| abstract |
The present invention provides an optical composition containing a polyrotaxane. The aforementioned polyrotaxane is a polyrotaxane having a composite molecular structure formed of an axial molecule and a plurality of cyclic molecules including the axial molecule, and satisfies at least one of (X) and (Y). (X) a side chain having a secondary or tertiary hydroxyl group is introduced into at least a part of the cyclic molecule of the polyrotaxane; (Y) a side chain having a secondary or tertiary hydroxyl group is introduced into at least a part of the cyclic molecule of the polyrotaxane; is an organic group and contains at least one side chain of a group represented by a hydroxyl group), and the pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14. |