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Proceedings Paper

Design, synthesis, and characterization of photoinitiators for two-photon polymerization
Author(s): Reece Whitby; Ryan MacMillan; Stefaan Janssens; Sebastiampillai Raymond; Dave Clarke; Andrew Kay; Jianyong Jin; Cather M. Simpson
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Paper Abstract

A series of dipolar and quadrupolar two-photon absorption (2PA) photoinitiators (PIs) based around the well-known triphenylamine (TPA) core and tricyanofuran (TCF) acceptors have been prepared for use in two-photon polymerisation (TPP). The synthesised dipolar species are designated as 5 and 7, and the remaining quadrupolar species are 6, 8, 9 and 10. Large two-photon absorption cross-sections (δ2PA) ranging between 333 - 507 GM were measured at 780 nm using the z-scan technique. Fluorescence quantum yields (ΦF) were below 3% across the series when compared to Rhodamine 6G as a reference standard. Finally, TPP tests were conducted on PIs 7 and 8 to assess their ability to initiate the polymerisation of acrylate monomers using an 800 nm femtosecond Ti:Sapphire laser system.

Paper Details

Date Published: 16 September 2016
PDF: 12 pages
Proc. SPIE 9920, Active Photonic Materials VIII, 992026 (16 September 2016); doi: 10.1117/12.2235832
Show Author Affiliations
Reece Whitby, Callaghan Innovation (New Zealand)
Ryan MacMillan, The Univ. of Auckland (New Zealand)
Stefaan Janssens, Callaghan Innovation (New Zealand)
Sebastiampillai Raymond, Callaghan Innovation (New Zealand)
Dave Clarke, Callaghan Innovation (New Zealand)
Andrew Kay, Callaghan Innovation (New Zealand)
Jianyong Jin, The Univ. of Auckland (New Zealand)
Cather M. Simpson, The Univ. of Auckland (New Zealand)


Published in SPIE Proceedings Vol. 9920:
Active Photonic Materials VIII
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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