▎ 摘　　要

NOVELTY - Composite of block copolymer and graphene quantum dots, comprises graphene quantum dots, chain transfer agent coupled to the graphene quantum dot, stimulating sensitive polymer synthesized from the chain transfer agent, and fluorescent polymer synthesized from stimulating sensitive polymer. USE - The composite is useful for temperature sensitive sensor, pH-sensitive sensor and metal ion sensitive sensor (all claimed), and in optical, environmental, and biotechnology fields. ADVANTAGE - The composite has effect of reversibly and stably sensing temperature, pH and various metal ions at the same time, and easily responds to temperature, pH and various metal ions by fluorescence color change which is recognized in the eye. DETAILED DESCRIPTION - Composite of block copolymer and graphene quantum dots, comprises graphene quantum dots, chain transfer agent coupled to the graphene quantum dot, stimulating sensitive polymer synthesized from the chain transfer agent, and fluorescent polymer synthesized from stimulating sensitive polymer. The composite of block copolymer and graphene quantum dots is produced by dissolving graphene quantum dots and the chain transfer agent to prepare a mixture through coupling reaction, and adding stimulating sensitive polymer monomer and free radical initiator to perform polymerization reaction, and further performing polymerization reaction by adding fluorescent polymer monomer and free radical initiator. INDEPENDENT CLAIMS are also included for: (1) producing composite of block copolymer and graphene quantum dot, comprising (a) dissolving graphene quantum dots and the chain transfer agent to prepare a mixture through coupling reaction, (b) adding polymer monomer and free radical initiator to the mixture to perform polymerization reaction, and (c) performing polymerization reaction by adding fluorescent polymer monomer and free radical initiator; and (2) metal ion sensor comprising composite of block copolymer and graphene quantum dots.