Table 2.

Summary of photophysical data.

		Absorption		Emission
Cmpd	Ta (K)	B(0,0) (nm)	Q(0,0) (nm)	Q(0,0) (nm)	T(0,0) (nm)	ES (eV)	ET (eV)	ES ET (eV)	Φ p/Φf	τS (ns)	Φf	(kf) −1 (ns) b	Φisc	(kisc)−1 (ns)c	( ${\text{k}}_{\text{isc}}^{\text{ref}}$)−1 (ns)d	${\mathrm{\Phi }}_{\text{isc}}^{\text{ref}}$ a	τT (ms)	Φpf	(kp)−1 (ms)
1-Zn	295	411	576	583		2.12				3.0g	0.014h	214i	0.69	4.3	3.7	0.80	4.5j
	77			579	738	2.14	1.68	0.46	0.11								64	0.0015	33000
2-Zn	295	412	576	582		2.13				3.0k	0.015l	200m	0.79	3.8	3.8	0.80	6.1j
	77			579	738	2.14	1.68	0.46	0.14								54	0.0021	21000
2-Pd	295	400	547	550	672	2.25	1.84	0.41	26	0.009	0.00012	75	0.88	0.010	0.009	>0.99	0.01 j
	77			542	657	2.28	1.89	0.39	650								2.0	0.078	26
2-InCl	295	415	603	637		1.95	1.50n	0.45		0.24	0.0078	31	0.83	0.29	0.25	0.98
ZnTPP	295	423	588	595		2.08				2.1o	0.030p	70q	0.85r	2.5s		0.85	4.6
	77			599	784	2.07	1.58	0.49	0.11t								33u	0.0033v	8500w
PdTPP	295	417	553	560	696	2.21	1.78	0.43	11	~ 0.01x	0.00018y			~0.01z			0.11
	77				683		1.82		>460aa							>0.99	1.5ab	>0.08ac	<19

^aUnless noted otherwise, studies on 1-Zn, 2-Zn, 2-Pd, and 2-InCl at 295 K utilized samples in MeOH/THF = 3:1, and studies at 77 K utilized samples in frozen ethanol glasses. Studies on ZnTPP and PdTPP utilized samples in toluene, except for determinations of τ_T, which used 2-MeTHF solutions (295 K) or frozen glasses (77 K).

^bCalculated using Eq. (4).

^cCalculated using Eq. (5).

^dCalculated using Eq. (6) and the value of k_ic = (16.2 ns)⁻¹ for ZnTPP.

^eCalculated using Eq. (7) and the value in the preceding column.

^fObtained by multiplying the Φ_p/Φ_f (obtained from the emission spectra at 77 K) times the value of Φ_f determined at 295 K, assuming that Φ_f is not affected substantially by temperature [29,49].

^gThe values in cPBS and cPBS/BSA are 2.5 ns and 2.7 ns, respectively.

^hThe values in cPBS and cPBS/BSA are 0.019 and 0.020, respectively.

ⁱThe values in cPBS and cPBS/BSA are (132 ns)⁻¹ and (135 ns)⁻¹, respectively.

^jCompound in ethanol.

^kThe values in cPBS and cPBS/BSA are 2.6 ns and 2.7 ns, respectively.

^lThe values in cPBS and cPBS/BSA are 0.019 and 0.014, respectively.

^mThe values in cPBS and cPBS/BSA are (136 ns)⁻¹ and (193 ns)⁻¹, respectively.

ⁿObtained assuming an average value of E_S − E_T = 3500 cm⁻¹ from 1-Zn, 2-Zn, and 2-Pd.

^oMeasured in toluene in ref. 31. A value of 2.2 ns is measured in toluene in ref. 49. A value of 2.7 ns is measured in methylcyclohexane in ref. 34.

^pMeasured in toluene in refs. 22 and 49, and in methylcyclohexane in ref. 34.

^qThe same value is derived in ref. 49 and a value of 59 in ref. 34.

^rDerived from the values obtained in ref. 50 (0.83) and here (0.9).

^sA value of 2.8 ns is reported in ref. 34.

^tAdditional values are reported in refs. 49 (0.37) and 51 (0.32).

^uAdditional values are reported in refs. 49 (25) and 34 (26).

^vAdditional values are reported in refs. 34 (0.012) and 49 (0.015).

^wAdditional values are reported in refs. 49 (1700) and 34 (2000).

^xCalculated as described in the text. A value of 0.02 ns near the instrument limit is reported in ref. 34.

^yAveraged of values from refs. 52 (0.00015), 25 (0.0002), and 34 (0.0002).

^zCalculated as described in the text. A value of 0.02 is derived in ref. 34.

^aaNo fluorescence is observed, so the ratio is calculated based on the phosphorescence intensity above the baseline.

^abAdditional values are reported in refs. 35 (2.4) and 34 (2.8).

^acAdditional values are reported in refs. 52 (0.08), 34 (0.17), and 35 (0.2).