JPS56110778A - Photochromic material - Google Patents
Photochromic materialInfo
- Publication number
- JPS56110778A JPS56110778A JP1362580A JP1362580A JPS56110778A JP S56110778 A JPS56110778 A JP S56110778A JP 1362580 A JP1362580 A JP 1362580A JP 1362580 A JP1362580 A JP 1362580A JP S56110778 A JPS56110778 A JP S56110778A
- Authority
- JP
- Japan
- Prior art keywords
- compd
- viologen
- formula
- light irradiation
- photochromic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Pyridine Compounds (AREA)
Abstract
PURPOSE: To provide a photochromic material which efficiently produces a cationic radical by light irradiation, containing a specified viologen compd. as the main component.
CONSTITUTION: There is provided a photochromic material contg. a viologen compd. of formula I (wherein R is 1W6C alkyl; X is halogen; n is 1W12), water, alcohol and an acid (as a catalyst). The colorless viologen compd. of the formula I produces the reduced colored cationic radical of formula II by electron transfer caused by the excitation due to light irradiation, and is made soluble in a medium due to its ammonia structure. Thus, the compd. is not deposited even during coloring. The coloring and the decoloring of the compd. proceed much easier than those of conventional viologen compd. The formation of the cationic radical by light irradiation can efficiently be conducted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1362580A JPS56110778A (en) | 1980-02-08 | 1980-02-08 | Photochromic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1362580A JPS56110778A (en) | 1980-02-08 | 1980-02-08 | Photochromic material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56110778A true JPS56110778A (en) | 1981-09-02 |
Family
ID=11838410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1362580A Pending JPS56110778A (en) | 1980-02-08 | 1980-02-08 | Photochromic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56110778A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037034A3 (en) * | 1999-11-03 | 2002-07-18 | Steven A Carlson | Optical shutter |
-
1980
- 1980-02-08 JP JP1362580A patent/JPS56110778A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037034A3 (en) * | 1999-11-03 | 2002-07-18 | Steven A Carlson | Optical shutter |
AU772671B2 (en) * | 1999-11-03 | 2004-05-06 | Optodot Corporation | Optical shutter |
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