. Author manuscript; available in PMC: 2017 Jul 8.

Published in final edited form as: RSC Adv. 2016 Jun 3;6(66):61249–61253. doi: 10.1039/C6RA10605F

Table 1.

Photophysical Properties of Benzo[1,2-b]indolizines^a

compound	λ_max (nm)	λ_em (nm)	Stokes shift (cm^-1)	Φ_F
3a	272, 338, 440	489, 517^b	2277	0.08 ± 0.01^b
3b	274, 335, 440	490, 527^b	2319	0.10 ± 0.01^b
3c	272, 339, 436	495, 526^b	2734	0.10 ± 0.01^b
3d	271, 333, 439	486, 516^b	2203	0.52 ± 0.07^b
3f	281, 358, 451	511, 535^b	2603	0.05 ± 0.01^b
3a–H⁺	362	428^c	4260	0.17 ± 0.01^c
3b–H⁺	370	442^c	4403	0.24 ± 0.01^c
3c–H⁺	377	498^c	6445	< 0.01^c

In CH₃OH.

Excitation at 270 nm; tyrosine as standard.

Excitation at 370 nm; quaterthiophene as standard.