. 2020 Apr 20;21(8):2866. doi: 10.3390/ijms21082866

Table 3.

Spectroscopic parameters of copper(II) complexes with VEGFQ79G and VEGFI83G. [L] = 1 × 10⁻³ M, 0.8:1 metal to ligand molar ratio at pH 5, 7, and 11.

pH	Ligand	UV/Vis λmax [nm] ε [M⁻¹ cm⁻¹])	CD λmax [nm] (Δε[Μ⁻¹ cm⁻¹])
7	VEGFQ79G	581(134)	605(−0.52) ^a; 514(0.75) ^a; 313(−0.68) ^b
7	VEGFI83G	600(86)	605(−0.34) ^a; 514(0.39) ^a; 313(−0.28) ^b

^a d–d Transition. ^b N_im →Cu²⁺ charge transfer.