Reversible Oxygenation of α-Amino Acid–Cobalt(II) Complexes

Figure 1

Reversible performance of L–Co was determined by UV-vis spectrophotometry (curves 1, 2, and 3 were tested in nitrogen, and curves 1′, 2′, and 3′ were tested in an oxygen atmosphere).

(a) Ala–Co

(b) Ser–Co

(c) His–Co

(d) Lys–Co