Abstract
Several excited state properties are evaluated for three isomeric mono-aminoanthracenes (AA) and anthrylammonium cations (AAH+). Absorption and fluorescence spectra, their polarizations and solvent-shifts, phosphorescence spectra and triplet-triplet absorptions are described and interpreted in terms of energies, protolytic pK, dipole moments µ, and net charges qN on the nitrogen atom in the ground state G, in the lowest triplet state T1, and in the lowest excited singlet state S1. The value ΔpK*S=–8.8 is equal for all isomers; Δµ*S are differentiated : 6.7, 5.4 and 3.5 D, for 1-, 2-, and 9-AA, respectively. The qN values evaluated for the S1 state from both series of independent experiments are mutually consistent. All pKT values are close to pKG values. All experimental data are compared with available results of π-electron approximations.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
