Optical composition, cured product, and optical element

An optical element comprising an optical member,

• wherein the optical member comprises:
• a first compound represented by general formula (1):
• and
• a second compound represented by general formula (2),
• wherein the first compound and the second compound are polymerized with each other, and
• wherein a content of the second compound in the optical member is 1.0 mass% to 10.0 mass% with respect to the first compound:
• wherein, in the general formula (1) and the general formula (2):
• X1, X2, Y1, and Y2 each represents O or S, and may be identical to or different from one another;
• R1 to R4 each represents one selected from the group consisting of a methyl group, an ethyl group, a propyl group, an isopropyl group, an allyl group, a 2-(meth)acryloyloxyethyl group, a 3-(meth)acryloyloxypropyl group, and a 4-(meth)acryloyloxybutyl group, and may be identical to or different from one another;
• Z1, Z4, and Z6 each represents a structure represented by general formula (3);
• Z2, Z3, Z5, and Z7 each represents one selected from the group consisting of a hydrogen atom, a methyl group, an ethyl group, an isopropyl group, a methoxy group, an ethoxy group, an isopropoxy group, a methylthio group, an ethylthio group, a propylthio group, a 2-(meth)acryloyloxyethoxy group, a 3-(meth)acryloyloxypropoxy group, a 4-(meth)acryloyloxybutoxy group, and a structure represented by the general formula
• Z8 represents V in a structure represented by the general formula (3):
• wherein, in the general formula (3), m represents 0 or 1, W represents a hydrogen atom or a methyl group, and V is selected from the group consisting of:
• *—O—**;
• *—S—**;
• *—O—CnH2n—O—**;
• *—S—CnH2n—O—**;
• *—O—CnH2n—S—**;
• and
• *—S—CnH2n—S—**,
• where, in each of the Z1 to the Z7, * represents a bonding site with an alkylene moiety and ** represents a bonding site with a (meth)acryloyl group, and
• where, in the Z8, the V does not represent *—O—** and *—S—**, and each of * and ** represents a bonding site with an alkylene moiety, and a structure represented by CnH2n in the V may have a substituent on a carbon atom, and n represents an integer selected from the group consisting of 2 to 5.

A method of producing a material, comprising:

• preparing an optical composition containing at least a first compound represented by general formula (1) and a second compound represented by general formula (2), a content of the second compound in the optical composition being 1.0 mass % to 10.0 mass % with respect to the first compound;
• and
• polymerizing the optical composition to cure the composition:
• wherein, in the general formula (1) and the general formula (2):
• X1, X2, Y1, and Y2 each represents O or S, and may be identical to or different from one another;
• R1 to R4 each represents one selected from the group consisting of a methyl group, an ethyl group, a propyl group, an isopropyl group, an allyl group, a 2-(meth)acryloyloxyethyl group, a 3-(meth)acryloyloxypropyl group, and a 4-(meth)acryloyloxybutyl group, and may be identical to or different from one another;
• Z1, Z4, and Z6 each represents a structure represented by general formula (3);
• Z2, Z3, Z5, and Z7 each represents one selected from the group consisting of a hydrogen atom, a methyl group, an ethyl group, an isopropyl group, a methoxy group, an ethoxy group, an isopropoxy group, a methylthio group, an ethylthio group, a propylthio group, a 2-(meth)acryloyloxyethoxy group, a 3-(meth)acryloyloxypropoxy group, a 4-(meth)acryloyloxybutoxy group, and a structure represented by the general formula (3), and may be identical to or different from one another;
• and
• Z8 represents V in a structure represented by the general formula (3):
• wherein, in the general formula (3), m represents 0 or 1, W represents a hydrogen atom or a methyl group, and V is selected from the group consisting of:
• *—O—**;
• *—S—**;
• *—O—CnH2n—O—**;
• *—S—CnH2n—O—**;
• *—O—CnH2n—S—**;
• and
• *—S—CnH2n—S—**,
• where, in each of the Z1 to the Z7, * represents a bonding site with an alkylene moiety and ** represents a bonding site with a (meth)acryloyl group, and
• where, in the Z8, the V does not represent *—O—** and *—S—**, and each of * and ** represents a bonding site with an alkylene moiety, and a structure represented by CnH2n in the V may have a substituent on a carbon atom, and n represents an integer selected from the group consisting of 2 to 5.