Provided is a compound of Formula (I):

##STR00001## wherein the variable groups are defined herein.

Provided is a compound of Formula (I):

##STR00001## wherein the variable groups are defined herein.

The invention relates to bimesogenic compounds of formula I ##STR00001##
wherein R.sup.11, R.sup.12, MG.sup.11, MG.sup.12, X.sup.11, X.sup.12 and Sp.sup.1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula l in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.

The invention relates to bimesogenic compounds of formula I ##STR00001##
wherein R.sup.11, R.sup.12, MG.sup.11, MG.sup.12, X.sup.11, X.sup.12 and Sp.sup.1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula l in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.

Provided is a compound of Formula (I): ##STR00001## wherein the variable groups are defined herein.

Provided is a compound of Formula (I): ##STR00001## wherein the variable groups are defined herein.

Provided is an -aminoalkylphenone compound that has good stability and low sublimability, efficiently generates radicals when irradiated with a bright line at 365 nm (I line) or the like, and is useful as a polymerization initiator to be used in a radically polymerizable composition. The -aminoalkylphenone compound is represented by Formula (I) mentioned below. ##STR00001##
In Formula (I) mentioned above, it is preferable that R.sup.11 is a nitro group, an alkoxy group having 1 to 12 carbon atoms, or an alkoxycarbonyl group having 1 to 12 carbon atoms. The -aminoalkylphenone compound can be preferably used in a polymerization initiator.

Provided is an -aminoalkylphenone compound that has good stability and low sublimability, efficiently generates radicals when irradiated with a bright line at 365 nm (I line) or the like, and is useful as a polymerization initiator to be used in a radically polymerizable composition. The -aminoalkylphenone compound is represented by Formula (I) mentioned below. ##STR00001##
In Formula (I) mentioned above, it is preferable that R.sup.11 is a nitro group, an alkoxy group having 1 to 12 carbon atoms, or an alkoxycarbonyl group having 1 to 12 carbon atoms. The -aminoalkylphenone compound can be preferably used in a polymerization initiator.

Provided is a compound of Formula (I):

##STR00001## wherein the variable groups are defined herein.

Provided is a compound of Formula (I):

##STR00001## wherein the variable groups are defined herein.