Table 2. Emission Data of Complexes 4a–e at 298 K.

complex	medium	λem (nm)a	ΦPb	τ (μs)c	kr × 10–3 (s–1)d	knr × 10–3 (s–1)e
4a	CH2Cl2	431, 459, 486	0.34	118	2.9	5.6
	PMMA	431, 458, 486	0.68	348	1.9	0.9
4b	CH2Cl2	443, 474, 499	0.25	132	1.9	5.7
	PMMA	443, 473, 500	0.77	341	2.3	0.7
4c	CH2Cl2	450, 481, 507	0.24	169	1.4	4.5
	PMMA	450, 480, 508	0.77	433	1.8	0.5
4d	CH2Cl2	507, 523, 545, 588	0.15	148	1.0	5.7
	PMMA	507, 523, 545, 589	0.44	514	0.9	1.1
4e	CH2Cl2	400, 511, 550, 592	0.10	117	0.8	7.7
	PMMA	395, 509, 547, 592	0.39	750	0.5	0.8

^aThe most intense peak is italicized.

^bPhosphorescence quantum yield.

^cLifetime.

^dRadiative rate constant, k_r = Φ_P/τ.

^eNonradiative rate constant, k_nr = (1 – Φ_P)/τ.