Two-photon absorption spectrum of the photoinitiator Lucirin TPO-L

Two-photon absorption induced polymerization provides a powerful method for the fabrication of intricate three-dimensional microstructures. Recently, Lucirin TPO-L was shown to be a photoinitiator with several advantageous properties for two-photon induced polymerization. Here we measure the two-pho...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2008-03, Vol.90 (4), p.633-636
Main Authors: Mendonca, C.R., Correa, D.S., Baldacchini, T., Tayalia, P., Mazur, E.
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Condensed Matter Physics
Exact sciences and technology
Machines
Manufacturing
Nanotechnology
Optical and Electronic Materials
Physicochemistry of polymers
Physics
Physics and Astronomy
Polymerization
Polymers and radiations
Processes
Surfaces and Interfaces
Thin Films
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Summary:Two-photon absorption induced polymerization provides a powerful method for the fabrication of intricate three-dimensional microstructures. Recently, Lucirin TPO-L was shown to be a photoinitiator with several advantageous properties for two-photon induced polymerization. Here we measure the two-photon absorption cross-section spectrum of Lucirin TPO-L, which presents a maximum of 1.2 GM at 610 nm. Despite its small two-photon absorption cross-section, it is possible to fabricate excellent microstructures by two-photon polymerization due to the high polymerization quantum yield of Lucirin TPO-L. These results indicate that optimization of the two-photon absorption cross-section is not the only material parameter to be considered when searching for new photoinitiators for microfabrication via two-photon absorption.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-007-4367-0