▎ 摘　　要

NOVELTY - A spiropyran photochromic group modified graphene oxide (I) is new. USE - Spiropyran photochromic group modified graphene oxide used for optical information storage and optical switch. ADVANTAGE - The compound has good photochromic performance, and strong heat fading stability. DETAILED DESCRIPTION - A spiropyran photochromic group modified graphene oxide of formula (I) is new. GO=graphene oxide; p, y, y=1-1000; A=-H or -CH3; and B'=-C(=O)-OCH3 or -C(=O)-OCH2CH3. An INDEPENDENT CLAIM is included for preparation of (I).