Contrary to electron-withdrawing groups,electron-donating groups in the phenyls of the compounds increase the fluorescence intensities,and decrease with atomic weight of halogens.

• 结果表明,卟啉化合物的苯基上供电子取代基能增加卟啉的荧光强度,而吸电子取代基作用相反;荧光强度随着卟啉的苯环上取代基卤素原子量的增加而降低;