaging
carbon
Luminescent Agents - chemistry
Microscopy, Confocal
nanoparticles
Nanoparticles - chemistry
Nanoparticles - ultrastructure
photoluminescence
Quantum Dots
Silicon Dioxide - chemistry
Spectrophotometry, Ultraviolet
Staining and Labeling
Water - chemistry
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Summary:Carbon lights up: A facile chemical method yields multicolor photoluminescent carbon dots derived from polymer/silica nanocomposites, which were prepared using surfactant‐modified silica spheres as carriers and resols (phenol/formaldehyde resins) as carbon precursor (see picture). The surface‐passivated carbon dots show good biocompatibility as potential bioimaging agents offering nanometer‐scale resolution. Carbon lights up: A facile chemical method yields multicolor photoluminescent carbon dots derived from polymer/silica nanocomposites, which were prepared using surfactant‐modified silica spheres as carriers and resols (phenol/formaldehyde resins) as carbon precursor (see picture). The surface‐passivated carbon dots show good biocompatibility as potential bioimaging agents offering nanometer‐scale resolution.
Bibliography:Published on the occasion of the 25th anniversary of the Max Planck Institute for Polymer Research, Mainz.
We thank Dr. Y. Zhang for the AFM characterization, K. Kirchhoff for the TEM characterization, and Prof. N. Heckenberg for the helpful discussions. R.L. and S.L. acknowledge Alexander von Humboldt (AvH) Fellowships. S.L. also thanks Singapore Millennium Foundation (SMF) for financial support. Q.L. is grateful to Dr. E.‐K. Sinner’s Bio‐lab at the Max Planck Institute for Polymer Research for hosting, the technical assistance from M. Droege, E. Conrad, and A. Arslan, and the partial support from Australian Research Council under DP0558727.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200900652