This work is an important contribution to the development of neuromorphic engineering based on solutions of nonlinear chemical systems. It reports the results of experiments and simulations regarding the optical communication between the Belousov-Zhabotinsky reaction and photochromic and luminescent materials. It demonstrates that thermally reversible photochromic and luminescent compounds are dynamic models of phasic photo-excitable neurons. Moreover, it shows that photo-reversible photochromic compounds can be used for the implementation of optical synapsis and memory effects. Finally, it reports the first example of transmission of a chaotic signal between a Hydrodynamic Photochemical Oscillator based on a photochromic naphthopyran and a luminescent acridinium salt.