English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Phenyl-Modified Carbon Nitride Quantum Dots with Distinct Photoluminescence Behavior

MPS-Authors
/persons/resource/persons136175

Xu,  Jingsan
Menny Shalom, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons1057

Antonietti,  Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons121860

Shalom,  Menny
Menny Shalom, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
Citation

Cui, Q., Xu, J., Wang, X., Li, L., Antonietti, M., & Shalom, M. (2016). Phenyl-Modified Carbon Nitride Quantum Dots with Distinct Photoluminescence Behavior. Angewandte Chemie International Edition, 55(11), 3672-3676. doi:10.1002/anie.201511217.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-C74D-2
Abstract
A novel type of quantum dot (Ph-CN) is manufactured from graphitic carbon nitride by “lining” the carbon nitride structure with phenyl groups through supramolecular preorganization. This approach requires no chemical etching or hydrothermal treatments like other competing nanoparticle syntheses and is easy and safe to use. The Ph-CN nanoparticles exhibit bright, tunable fluorescence, with a high quantum yield of 48.4 % in aqueous colloidal suspensions. Interestingly, the observed Stokes shift of approximately 200 nm is higher than the maximum values reported for carbon nitride based fluorophores. The high quantum yield and the large Stokes shift are related to the structural surface organization of the phenyl groups, which affects the π-electron delocalization in the conjugated carbon nitride networks and induces colloidal stability. The remarkable performance of the Ph-CN nanoparticles in imaging is demonstrated by a simple incubation study with HeLa cells.