Photoreaction is a reaction which starts with light energy. It has a unique characteristic to give some product materials which are not the same as that of thermal reaction. Please refer to our technologies and facilities of photoreaction.
Photoreaction
Photoreaction is a reaction which starts with light energy. It has a unique characteristic to give some product materials which are not the same as that of thermal reaction.
High-pressure mercury-vapor lump is used as a light source and the temperature is controlled by water-cooling.
We possess several facilities with 8kW light source in Harima plant and each facility is able to perform the reaction of tens liters.
In addition, lab-scale synthesis can be performed with 100W and 400W of high-pressure mercury-vapor lumps at the chemical laboratory.
Further, we have performed flow reaction with FEP tube as well as general batch reaction.
Facilities
1. Production facilities (Harima plant)
・Light source : 8kW high-pressure mercury-vapor lump
・Filter : PYREX ®
・Stirring system : non-active gas bubbling, reaction liquid circulation
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari04.jpg)
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari05.jpg)
2. Lab-scale (Chemical laboratory)
・Light source : 100/400W high-pressure mercury-vapor lump
・Filter : PYREX ®, quartz
・Stirring system : non-active gas bubbling, magnetic stirring
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari03.jpg)
3. Flow reactor (Chemical laboratory)
・Light source : 400W high-pressure mercury-vapor lump
・Filter : PYREX ®, quartz
・Channel : FEP tube (inner diameter: up to 1.2mm)
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari02.jpg)
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari01.jpg)
Reaction example
[2+2] Photocyclization
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari_img01.png)
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari_img02.png)
Vitamin D3
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/04/hikari_img03.png)
Benzopinacol
![](https://specchem-wako.fujifilm.com/us/cms_admin/wp-content/uploads/2020/03/hikari_img04.png)
We are able to perform various synthesis with photoreaction.