abstract |
R 1 —(A 1 ) m —Z 1 —A 2 —(Z 2 —A 3 ) n —W—SiX a Y b Z c I n n n in which n R 1 , A 1 , A 2 , A 3 , Z 1 , R 1 , Z 2 , W, X, Y, Z, m, n, a, b and c are as defined below, can be used to produce homeotropic alignment of liquid-crystalline phases on surfaces. |