Table 1.

Photophysical properties of the benzo[g]coumarin derivatives 11–21. The wavelengths are derived from the highest intensity values in the absorption and fluorescence emission spectra in the described solvent.

Compound	λ abs (nm)	λ emi (nm)	Solvent	Reference
1	320	459	CH3CN	[13]
2	332	534	CH3CN	[13]
3	337	549	CH3CN	[13]
4	345	547	CH3CN	[13]
5	334	515	CH3CN	[13]
6	326	510	CH3CN	[13]
7	335	533	CH3CN	[13]
8	357	466	CHCl3	[14]
9	450	603	DI H2O	[12]
10	355	539	DI H2O	[12]
11	467	623	EtOH	[15]
12	413	599	DI H2O	[12]
13	370/453	542/604	pH 4/pH 7 buffer	[16]
14	470	626	pH 7.4 buffer	[17]
15	450	600	pH 7.4 buffer	[18]
16	357	522	DI H2O	[12]
17	435	582	DI H2O	[12]
18	444	607	EtOH	[15, 19]
19	431	591	CH3CN	[20]
20	487	633	pH 7.4 buffer	[21]
21	527	691	EtOH	[22]