The present invention relates to a method of, and composition for, including anionic photoinitiator compound, it uses them has the structure of formula (I).; Formula (I); Wherein, X and Y are independently a direct single bond and -C (= O) - as independently selected from the group consisting of (wherein at least one of X and Y is -C (= O) - Im),; R 1 and R 2 are H and are independently selected from the group consisting of substituted phenyl (wherein, R 1 and R 2 are not both H),; -XR 1 and -YR 2 is not -C (= O) H.; Anionic photoinitiators having a polymerizable or crosslinkable monomer, oligomer, or crosslinking property even if being kept with the polymer species improved without any loss of light-sensitive storage stability.
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