The electronic absorption and luminescence spectra of N-hetero-aromatic compounds and their derivatives

CONTENTS
I. General remarks 693
II. Characteristic features of bands due to electronic n–π* and π–π* transitions 694
III. Condensed aromatic heterocycles with one nitrogen atom 696
IV. Azabenzenes and polycyclic compounds with two or more nitrogen atoms 700
V. Substituted N-heterocyclic compounds 702
VI. Azomethines and azo-compounds 703
VII. Porphyrins and phthalocyanines 706