TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The mesogenic groups are calamitic groups and comprising more saturated rings than unsaturated or aromatic rings. The bridging group consists of subgroups from pi -conjugated linear, aromatic or heteroaromatic groups. The bridging group is connected in axial position to a cyclohexylene or silane ring comprised in the mesogenic group which is optionally substituted and where non-adjacent carbon-atom(s) are optionally replaced by silicon and/or non-adjacent CH2 group(s) optionally replaced by oxygen and/or sulfur. The non-polymerizable compounds are of formula (I). The bridging group or (B)q in (I) is -CC-, -CC-CC-, -CC-CC-CC-, -CC-CC-CC-CC-, or one or more of 10 compounds of formula (III). The bridging group attached to U1 and U2 is one or more of 5 compounds, e.g. formula (IV). The mesogenic groups do not comprise more than one unsaturated or aromatic ring. The linkage group connecting the aromatic, or non-aromatic cyclic group in mesogenic group or Z1-Z4 is O, S, C(O), C(O)O, OC(O), OC(O)O, C(O)NR0, NR0C(O), NR0C(O)NR0, OCH2, CH2O, SCH2, CH2S, CF2O, OCF2, CF2S, SCF2, CH2CH2, (CH2)3, (CH2)4, CF2CH2, CH2CF2, CF2CF2, CH=CH, CY1=CY2, CH=N, N=CH, N=N, CH=CR0, C triple bond C, CH=CHC(O)O, OC(O)CH=CH, CR0R00 or a bond. The non-polymerizable compounds are one or more of 22 compounds, e.g. formula (V) or one or more of 24 compounds, e.g. formula (VI).U1-U2=one or more of 3 compounds, e.g. formula (II) or its mirror image;Q1-Q2=CH or SiH;Q3=C or Si;B=C triple bond C, CY1=CY2 or (hetero)aromatic (optionally substituted);Y1-Y2=H, F, Cl, CN or R0;A1-A4=non-aromatic carbocycle or heterocycle (optionally substituted by R5), aromatic or heteroaromatic (optionally substituted by R5);Z, Z1-Z4=O, S, C(O), C(O)O, OC(O), OC(O)O, C(O)NR0, NR0C(O), NR0C(O)NR0, OCH2, CH2O, SCH2, CH2S, CF2O, OCF2, CF2S, SCF2, CH2CH2, (CH2)3, (CH2)4, CF2CH2, CH2CF2, CF2CF2, CH=CH, CY1=CY2, CH=N, N=CH, N=N, CH=CR0, C triple bond C, CH=CHC(O)O, OC(O)CH=CH, CR0R00 or a bond;R0, R00=H or 1-12C alkyl;R, R1-R5=H, halo, CN, NC, NCO, NCS, OCN, SCN, C(O)NR0R00, C(O)X0, C(O)R0, NH2, NR0R00, SH, SR0, SO3H, SO2R0, OH, NO2, CF3, SF5, optionally substituted silyl, 1-40C carbyl (optionally substituted) or 1-40C hydrocarbyl;L=P-Sp, F, CI, Br, I, CN, NO2 , NCO, NCS, OCN, SCN, C(O)NR0R00, C(O)X, C(O)OR0, C(O)R0, NR0R00, OH, SF5, optionally substituted silyl, 1-12C (preferably 1-6C) aryl, straight or branched chain 1-12C alkyl, 1-12C alkoxy, 1-12C alkylcarbonyl, 1-12C alkoxycarbonyl, 1-12C alkylcarbonyloxy, 1-12C (preferably 1-6C) alkocycarbonyloxy (optionally replaced by F or Cl);X=halo;m-r=0-4; andq=1-10 (preferably 1-6).Provided that U1 or U2 is bonded to (B)q via the axial bond or CH2 group(s) which are optionally replaced by oxygen and/or sulfur; and (A1-Z1)m-U1-(Z2-A2)n or (A3-Z3)o-U2-(Z4-A4)p does not contain more aromatic groups than non-aromatic groups Preferred Definitions:    A1-A4=trans-1,4-cyclohexylene or 1,4-phenylene (optionally substituted by L);and    q=1-6.    EXAMPLE - Phenyl derivative of formula (VI) (0.21 g) was dissolved in ZL14792 (RTM: liquid crystal mixture, 0.799 g), and heated to obtain homogeneous mixture. The prepared mixture was placed to a parallel rubbed test cell, and evaluated. Results showed a R450/R550 of 0.99 where R450 which is optical axis retardation of 450 nm and R550 which is optical axis retardation of 550 nm.