Search results for "indandione"
showing 4 items of 4 documents
4-(Diethylamino)salicylaldehyde-based twin compounds as NLO-active materials
2016
Abstract 4-(Diethylamino)salicylaldehyde-based twin compounds containing 1,3-indandione and 1,3-bisdicianovinylindane moieties were synthesized and their thermal, optical, photophysical, electrochemical, photoelectrical and nonlinear optical properties were studied. The synthesized compounds form glasses with the glass transition temperatures ranging from 79 to 103 °C. Photoluminescence spectra of the solutions of compounds exhibited red-shifts with the increase of the solvent polarity that was caused by the positive solvatochromic effect. The linear dependencies between the position of the photoluminescence maxima of compounds and the empirical parameter E T (30) of the different solvents …
Fluorescence quenching by trapped charge carriers in N,N-dimethylaminobenzylidene 1,3-indandione films
2010
Effects caused by the applied voltage on the steady state and time-resolved fluorescence of vacuum evaporated N,N-dimethylaminobenzylidene 1,3-indandione films sandwiched between gold and aluminium electrodes were investigated and discussed. Fluorescence enhancement and quenching as well as the fluorescence band narrowing depending on the applied voltage have been observed. Fluorescence decay and recovery take place on a time scale of tens of seconds after voltage is switched on and off. Similar fluorescence decay also takes place after switching on the excitation light. These fluorescence changes are attributed to the exciton quenching by trapped charge carriers.
Photovoltaic effect in bulk heterojunction system with glass forming indandione derivative DMABI-6Ph
2018
The aim of the work is to evaluate possible use of 2-[[4-(bis(2-trityloxyethyl)amino)phenyl]methylene]indane-1,3-dione (DMABI-6Ph) as light absorbing material for solar cells. DMABI-6Ph is a perspective material due to its good photoelectrical, thermal and chemical properties. The main advantage of DMABI-6Ph is its ability to form amorphous films by wet-casting methods thus allowing using the compound in organic solar cells made from solution. For now most popular materials for solution processable solar cells are polymer P3HT and fullerene derivative PCBM, but lot of investigations are in the field of new low molecular weight materials to replace the polymer. Photoelectrical measurements w…
Photoelectrical Properties and Energetical Structure of Thin Films of Indandione Derivatives
2011
A sandwich type structure of two dimetilaminobenziliden-1,3-indandione (DMABI) derivatives placed between metal electrodes was made to investigate the photoelectrical properties of these derivatives. DMABI is an organic isolator with a wide energy gap and high quantum efficiency of the photogeneration, DMABI derivatives have received also considerable attention because of its large dipole moment and optical nonlinearities. Besides, since it is a photosensitive material, its use in solar systems is very promising. The energy gap of each material and combined system was observed from the spectral dependence of the quantum efficiency of the photoconductivity and results are compared with resul…