Simultaneous photoinduced color formation and polymerization: The formation of highly colored thin films from colorless precursors due to formation of triarylmethane cations by acid generating decomposition of iodonium salts

Macromolecules

Volumn 29, Issue 11, 1996, Pages 3751-3757

  Ren, Yijin ^a   Jager, Wolter F ^a   Necker, Douglas C ^a  

^a BOWLING GREEN STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; COLOR; DECOMPOSITION; IONS; IRRADIATION; PHOTOCHEMICAL REACTIONS; PIGMENTS; POLYMERIZATION; PYROLYSIS; SALTS; THIN FILMS;

ACID GENERATING DECOMPOSITION; CATIONS; CRYSTAL VIOLET LACTONE; IODONIUM SALTS; PHOTOINDUCED COLOR FORMATION; PHOTOINITIATOR; TRIARYLMETHANE;

POLYMERS;

EID: 0030148443     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9518722     Document Type: Article

References (27)

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21. -4% acetic acid.
22. Crystal violet equals the open colored form of crystal violet lactone minus the carboxylic acid functionality (see Scheme 3).
23. Note that in the mechanism in Scheme 4 protonation of CVL takes place in two steps: electron abstraction followed by the addition of a hydrogen atom.
24. Ren, Y; Jager, W. F.; Neckers, D. C. To be published.
25. This is no surprise; photopolymerizations of acrylates are known to be much faster than photopolymerization of epoxides.
26. For the dye precursors 3-9, HBRD was used with the photoinitiators UVI-6974 and DAROCUR 4265; see Experimental Section.
27. Strongly absorbing black films cannot be generated with the black dye prcursor 4. The color developed with 4 is a dark green instead of black, due to a hole in the absorption spectrum at 500 nm.