Gelling agent, a liquid crystal gel comprising the same, and a liquid crystal device comprising the liquid crystal gel

A liquid crystal gel comprising a gelling agent represented by the following Chemical Formula 2 and a liquid crystal material:

• wherein,
• R1 and R2 are independently a C1˜C30 alkyl, a C1˜C30 alkoxy, —H, —OH, or a halogen;
• Q1 to Q4 are independently —H, —F, or —CH3;
• Y is —C(═O)NR3— or —NR3C(═O)—;
• X is phenylene, cyclohexylene, —(CE2)p-, —(CE2)pL-, —(CE2)pL(CJ2)q-, or —(CE2)pL(CJ2)qL-,
• wherein L is —O—, —NR3—, —C═C—, or —C≡C—, E2 and J2 are independently H2 or oxygen (O), and p and q are independently an integer of 0 to 20;
• R3 and R4 are independently —H or a C1˜C30 alkyl;
• G1 and G2 are independently V,
• V is —W1, —OW1, —F, —Cl, —Br, —I, —CN, —CF3, or —OCF3;
• W1, W2, and the following W3, W4, and W5 are independently —H, a C1˜C30 alkyl unsubstituted or substituted by fluorine, a C2˜C30 alkenyl unsubstituted or substituted by fluorine, a C2˜C30 alkynyl unsubstituted or substituted by fluorine, —(CH2CH2O)tCH3, —(CH2CHCH3O)tCH3, or —(CHCH3CH2O)tCH3, and t is an integer of 1 to 5;
• L1, L2, L3, and L4 are independently selected from —(CH2)rSiW3W4(CH2)s—, —(CH2)rO(CH2)s—, —(CH2)rNW3(CH2)s—, —(CH2)rS(CH2)s—, —(CH2)rSO(CH2)s—, —(CH2)rSO(CH2)s—, —(CH2)r—, —CH═CH—, —C≡C—, —C(═O)O(CH2)r—, —OC(═O)(CH2)r—, —(CH2)rC(═O)O—, —(CH2)rOC(═O)—, —C(═O)—, —C(═O)NW3—, —NW3C(═O)—, —C(═O)S—, and —SC(═O)—, and r and s are independently an integer of 0 to 10;
• a, b, c, and d are an integer of 0 to 2;
• and
• ring A, ring B, ring C, and ring D are independently a C5˜C20 cycloalkylene, a C5˜C20 heterocycloalkylene, a C6˜C20 arylene, or a C6˜C20 heteroarylene, and each ring is unsubstituted or substituted by —W5, —OW5, —F, —Cl, —Br, —I, —CN, —CF3, —OCF3, —C(═O)W5, —OC(═O)W5, or —C(═O)OW5.