Fig. 2: Construction of isomeric single benzene fluorophores.
From: Relief of excited-state antiaromaticity enables the smallest red emitter

Synthetic routes for o-, m-, and p-DAPA. p-TsOH para-toluenesulfonic acid, EtOH ethanol.
From: Relief of excited-state antiaromaticity enables the smallest red emitter

Synthetic routes for o-, m-, and p-DAPA. p-TsOH para-toluenesulfonic acid, EtOH ethanol.