Synthesis general. Solvents were obtained from SDS and are synthetic grade. Reagents were bought form Aldrich Chemical Co. or AlfaAesar Chemical Co. NMR spectra were measured from CDCl 3 solutions of the samples using a Bruker DPX 400 spectrometer or a JEOL ECS400 spectrometer, with TMS as an internal standard. Syntheses of compounds 5 24b , 6, 10 and 14 31 have been published elsewhere. Scheme S1. Synthesis of ketoximes 10-13 from [2.2]paracyclophane. General procedure for the synthesis of ketones 7-9 [2.2]Paracyclophane (1 eq.) is dissolved in dichloromethane (c=0.1 mol.L-1), stirred and cooled at 0° in an salt-ice bath. The acid chloride (2.1 eq.) and aluminum chloride (1.75 eq.) are suspended in dichloromethane (c=1 mol.L-1), cooled at 0°C and added quickly to the [2.2]paracyclophane solution under rapid stirring. Reaction mixture is maintained at 0°C for 15 min, pored onto ice and vigorously stirred until the organic layer becomes colorless. Diethyl ether is added until the organic layer becomes less dense than water. The organic layer is separated, washed twice with a saturated NaHCO 3 aqueous solution and finally with a a saturated NaCl aqueous solution. The organic layer is dried on MgSO 4 and the solvents are removed under reduced pressure. The crude product is purified by column chromatography on SiO 2. Elution petroleum ether/dichloromethane 3:2 v/v to remove the unreacted

The study of the chemical and electrochemical fluorescence switching properties of a family of substituted triphenylamine derivatives is reported.

New dyes based on BODIPY and tetrazine fluorophores connected through a phenyl spacer have been synthesized and their absorption, emission and electrochemical properties characterized. BODIPY can be reversibly oxidized into a stable cation radical whereas tetrazine can be reduced to a stable anion radical. The electrochemical and absorption studies demonstrate that both fluorophores behave independently. The bichromophoric compounds show an expected