To provide a covalent organic structure that can cause the switching phenomenon of discoloring due to external action, a covalent organic structure composition and a method of producing the same.SOLUTION: The present invention relates to a covalent organic structure of formula (A), a covalent organic structure of formula (B), and a covalent organic structure of formula (C), and a covalent organic structure composition that comprises these structures and changes in its equilibrium state by the action of heat and/or light and a method for producing the same.SELECTED DRAWING: Figure 1
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