4. Lifetimes (τ) for the Forward- and Back-Electron-Transfer Reactions Between Guanine and Λ-1 2+ and Δ-1 2+ (0.4 mM) in the Presence of 0.5 mM (per Duplex) G 5 C 5 in the 50 mM Aqueous Phosphate Buffer .
| selected λ (nm) or Ṽ (cm–1) | Δ-1 2+/G5C5 τ(FET) | Δ-1 2+/G5C 5 τ(BET) | Λ-1 2+/G5C 5 τ(FET) | Λ-1 2+/G5C5 τ(BET) |
|---|---|---|---|---|
| 505 nm (1 +) | 542 ± 31 ps | 378 ± 19 ps | ||
| 1650 cm–1 (C) | 575 ± 35 ps | 12.1 ± 0.8 ns | 380 ± 19 ps | 11.2 ± 0.8 ns |
| 1680 cm–1 (G) | 556 ± 41 ps | 14.5 ± 1.1 ns | 400 ± 27 ps | 15.8 ± 1.7 ns |
| 1700 cm–1 (G•+) | 531 ± 90 ps | 19.2 ± 4.9 ns | 321 ± 30 ps | 10.6 ± 1.8 ns |
| Δ-1 2+/hTel τ(FET) | Δ-1 2+/hTel τ(BET) | Λ-1 2+/hTel τ(FET) | Λ-1 2+/hTel τ(BET) | |
| 515 nm (1 +) | 1282 ± 74 ps | 816 ± 36 ps | ||
| 1668 cm–1 (G) | 1554 ± 97 ps | 85.4 ± 11.6 ns | 622 ± 18 ps | 20.3 ± 1.1 ns |
| 1688 cm–1 (G•+) | 1269 ± 256 ps | 533 ± 70 ps | ||
| 2217 cm–1 (G•+) | 820 ± 75 ps |
a
And of Λ-1 2+ and Δ-1 2+ (0.4 mM) in the presence of 1.2 mM hTel.