Novel Compound and Method for Synthesizing the Same, Ink, Ink Cartridge, Recording Unit, Ink-Jet Recording Apparatus, Recording Method, Liquid Composition, Pattern Generating Method, Article, Environmental History-Detecting Method

Abstract

Provided is a solubility-controllable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

1 . A method for forming an organic semiconductor film, comprising steps of: 
 applying onto a base material a solution containing a porphyrin compound having four bicyclo[2.2.2]octadiene skeletons each including a bridging ethylene moiety; and    inducing retro-Diels-Alder reaction in the bicyclo skeletons to thereby convert the porphyrin compound to an organic semiconductor.    
   
   
       2 . The method according to  claim 1 , wherein at least one of the bicyclo skeletons has a polar group containing at least any one of an oxygen atom, a nitrogen atom, and a sulfur atom.