Synthesis and investigation of photonic properties of surface modified ZnO nanoparticles with imine linked receptor as coupling agent- for application in LEDs



Wet chemical precipitation route is developed for the synthesis of ZnO nanoparticles using a dipodal receptor as capping agent to control the size and shape of ZnO nanoparticles and also to passivate the surface defects. The capping of ZnO nanoparticles with dipodal receptor is characterized with NMR and IR spectroscopy. EDX analyses also confirmed the presence of organic receptors together with ZnO nanoparticles. The morphology and size of surface modified ZnO nanoparticles is checked by SEM, TEM and DLS spectroscopic techniques. The surface decorated ZnO nanoparticles demonstrate emission peak at 333 nm. The emission peak at 333 nm in case of surface capped ZnO demonstrate fewer surface defects present in comparison to their bulk counterpart, where blue, red, green, yellowish green emission peaks are present. The photophysical studies of ZnO nanoparticles are further carried in presence of metal ions where it is observed that the binding with Mn(II) result in increase in fluorescence intensity. The three fold increase in fluorescence intensity of ZnO nanoparticles in presence of Mn(II) can be utilized in case of lighting devices, where high quantum yield is desirable. To the best of our knowledge, this manuscript represents the first surface decorated ZnO nanoparticles for their application in lighting devices.


Dynamic Light Scattering Deep Level Emission Lighting Device Zinc Nitrate Hexahydrate Organic Receptor 



CN acknowledges support from the SAIF department, Panjab University for the TEM, FTIR, Mass spectroscopy facilities provided and CNSNT department, Panjab University for sample nanofabrication facility and Photophysical studies. CN also acknowledges support from IIT Ropar, for providing DLS, SEM and EDX facility.

Author contributions

The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interest.


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Centre for Nanoscience and Nanotechnology (UIEAST)Panjab UniversityChandigarhIndia
  2. 2.U.I.E.TPanjab UniversityChandigarhIndia
  3. 3.Department of ChemistryPanjab UniversityChandigarhIndia
  4. 4.Biomolecular Electronics and Nanotechnology Division (BEND)Central Scientific Instruments Organization (CSIO)ChandigarhIndia

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