Two-photon Absorption And Polymerization Ability Of Intramolecular Energy Transfer Based Photoinitiating Systems

摘要

We design a new photoinitiating system where the two-photon absorption of a 2,7 bisaminofluorene moiety leads to the photo-activation of a camphorquinone subunit through a Forster-type intramolecular energy transfer: the application to a two-photon polymerization reaction is demonstrated.rnThe potential and promising applications of multi-photon absorption spectroscopy in high density optical data storage, 3D micro-nanofabrication, power limiting, fluorescence microscopy, photodynamic therapy has strongly stimulated the research for the elaboration of modular architectural macrosystems combining both large two-photon absorption 2PA cross sections (δ) and desired photo activated properties. In the case of applications involving a two-photon initiated polymerization reaction, the introduction of an efficient photoinitiator PI is necessary.