Table 2. Emission Data of Complexes 3a–e.

complex	mediuma	λem (nm)b	Φc	τ (μs)d	kr × 10–3 (s–1)e	knr × 10–3 (s–1)f
3a	PMMA	417, 467, 487	0.044	46	0.96	21
3b	CH2Cl2	436, 466, 494 (sh), 554 (sh)	0.27	133	2.0	5.5
	PMMA	435, 464, 493	0.97	295	3.3	0.088
	CH2Cl2 (air)	436, 465, 495	0.012	4.3	2.8	233
	PMMA (air)	436, 465, 494	0.23	88 (48%), 207 (52%)
3c	CH2Cl2	447, 478, 504 (sh)	0.31	110	2.8	6.2
	PMMA	446, 478, 504 (sh)	0.93	258	3.6	0.26
	CH2Cl2 (air)	448, 478, 503 (sh)	0.009	3.4	2.6	291
	PMMA (air)	447, 478, 504 (sh)	0.23	80 (41%), 178 (59%)
3d	CH2Cl2	453, 485, 514 (sh)	0.26	140	1.8	5.3
	PMMA	452, 484, 511 (sh)	0.86	319	2.7	0.43
	CH2Cl2 (air)	453, 484, 513 (sh)	0.007	2.5	2.8	397
	PMMA (air)	453, 484, 513 (sh)	0.20	88 (52%), 213 (48%)
3e	CH2Cl2	513, 530, 552	0.046	45	1.0	21
	PMMA	512, 528, 551	0.49	304	1.6	1.7
	PMMA (air)	513, 530, 552	0.11	86 (41%), 196 (39%)

^aUnder the exclusion of oxygen, except where noted.

^bThe most intense peak is italicized.

^cQuantum yield.

^dEmission lifetime; relative amplitudes are given in parentheses for biexponential decays.

^eRadiative rate constant, k_r = Φ/τ.

^fNonradiative rate constant, k_nr = (1 – Φ)/τ.