Thermally conductive material, device with thermally conductive layer, composition for forming thermally conductive material, and disk-like liquid crystal compound

A composition for forming a thermally conductive material, comprising;

• a disk-like compound having one or more reactive functional groups selected from the group consisting of a hydroxyl group, a carboxylic acid group, a carboxylic acid anhydride group, an amino group, a cyanate ester group, and a thiol group;
• a crosslinking compound having a group reacting with the reactive functional groups, and
• an inorganic substance,
• wherein in a case where the disk-like compound has a central ring that is a triphenylene ring, each of the reactive functional groups is a group selected from the group consisting of a hydroxyl group, a carboxylic acid group, a carboxylic acid anhydride group, an amino group, and a cyanate ester group,
• the crosslinking compound is an epoxy compound, which is a compound represented by Formula (E1),
• in Formula (E1), LE1's each independently represent a single bond or a divalent linking group, which is selected from the group consisting of —O—, —S—, —C(═O)—, —NH— —CH═CH—, —C≡C—, —CH═N—, —N═CH—, —N═N—, an alkylene group which may have a substituent, or a group obtained by combining two or more groups among the above,
• LE2's each independently represent a single bond, —CH═CH—, —C(═O)—O—, —O—C(═O)—, —C(—CH3)═CH—, —CH═C(—CH3)—, —CH═N—, —N═CH—, —N═N—, —CC—, —N═N+(—O−)—, —N+(—O−)═N—, —CH═N+(—O−)—, —N+(—O−)═CH—, —CH═CH—C(═O)—, —C(═O)—CH═CH—, —CH═C(—CN)—, or —C(—CN)═CH—,
• LE3 represents a 5-membered or 6-membered aromatic ring group which may have a substituent, or a 5-membered or 6-membered non-aromatic ring group which may have a substituent,
• pe represents an integer equal to or greater than 0,
• in a case where pe is an integer equal to or greater than 2, a plurality of groups represented by (-LE3-LE2-) may be the same as or different from each other,
• LE4's each independently represent a substituent,
• le's each independently represent an integer of 0 to 4, and
• in a case where le is an integer equal to or greater than 2, a plurality of LE4's may be the same as or different from each other.

A disk-like liquid crystal compound that is a compound represented by Formula (D16),

• in Formula (D16), A2X, A3X, and A4X each independently represent —CH═ or —N═,
• R17X, R18X, and R19X each independently represent *—X211X—(Z21X—X212X)n21X-L21X-Q,
• * represents a position of binding to a central ring,
• X211X and X212X each independently represent a single bond, —O—, —C(═O)—, —NH—, —OC(═O)—, —OC(═O)O—, —OC(═O)NH—, —OC(═O)S—, —C(═O)O—, —C(═O)NH—, —C(═O)S—, —NHC(═O)—, —NHC(═O)O—, —NHC(═O)NH—, —NHC(═O)S—, —S—, —SC(═O)—, —SC(═O)O—, —SC(═O)NH—, or —SC(═O)S—,
• Z21X's each independently represent a 5-membered or 6-membered aromatic ring group or a 5-membered or 6-membered non-aromatic ring group,
• L21X represents a single bond or a divalent linking group,
• Q's each independently represent a hydrogen atom or a substituent,
• one or more Q's represent reactive functional groups selected from a cyanate ester group,
• n21X represents an integer of 0 to 3, and
• in a case where n21X is equal to or greater than 2, a plurality of groups represented by (Z21X—X212X) may be the same as or different from each other.