Table 1.

Photophysical and electrochemical data of the title compounds (for more details on the measurement conditions, see the Supporting Information).

	λ max [nm][a] ϵ [104   m −1 cm−1]	λ em [nm]	Φ	E ox [V]	E HOMO /E LUMO [d] [eV]
3	298 (2.61)	411	0.0221	+0.3421	−6.94/1.35
4	310 (1.88)	354	<0.03[b]	+0.38	−6.82/0.59

[a] 10⁻⁶   m in CH₂Cl₂. [b] Quantum yields determined using an integrating sphere. [c] Redox potentials from cyclic voltammetry vs. Fc/Fc⁺ (0.1 m nBu₄NPF₆ in CH₂Cl₂, scan rate 100 mV s⁻¹). [d] DFT, ωB97X‐D/def2‐TZVP.