Phenothiazine double-photon photoacid initiator and preparation method thereof

Abstract

A dibenzothiazine two-photon acidic photoinitiator includes: having the dibenzothiazine as initial material, subsequently preparing the intermediate (I) N-alkyldibenzothiazine, (II) 3,7-bisformacyl-N-alkyldibenzothiazine and (III) 3,7-bis p-dialkylaminostyryl-N-alkyldibenzothiazine, finally synthesizing the target product by intermediate (III). The composition has a high stability and is a perfect two-photon acidic photoinitiator no matter being solution or film.

Description

Phenothiazine two-photon photoacid initiator and preparation method thereof 1. Technical field The invention relates to a photosensitive initiator for two-photon polymerization and a preparation method thereof, in particular to a two-photon photoacid initiator and a preparation method thereof, specifically a phenothiazine two-photon photoacid initiator and a preparation method thereof. 2. Background technology Organic materials with large two-photon absorption cross-sections have good application prospects in frequency upconversion lasers, optical clipping, photodynamic therapy, frequency upconversion fluorescence microscopy, three-dimensional optical information storage, and three-dimensional micromachining. aroused great interest of researchers. Among the many applications of two-photon technology, the use of photopolymerization induced by two-photon absorption for microfabrication to prepare optoelectronic integrated devices (such as photonic crystals, micro waveguide a...

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Problems solved by technology

However, its synthesis steps are many, the yield is low, and it is difficult to realize the application

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