title: Synthesis, materials characterization and opto(electrical) properties of unsymmetrical azomethines with benzothiazole core.
abstract: Optical (UV-vis and photoluminescence) properties of two soluble organic molecules based on azomethines with benzothiazole core (BTA1 and BTA2) were reported. The structures of both compounds are characterized by means FTIR, (1)H NMR, and (13)C NMR spectroscopy and elemental analysis; the results show an agreement with the proposed structure. The investigated compounds emitted blue light. Influence of excitation wavelength and concentration on maximum and intensity of emission of BTA1 and BTA2 was found. Electrochemical properties of the compounds were studied by differential pulse voltammetry. Introduction of fluorine moieties (BTA1) resulted in lower energy band gap (E(g)) of approximately ∼0.5 eV, whereas BTA2 showed E(g) of ∼2.8 eV. The devices comprised of BTA1 with P3HT:PCBM (1:1:1) showed an open circuit voltage (V(OC)) of 0.40 V, a short circuit current (J(SC)) of 1.19 mA/cm(2), and a fill factor (FF) of 0.23, giving a power-conversion efficiency (PCE) of 0.10% under AM1.5 G irradiation (100 mW/cm(2)).
authors: Electrotechnical Institute, Division of Electrotechnology and Materials Science, M. Sklodowskiej-Curie 55/61 Street, 50-369 Wroclaw, Poland. a.iwan@iel.wroc.pl
authors: Agnieszka
authors: A
authors: Iwan
authors: Marcin
authors: M
authors: Palewicz
authors: Michal
authors: M
authors: Krompiec
authors: Marzena
authors: M
authors: Grucela-Zajac
authors: Ewa
authors: E
authors: Schab-Balcerzak
authors: Andrzej
authors: A
authors: Sikora
mesh_terms: D000042:Absorption; D001391:Azo Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D052160:Benzothiazoles / Q000737:chemistry*; D004560:Electricity; D055664:Electrochemical Techniques; D004952:Esters / Q000737:chemistry; D049449:Luminescence; D018625:Microscopy, Atomic Force; D055620:Optical Phenomena; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013876:Thiophenes / Q000737:chemistry; D013882:Thiosemicarbazones / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D052160:Benzothiazoles; D004952:Esters; D013876:Thiophenes; D013882:Thiosemicarbazones; C512188:azomethine; C005465:benzothiazole