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Phenothiazine double-photon photoacid initiator and preparation method thereof

A phenothiazine and initiator technology, applied in the field of photoinitiator and its preparation, can solve the problems of low yield, many synthesis steps, difficult application and the like, and achieve the effects of reducing reaction steps, simple synthesis method and optimizing properties

Inactive Publication Date: 2007-09-19
ANHUI UNIVERSITY
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  • Claims
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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

Method used

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  • Phenothiazine double-photon photoacid initiator and preparation method thereof
  • Phenothiazine double-photon photoacid initiator and preparation method thereof
  • Phenothiazine double-photon photoacid initiator and preparation method thereof

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Embodiment Construction

[0021] with R 1 , R 2 All are ethyl, and R is hexyl as an example, and the non-limiting examples are described as follows:

[0022] 1. Preparation of intermediate (I)

[0023] Weigh 19.9g (0.1mol) of phenothiazine and dissolve it in 100mL of acetone, stir to dissolve at 50°C, add 8.4g (0.15mol) of finely ground KOH and 3 drops of Aliquit-336, and react for 1.5h, the solution turns black. Then 18.6 mL (0.13 mol) of 1-bromo-n-hexane was added dropwise, and refluxed at 100° C. for 48 h. Evaporate most of the solvent, pour into a large amount of cold water, stir, and use CH 2 Cl 2 Extraction, anhydrous MgSO 4 After drying, filtering, and concentrating, petroleum ether was used as a developing solvent, and 18.4 g of a bright yellow liquid was obtained through silica gel column separation, with a yield of 65%. That is the intermediate (I)-N-n-hexylphenothiazine

[0024] 2. Preparation of intermediate (II)

[0025] Add 10.22g DMF (10.7Ml, 0.14mol) into a 250mL dry round botto...

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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

1. Technical field [0001] 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 [0002] 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 arrays, etc.) has attracted much attention. [0003] The core ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D279/18G03F7/004
Inventor 田玉鹏周虹屏金葆康杨家祥张胜义吴杰颖马文胡张军
Owner ANHUI UNIVERSITY
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