Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light
Autori
Tomović, AleksandarJovanović, Vladimir P.
Djurišić, Ivana
Cerovski, Viktor
Nastasijević, Branislav
Veličković, Suzana
Radulović, Katarina
Žikić, Radomir
Srdanov, Vojislav I.
Informativni prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
We studied degradation of 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl (DPVBi), well know OLED material. Thermally evaporated thin films of DPVBi were irradiated with UV light in ambient, vacuum and under different oxygen pressures. The cause of degradation is reaction between UV excited DPVBi molecules and oxygen, via formation of singlet oxygen or electron transfer from excited DPVBi to molecular oxygen. Reaction rates depend on oxygen concentration and UV light intensity. These reactions lead to formation of oxidized species as evidenced by ASAP and MALDI-TOF mass spectroscopy. Photoluminescence quenching has two parts. One part is reversible and may imply formation of charge transfer complexes and the other is irreversible, caused by formation of oxidized species. IR and absorption spectra are studied by Density Functional Theory and results compared with the experiment.
Ključne reči:
small organic molecule DPVBi thin films / UV-light induced film degradation / photoluminescence quenching / IR and UV-vis spectroscopy / ASAP and MALDI-TOF mass spectroscopyIzvor:
THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts, 2014, 100-Izdavač:
- Materials Research Society of Serbia
Finansiranje / projekti:
- Elektronske, transportne i optičke osobine nanofaznih materijala (RS-MESTD-Basic Research (BR or ON)-171033)
- Integralna studija identifikacije regionalnih genetskih faktora rizika i faktora rizika životne sredine za masovne nezarazne bolesti humane populacije u Srbiji - INGEMA_S (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-41028)
Napomena:
- SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Hunguest Hotel Sun Resort Herceg Novi, Montenegro, September 1-5, 2014
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Tomović, Aleksandar AU - Jovanović, Vladimir P. AU - Djurišić, Ivana AU - Cerovski, Viktor AU - Nastasijević, Branislav AU - Veličković, Suzana AU - Radulović, Katarina AU - Žikić, Radomir AU - Srdanov, Vojislav I. PY - 2014 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1902 AB - We studied degradation of 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl (DPVBi), well know OLED material. Thermally evaporated thin films of DPVBi were irradiated with UV light in ambient, vacuum and under different oxygen pressures. The cause of degradation is reaction between UV excited DPVBi molecules and oxygen, via formation of singlet oxygen or electron transfer from excited DPVBi to molecular oxygen. Reaction rates depend on oxygen concentration and UV light intensity. These reactions lead to formation of oxidized species as evidenced by ASAP and MALDI-TOF mass spectroscopy. Photoluminescence quenching has two parts. One part is reversible and may imply formation of charge transfer complexes and the other is irreversible, caused by formation of oxidized species. IR and absorption spectra are studied by Density Functional Theory and results compared with the experiment. PB - Materials Research Society of Serbia T2 - THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts T1 - Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light SP - 100 UR - https://hdl.handle.net/21.15107/rcub_rimsi_1902 ER -
@article{ author = "Tomović, Aleksandar and Jovanović, Vladimir P. and Djurišić, Ivana and Cerovski, Viktor and Nastasijević, Branislav and Veličković, Suzana and Radulović, Katarina and Žikić, Radomir and Srdanov, Vojislav I.", year = "2014", abstract = "We studied degradation of 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl (DPVBi), well know OLED material. Thermally evaporated thin films of DPVBi were irradiated with UV light in ambient, vacuum and under different oxygen pressures. The cause of degradation is reaction between UV excited DPVBi molecules and oxygen, via formation of singlet oxygen or electron transfer from excited DPVBi to molecular oxygen. Reaction rates depend on oxygen concentration and UV light intensity. These reactions lead to formation of oxidized species as evidenced by ASAP and MALDI-TOF mass spectroscopy. Photoluminescence quenching has two parts. One part is reversible and may imply formation of charge transfer complexes and the other is irreversible, caused by formation of oxidized species. IR and absorption spectra are studied by Density Functional Theory and results compared with the experiment.", publisher = "Materials Research Society of Serbia", journal = "THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts", title = "Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light", pages = "100", url = "https://hdl.handle.net/21.15107/rcub_rimsi_1902" }
Tomović, A., Jovanović, V. P., Djurišić, I., Cerovski, V., Nastasijević, B., Veličković, S., Radulović, K., Žikić, R.,& Srdanov, V. I.. (2014). Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light. in THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts Materials Research Society of Serbia., 100. https://hdl.handle.net/21.15107/rcub_rimsi_1902
Tomović A, Jovanović VP, Djurišić I, Cerovski V, Nastasijević B, Veličković S, Radulović K, Žikić R, Srdanov VI. Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light. in THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts. 2014;:100. https://hdl.handle.net/21.15107/rcub_rimsi_1902 .
Tomović, Aleksandar, Jovanović, Vladimir P., Djurišić, Ivana, Cerovski, Viktor, Nastasijević, Branislav, Veličković, Suzana, Radulović, Katarina, Žikić, Radomir, Srdanov, Vojislav I., "Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light" in THE SIXTEENTH ANNUAL CONFERENCE YUCOMAT 2014 Programme and The Book of Abstracts (2014):100, https://hdl.handle.net/21.15107/rcub_rimsi_1902 .