Journal of Physical Chemistry A, Vol.107, No.18, 3295-3299, 2003
Orbital control of the color and excited state properties of formylated and fluorinated derivatives of azulene
New azulene derivatives containing resonantly electron withdrawing formyl and resonantly electron donating fluorine substituents on the seven- as well as the five-member ring have been prepared. Systematic color changes as a result of perturbation of HOMO, LUMO, and LUMO + 1 energies were discussed. Corresponding excited-state properties related to S-2-fluorescence were determined.