Synthesis of Network Polymers Containing Triazine via Direct Arylation of Fluoroarenes and Their Properties

Abstract

The direct arylation synthesis of π-conjugated network polymers (conjugated microporous polymers: CMP) containing fluoroarene and triazine moieties was successfully achieved. The direct arylation of 1,2,4,5-tetrafluorobenzene or 1,3,5-trifluorobenzene with a tribromoarene having a triazine core under two reaction conditions (Conditions a: in DMAc, Conditions b: in toluene) gave four types of CMPs (CMP1a, CMP1b, CMP2a and CMP2b). Brunauer-Emmett-Teller (BET) surface area of CMP2a and CMP2b was higher than that of CMP1a and CMP1b because of a higher number of branches. The solvents used for the direct arylation polycondensation thus strongly affected the structure of the resulting CMPs.