TY  - JOUR
AU  - Tomović, Aleksandar
AU  - Markesević, N.
AU  - Scarpellini, M.
AU  - Bovio, S.
AU  - Lucenti, E.
AU  - Milani, P.
AU  - Žikić, Radomir
AU  - Jovanović, Vladimir P.
AU  - Srdanov, V. I.
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/812
AB  - Owing to their low glass transition temperature, T-g, amorphous thin films of N,N'-bis(3-methylphenyl)-N,N'bis(phenyl)benzidine (TPD) undergo morphological changes even at room temperature. It has been noticed previously that exposure to UV light can increase apparent T-g of TPD films and thus stabilize their morphology. However, the reason behind increase in structural stability was not examined at the time. Here we present evidence that TPD molecules undergo photo-oxidation in air when exposed to lambda approximate to 350 nm radiation and that less than 5% of the photo-oxidized species are needed to prevent dewetting of thin TPD films. We propose that photo-oxidized TPD species bind strongly to both ordinary TPD molecules and to terminal hydroxyl groups at the substrate surface, which decreases mobility of TPD molecules and makes thin TPD film less prone to morphology changes.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Stabilization of N,N '-bis(3-methylphenyl)-N,N '-bis(phenyl)benzidine thin film morphology with UV light
EP  - 103
SP  - 99
VL  - 562
DO  - 10.1016/j.tsf.2014.03.081
ER  - 

@article{
author = "Tomović, Aleksandar and Markesević, N. and Scarpellini, M. and Bovio, S. and Lucenti, E. and Milani, P. and Žikić, Radomir and Jovanović, Vladimir P. and Srdanov, V. I.",
year = "2014",
abstract = "Owing to their low glass transition temperature, T-g, amorphous thin films of N,N'-bis(3-methylphenyl)-N,N'bis(phenyl)benzidine (TPD) undergo morphological changes even at room temperature. It has been noticed previously that exposure to UV light can increase apparent T-g of TPD films and thus stabilize their morphology. However, the reason behind increase in structural stability was not examined at the time. Here we present evidence that TPD molecules undergo photo-oxidation in air when exposed to lambda approximate to 350 nm radiation and that less than 5% of the photo-oxidized species are needed to prevent dewetting of thin TPD films. We propose that photo-oxidized TPD species bind strongly to both ordinary TPD molecules and to terminal hydroxyl groups at the substrate surface, which decreases mobility of TPD molecules and makes thin TPD film less prone to morphology changes.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Stabilization of N,N '-bis(3-methylphenyl)-N,N '-bis(phenyl)benzidine thin film morphology with UV light",
pages = "103-99",
volume = "562",
doi = "10.1016/j.tsf.2014.03.081"
}

Tomović, A., Markesević, N., Scarpellini, M., Bovio, S., Lucenti, E., Milani, P., Žikić, R., Jovanović, V. P.,& Srdanov, V. I.. (2014). Stabilization of N,N '-bis(3-methylphenyl)-N,N '-bis(phenyl)benzidine thin film morphology with UV light. in Thin Solid Films
Elsevier Science Sa, Lausanne., 562, 99-103.
https://doi.org/10.1016/j.tsf.2014.03.081

Tomović A, Markesević N, Scarpellini M, Bovio S, Lucenti E, Milani P, Žikić R, Jovanović VP, Srdanov VI. Stabilization of N,N '-bis(3-methylphenyl)-N,N '-bis(phenyl)benzidine thin film morphology with UV light. in Thin Solid Films. 2014;562:99-103.
doi:10.1016/j.tsf.2014.03.081 .

Tomović, Aleksandar, Markesević, N., Scarpellini, M., Bovio, S., Lucenti, E., Milani, P., Žikić, Radomir, Jovanović, Vladimir P., Srdanov, V. I., "Stabilization of N,N '-bis(3-methylphenyl)-N,N '-bis(phenyl)benzidine thin film morphology with UV light" in Thin Solid Films, 562 (2014):99-103,
https://doi.org/10.1016/j.tsf.2014.03.081 . .