Supporting Information
Synthesis and photophysical studies on naphthalimide derived fluorophores as markers in drug delivery
Nidhi Singh, Ritika Srivastava, Anuradha Singh and Ramendra K. Singh*Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad – 211002, India*Corresponding author (Tel.: +91.532.2461005; E mail address: [email protected]
Fluorescent studies on synthesized fluorophores compounds 2-6:
2 3 4
5 6
6-(6-Acetylamino-1, 3-dioxo-1H, 3H-benzo [de]isoquinolin-2-yl)-hexanoic acid (2)
6-(6-Ethoxycarbonylamino-1,3-dioxo-1H,3H-benzo[de] isoquinolin-2-yl)-hexanoic acid (3)
6-(6-tert-Butoxycarbonylamino-1,3-dioxo-1H,3H-benzo[de] isoquinolin-2-yl)-hexanoic acid (4)
6-(6-Methanesulphonylamino-1, 3-dioxo-1H, 3H-benzo [de]isoquinolin-2-yl)-hexanoic acid (5)
6-[1, 3-Dioxo-6-(toluene-4-sulfonylamino)-1H, 3H-benzo [de]isoquinolin-2-yl]-hexanoic acid (6)
Solvatochromic studies on compound 2-6
Fig.1. Solvatochromism of compound 2 (absorption and emission spectra)
Fig.2. Solvatochromism of compound 3 (absorption and emission spectra)
Fig.3. Solvatochromism of compound 4 (absorption and emission spectra)
Fig.4.
Solvatochromism of compound 5 (absorption and emission spectra)
Fig.5. Solvatochromism of compound 6 (absorption and emission spectra)
Time-resolved fluorescent measurement studies on compound 2-6
Fig.6.
Fluorescence Lifetime of compound 2 Fig.7.
Fluorescence Lifetime of compound 3
Fig.8. Fluorescence Lifetime of compound 4 Fig.9. Fluorescence Lifetime of compound 5
Fig.10. Fluorescence Lifetime of compound 6