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  Phenyl-Modified Carbon Nitride Quantum Dots with Distinct Photoluminescence Behavior

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.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-C74D-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-18D0-8
Genre: Journal Article

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 Creators:
Cui, Qianling, Author
Xu, Jingsan1, Author              
Wang, Xiaoyu, Author
Li, Lidong, Author
Antonietti, Markus2, Author              
Shalom, Menny1, Author              
Affiliations:
1Menny Shalom, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2205635              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: Kohlenstoffnitride, Kolloide Suspensionen, Fluoreszenz, Stokes-Verschiebung, Zellbildgebung
 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.

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 Dates: 2016-02-162016-03-07
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/anie.201511217
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Title: Angewandte Chemie International Edition
  Other : Angewandte Chemie, International Edition
  Abbreviation : Angew. Chem. Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 55 (11) Sequence Number: - Start / End Page: 3672 - 3676 Identifier: ISSN: 1433-7851