Compounds of formula (3) to stabilize liquid crystal domains

A compound having formula (3) ##STR1##

wherein:

• D3 is an electron donor moiety;
• C3 is a conjugated bridging moiety;
• A3 is an electron acceptor moiety;
• S3 is a hydrocarbon, a heterocyclic moiety, or a hetero-acyclic moiety; and
• b is an integer.