Tetrakis (4-hydroxybiphenyl) ethylene

4,4',4'',4'''-(1,4-phenylenebis(1H-imidazole-2,4,5-triyl))tetrabenzoic acid

5-(6-carboxynaphthalen-2-yl)isophthalic acid

6,6',6“,6'“-(1,1'-biphenyl-3,3',5,5'-tetrayl)tetra

2',2“,2“',5',5“,5“'-hexamethyl-1,1':4',1“:4“,1'“:4