Jump to main content
Jump to site search

Issue 19, 2012
Previous Article Next Article

Multi-photon in situ synthesis and patterning of polymer-embedded nanocrystals

Author affiliations

Abstract

The in situ synthesis and patterning of CdS nanocrystals in a polymer matrix is performed via multi-photon absorption. Quantum-sized CdS nanocrystals are obtained by irradiating a cadmium thiolate precursor dispersed in a transparent polymer matrix with a focused near infrared femtosecond laser beam. High resolution transmission electron microscopy evidences the formation of nanocrystals with wurtzite crystalline phase. Fluorescent, nanocomposite patterns with sub-micron spatial resolution are fabricated by scanning the laser beam on the polymer–precursor composite. Moreover, the emission energy of the CdS nanocrystals can be tuned in the range 2.5–2.7 eV, by changing the laser fluences in the range 0.10–0.45 J cm−2. This method enables therefore the synthesis of luminescent, CdS-based composites to be used within patterned nanophotonic and light-emitting devices.

Graphical abstract: Multi-photon in situ synthesis and patterning of polymer-embedded nanocrystals

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Dec 2011, accepted on 05 Mar 2012 and first published on 12 Apr 2012


Article type: Paper
DOI: 10.1039/C2JM16625A
Citation: J. Mater. Chem., 2012,22, 9787-9793
  •   Request permissions

    Multi-photon in situ synthesis and patterning of polymer-embedded nanocrystals

    A. Camposeo, M. Polo, A. A. R. Neves, D. Fragouli, L. Persano, S. Molle, A. M. Laera, E. Piscopiello, V. Resta, A. Athanassiou, R. Cingolani, L. Tapfer and D. Pisignano, J. Mater. Chem., 2012, 22, 9787
    DOI: 10.1039/C2JM16625A

Search articles by author

Spotlight

Advertisements