Optical materials with improved heat resistance, especially dopant-type GI POFs with improved heat resistance are provided. These optical materials each comprises at least one aromatic sulfide compound represented by the following formula (1):
1
wherein
n stands for an integer of from 2 to 12,
k stands for an integer of from 1 to n,
A represents a substituted or unsubstituted, n-valent carbocyclic aromatic ring or heterocyclic aromatic ring, and
B
1
to B
n
each independently represent a substituted or unsubstituted, carbocyclic aromatic group or heterocyclic aromatic group.
提供了具有改进热稳定性的光学材料,特别是具有改进热稳定性的掺杂型GI POFs。这些光学材料每个包括至少一种由以下公式(1)表示的芳香
硫化合物:1其中n代表2至12的整数,k代表1至n的整数,A代表取代或未取代的n价碳环芳香环或杂环芳香环,而B1至Bn各自独立地代表取代或未取代的碳环芳香基或杂环芳香基。