Influence of temperature and magnetic fields on inter layers and intra layer annihilation of the triplet centres in nanoscale films of coumarin dye

Abstract

The influence of temperature and magnetic field on delayed fluorescence of mixed Langmuir films of molecules 7-decyloxy-3 (4'-ethoxyphenyl)-coumarin and palimitic acid is investigated. In this films consist of microcrystals and clusters with non-crystalline structure. The annihilation is stipulated by interaction of molecules of different layers and most effective occurred at low temperatures at registration time till the 0.5 ms.