Table 2. Absorbance and Emission Properties of the Nanographenes as Measured in Chloroform at Room Temperature^a.

	Absorbance		Fluorescence		Stokes Shift
Compound	λmax (nm)	Eg(opt) (eV)b	λem (nm)c	Φf (%)d	nme (cm–1)f
Corg	290, 320 (sh)h	3.57	423, 437	0.80	147 (8370)
1	367, 387, 405 (sh), 457, 490	2.47	506, 530 (sh)	21.65	139 (646)
2	347 (sh), 370, 391, 412, 470, 500	2.35	650	0.08	280 (4620)
3a	315, 367, 405 (sh), 428, 520	2.19	680	0.8	313 (4525)
3b	315, 368, 387 (sh), 409, 470, 505	2.29	545, 660	0.73	177 (1450)
4	298, 350 (sh), 368, 386 (sh), 419, 475, 507	2.28	570	11.17	202 (2180)
5a	296, 350 (sh), 368, 390, 411, 467, 500	2.38	545	26.28	177 (1650)
5b	350 (sh), 368, 387, 408, 460, 495	2.43	533	18.22	165 (1440)
6	295, 350 (sh), 370, 407, 430, 500 (sh), 540	2.13	598, 646 (sh)	27.40	228 (1800)
7	355, 376, 420, 520	2.19	588	20.74	233 (2220)
8	350, 421, 496(sh), 550, 613	1.81	675	8.34	325 (1500)
9	350, 423, 550, 640	1.82	685	17.48	335 (1030)
10	335 (sh), 350, 423, 503, 550, 628	1.78	695	9.13	345 (1535)
11	297, 353 (sh), 370, 391, 413, 466, 496	2.35	525, 561 (sh), 685	16.83	155 (1110)
12	300 (sh), 353, 372, 405, 429, 535	2.13	573, 620 (sh)	65.53	201 (1240)
13	300 (sh), 352, 370, 406, 430, 531	2.11	579, 629	82.70	209 (1560)
14	354, 370, 388, 409, 470, 505	2.29	555	13.53	185 (1780)
15	350 (sh), 368, 386, 412, 460, 490	2.44	510, 545 (sh)	18.01	142 (801)
16	340 (sh), 368, 388, 405, 458, 490	2.45	510, 538 (sh)	28.63	142 (801)
17	315, 368, 388, 412, 470, 505	2.29	513, 548 (sh), 665 (sh)	3.03	145 (308)
18	315, 368, 390, 413, 470, 503	2.29	660	0.42	292 (4730)

^aThe wavelength in bold indicates the major signal.

^bCalculated from the long-wavelength absorption edge (E_g(opt) = 1240/λ_onest).

^cObtained by exciting each absorption maximum.

^dCalculated using integration sphere (conc ∼6 × 10^–6).

^eStokes shift in nm is calculated as the difference between absorption and emission maxima.⁵³

^fStokes shift in cm^–1 is calculated as the difference between lowest energy absorption band and emission maximum.

^gCor = corannulene.

^hsh = shoulder.