All the spectroscopic measurements were performed using spectrophotometric grade solvents without any additional purification. The solvents used are acetonitrile (MeCN), propionitrile (ProCN), butyronitrile (BuCN), and tetrahydrofuran (THF). The triethanolamine (TEOA) was mixed with MeCN in the proportion MeCN:TEOA (5:1) that corresponds to the photocatalytic conditions applied in reference , or with THF, in the same proportion THF:TEOA (5:1). No other ratio was used in this work.