Covalent pendulous anthraquinone polymers coupled on graphenes for efficient capacitance storage in both alkaline and acidic media. Issue 33 (12th August 2020)

• Record Type: Journal Article
• Authors: Cheng, Tingting; Jiang, Yuelin; Jin, Linhui; Kong, Aiguo; Shan, Yongkui
• Is Part Of: Dalton transactions. Volume 49:Issue 33(2020)
• Page Start: 11640
• Page End: 11647
• Publication Date: 2020-08-12
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt02279a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Novel crystalline covalent organic polymers (COPs) were constructed by reacting 1, 4-diaminoanthraquinone with 1, 3, 5-triformylphloroglucinol or tris(4-formylphenyl)amine (TPDA or TADA). Abstract : Novel crystalline covalent organic polymers (COPs) were constructed by reacting 1, 4-diaminoanthraquinone with 1, 3, 5-triformylphloroglucinol or tris(4-formylphenyl)amine (TPDA or TADA). After they were covalently bonded to amine-functionalized graphene oxides, the resulting mesoporous COPs@graphene composites demonstrated efficient capacitance storage performance in both alkaline and acidic media. In particular, the as-synthesized TPDA@graphene displayed a reversible specific capacitance of 522 F g −1 in a 6.0 mol L −1 aqueous KOH electrolyte, superior to the previously reported COPs with inconspicuous capacitance storage properties in alkaline media. Its specific capacitance also reached 390 F g −1 in 2.0 mol L −1 H2 SO4 . The impressive capacitance storage properties of this composite can be ascribed to its unique structure with abundant pendulous anthraquinone redox groups and better electrical conductivity enhanced by the coupled graphenes.