Fig. 5. Light intensity dependence of the product ratio of CO/HCOO– in DMA/water (9 : 1 v/v) solutions containing trans(Cl)–Ru(bpy)(CO)2Cl2 (20 μM), [Ru(bpy)3](PF6)2 (0.50 mM) and BNAH (0.10 M) during photo-irradiation with λ > 400 nm light. The photo-irradiation times were (I) 50 min, (II) 20 min, (III) 10 min and (IV) 5 min (total incident light: 2.3 × 10–4 einstein).
