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Type of publication: Straipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)
Field of Science: Chemija / Chemistry (N003)
Author(s): Lengvinaitė, Simona;Gražulevičius, Juozas Vidas;Zhang, B;Xie, Zhi-Yuan;Grigalevičius, Saulius
Title: Cross-linkable fluorenyl-substituted aromatic amines for polymeric hole transporting networks
Is part of: Reactive & Functional Polymers. Amsterdam : Elsevier Science B.V, 2011, Vol. 71, iss. 5
Extent: p. 574-578
Date: 2011
Keywords: Aromatic amine;Cross-linkable material;Ionization potential;Light emitting diode
Abstract: Fluorenyl-substituted aromatic amines containing reactive oxetanyl groups have been synthesized. Full characterization of their structure by NMR-, IR- and mass spectrometry is presented. The synthesized materials were examined by various techniques including differential scanning calorimetry, thermo-gravimetry, electron photoemission spectrometry and xerographic time of flight technique. The electron photoemission spectra of the layers of the derivatives showed ionization potentials of 5.4-5.65 eV. These derivatives have been tested as hole transporting materials in bilayer OLEDs with Alq(3) as the emitter. The device with derivative containing benzidine core exhibited the best overall performance with turn-on voltage of similar to 2.5 V. a maximum luminance efficiency of 4 cd/A and maximum brightness of about 6000 cd/m(2). The derivative was also used for the preparation of cross-linked hole transporting layers by photoinduced polymerization. The layers obtained were also tested in light emitting diodes. The devices demonstrated maximum photometric efficiency of 1.65 cd/A and maximum brightness of about 3000 cd/m(2)
Affiliation(s): Kauno technologijos universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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