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@article{1422235,
author = {Belova, Valentina and Wagner, Benjamin and Reisz, Berthold and Zeiser, Clemens and Duva, Giuliano and Rozbořil, Jakub and Novák, Jiří and Gerlach, Alexander and Hinderhofer, Alexander and Schreibert, Frank},
article_location = {Washington D.C.},
article_number = {15},
doi = {http://dx.doi.org/10.1021/acs.jpcc.8b00787},
keywords = {organic semiconductors; perylene diimide derivatives; thin films; polymorphism; X-ray diffraction; atomic force microscopy; differential reflectance spectroscopy; ellipsometry; temperature-dependent photoluminescence},
language = {eng},
issn = {1932-7447},
journal = {Journal of Physical Chemistry C},
title = {Real-Time Structural and Optical Study of Growth and Packing Behavior of Perylene Diimide Derivative Thin Films: Influence of Side-Chain Modification},
url = {https://pubs.acs.org/doi/10.1021/acs.jpcc.8b00787},
volume = {122},
year = {2018}
}
TY - JOUR
ID - 1422235
AU - Belova, Valentina - Wagner, Benjamin - Reisz, Berthold - Zeiser, Clemens - Duva, Giuliano - Rozbořil, Jakub - Novák, Jiří - Gerlach, Alexander - Hinderhofer, Alexander - Schreibert, Frank
PY - 2018
TI - Real-Time Structural and Optical Study of Growth and Packing Behavior of Perylene Diimide Derivative Thin Films: Influence of Side-Chain Modification
JF - Journal of Physical Chemistry C
VL - 122
IS - 15
SP - 8589-8601
EP - 8589-8601
PB - American Chemical Society
SN - 19327447
KW - organic semiconductors
KW - perylene diimide derivatives
KW - thin films
KW - polymorphism
KW - X-ray diffraction
KW - atomic force microscopy
KW - differential reflectance spectroscopy
KW - ellipsometry
KW - temperature-dependent photoluminescence
UR - https://pubs.acs.org/doi/10.1021/acs.jpcc.8b00787
L2 - https://pubs.acs.org/doi/10.1021/acs.jpcc.8b00787
N2 - We study the growth of two n-type small-molecule organic semiconductors from the perylene diimide family: N,N'-bis-(2-ethylhexyl)dicyanoperylene-3,4:9,10-bis(dicarboximide) (PDIR-CN2) and N,N'-1H,1H-perfluorobutyl-dicjyanoperylene-3,4: 9,10-bis (dicarboximide) (PDIF-CN2) whose chemical structures differ only in the imide substituents, branched alkyl chains -C8H16 and linear fluoroalkyl chains -C4F7H2, respectively. Both types of substituents introduce some degree of steric hindrance for intermolecular interactions, affecting solid-state packing during thin film formation, and thus induce specific structure-dependent optoelectronic properties in thin films. The transition from an amorphous structure to crystalline domains with strong intermolecular coupling was followed in situ and in real time during growth. We investigated the structural and morphological properties by X-ray diffraction and atomic force microscopy as a function of the substrate temperature and chemical structure. We examined the relationship between the structural properties and thin film optical signatures probed via differential reflectance spectroscopy, ellipsometry, and temperature-dependent photoluminescence. A new crystalline PDIR-CN2 polymorph at high temperatures emerges. In addition, we observed in PDIF-CN2 that the fluorinated chains contribute to crystallization inhibition because of the higher overall steric hindrance compared to the alkyl chains.
ER -
BELOVA, Valentina, Benjamin WAGNER, Berthold REISZ, Clemens ZEISER, Giuliano DUVA, Jakub ROZBOŘIL, Jiří NOVÁK, Alexander GERLACH, Alexander HINDERHOFER and Frank SCHREIBERT. Real-Time Structural and Optical Study of Growth and Packing Behavior of Perylene Diimide Derivative Thin Films: Influence of Side-Chain Modification. \textit{Journal of Physical Chemistry C}. Washington D.C.: American Chemical Society, 2018, vol.~122, No~15, p.~8589-8601. ISSN~1932-7447. Available from: https://dx.doi.org/10.1021/acs.jpcc.8b00787.
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