Patent ID: 11899316
Assignee: NAGAOKA UNIVERSITY OF TECHNOLOGY
Field: Optics (Instruments)
Classification: CPC G  C | IPC G

Claim 5:
6. The terahertz wave control element according to claim 5, wherein the photoreactive polymer comprises any one photoreactive side chain selected from the group consisting of the following formulae (1) to (6):, wherein A, B, and D each independently represents a single bond, —O—, —CH2—, —COO—, —OCO—, —CONH—, —NH—CO—, —CH═CH—CO—O—, or —O—CO—CH═CH—;
S represents an alkylene group having 1 to 12 carbon atoms, wherein a hydrogen atom bonded thereto may be replaced with a halogen group;
T represents a single bond or an alkylene group having 1 to 12 carbon atoms, wherein a hydrogen atom bonded thereto may be replaced with a halogen group;
Y1 represents a ring selected from a monovalent benzene ring, a monovalent naphthalene ring, a monovalent biphenyl ring, a monovalent furan ring, a monovalent pyrrole ring and a monovalent alicyclic hydrocarbon having 5 to 8 carbon atoms, or a group in which the same or different two to six rings selected therefrom are bonded through a bonding group B, wherein a hydrogen atom bonded thereto may be each independently replaced with —COOR0 (wherein R0 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), —NO2, —CN, —CH═C(CN)2, —CH═CH—CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
Y2 represents a group selected from the group consisting of a bivalent benzene ring, a bivalent naphthalene ring, a bivalent biphenyl ring, a bivalent furan ring, a bivalent pyrrole ring, a bivalent alicyclic hydrocarbon having 5 to 8 carbon atoms and a combination thereof, wherein a hydrogen atom bonded thereto may be each independently replaced with —NO2, —CN, —CH═C(CN)2, —CH═CH—CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
R represents a hydroxy group, an alkoxy group having 1 to 6 carbon atoms, or has the same definition as Y1;
X represents a single bond, —COO—, —OCO—, —N═N—, —CH═CH—, —C≡C—, —CH═CH—CO—O—, or —O—CO—CH═CH—, and in a case where the number of X is 2, these Xs may be the same or different;
Cou represents a coumarin-6-yl group or a coumarin-7-yl group, wherein a hydrogen atom bonded thereto may be each independently replaced with —NO2, —CN, —CH═C(CN)2, —CH═CH—CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
one of q1 and q2 is 1, and another is 0;
q3 is 0 or 1;
P and Q each independently represents a group selected from the group consisting of a bivalent benzene ring, a bivalent naphthalene ring, a bivalent biphenyl ring, a bivalent furan ring, a bivalent pyrrole ring, a bivalent alicyclic hydrocarbon having 5 to 8 carbon atoms and a combination thereof, in proviso that in a case where X is —CH═CH—CO—O— or —O—CO—CH═CH—, P or Q on a side to which —CH═CH— is bonded is an aromatic ring, in a case where the number of P is 2 or more, these Ps may be the same or different, and in a case where the number of Q is 2 or more, these Qs may be the same or different;
11 represents 0 or 1;
12 represents an integer of 0 to 2;
in a case where both 11 and 12 are 0 and T is a single bond, A also represents a single bond;
in a case where 11 is 1 and T is a single bond, B also represents a single bond; and
H and I each independently represents a group selected from a bivalent benzene ring, a bivalent naphthalene ring, a bivalent biphenyl ring, a bivalent furan ring, a bivalent pyrrole ring and a combination thereof.