Skip to main content

View full-text article in PMC

. 2020 Sep 14;59(19):14000–14011. doi: 10.1021/acs.inorgchem.0c01773

Table 5. Spectroscopic Parameters of Ternary Complexes of Cu(II)-Aβ_5–x with Imidazole (Im) or Aβ_5–x at 25 °C.

		UV–vis	CD
Ternary complex	Mode	λ_max/nm (ε/M^–1 cm^–1)	λ_ext/nm (Δε/M^–1 cm^–1)
Cu(II)-Aβ_5–9+ Aβ_5–9	3N+N_Aβ(5–9)	566 (79)^a	560 (+0.20)^a
			478 (−0.08)^a
			335 (+0.15)^b
			300 (−0.37)^c
			267 (+0.51)^d
Cu(II)-Aβ_5–9+ Aβ_1–16	3N+N_Aβ(1–16)	575 (76)^a	564 (+0.22)^a
			482 (−0.07)^a
			337 (+0.17)^b
			298 (−0.37)^c
Cu(II)-Aβ_5–9+ Im	3N+N^Im	566 (75)^a	645 (−0.11)^a
			551 (+0.17)^a
			478 (−0.08)^a
			332 (+0.11)^b
			296 (−0.35)^c
			265 (+0.54)^d
Cu(II)-Aβ_5–12+ Im	3N+N^Im	562 (81)^a	644 (−0.11)^a
			550 (+0.17)^a
			478 (−0.11)^a
			333 (+0.13)^b
			297 (−0.40)^c
Cu(II)-Aβ_5–16+ Im	3N+N^Im	564 (70)^a	645 (−0.08)^a
			553 (+0.19)^a
			478 (−0.06)^a
			330 (+0.12)^b
			297 (−0.35)^c

^a

d–d transition.

^b

N^im–Cu^II charge transfer (CT).

^c

N^––Cu^II CT.

^d

N^am–Cu^II CT.