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Issue 3, 2009
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Photolytic formation of Ag nanoparticles in oligomeric organosiloxanes: new photolithographic routes to metallodielectric microperiodic structures

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Abstract

A single-step, room temperature photolithographic route to fabricate periodic metallodielectric microstructures is reported. Ag nanoparticles in organosiloxane sols were first generated through the well-established method of AgCl photoreduction. Evolution of the shape, size and distribution of Ag nanoparticles in the fluid sols upon irradiation with white light was characterised in detail through optical extinction spectroscopy and transmission electron microscopy. Ag nanoparticles were extremely stable in sols, which were subsequently processed into films, gels and monoliths. The application of these composites in the fabrication of optical gratings containing a uniform distribution of Ag nanoparticles was demonstrated through both photomask and interference lithographic techniques. This technique provides accessible routes to a range of metallodielectric microperiodic structures, which could enable experimental verification of theoretically predicted optical properties including enhanced photonic band gaps.

Graphical abstract: Photolytic formation of Ag nanoparticles in oligomeric organosiloxanes: new photolithographic routes to metallodielectric microperiodic structures

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Publication details

The article was received on 23 Jun 2008, accepted on 22 Sep 2008 and first published on 27 Nov 2008


Article type: Paper
DOI: 10.1039/B810566A
Citation: J. Mater. Chem., 2009,19, 373-378
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    Photolytic formation of Ag nanoparticles in oligomeric organosiloxanes: new photolithographic routes to metallodielectric microperiodic structures

    L. Qiu, J. Franc, A. Rewari, D. Blanc and K. Saravanamuttu, J. Mater. Chem., 2009, 19, 373
    DOI: 10.1039/B810566A

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