[EN] FLUORINATED AROMATIC MATERIALS AND THEIR USE IN OPTOELECTRONICS<br/>[FR] MATIÈRES AROMATIQUES FLUORÉES ET LEUR UTILISATION EN OPTOÉLECTRONIQUE
申请人:UNIV SOUTH DAKOTA
公开号:WO2011022678A1
公开(公告)日:2011-02-24
Fluorinated aromatic materials, their synthesis and their use in optoelectronics. In some cases, the fluorinated aromatic materials are perfluoroalkylated aromatic materials that may include perfluoropolyether substituents.
Strengthening π–π Interactions While Suppressing C<sub>sp2</sub>–H···π (T-Shaped) Interactions via Perfluoroalkylation: A Crystallographic and Computational Study That Supports the Beneficial Formation of 1-D π–π Stacked Aromatic Materials
作者:Haoran Sun、Usha K. Tottempudi、Jeffery D. Mottishaw、Prem N. Basa、Anjaneyulu Putta、Andrew G. Sykes
DOI:10.1021/cg301151u
日期:2012.11.7
The design and synthesis of aromatic crystalline materials with controllable crystal structure packing is of particular interest in organic semiconductor and optoelectronic devices, where 1-D pi-pi stacked structures that enhance charge mobility are the most beneficial. We report here that the pi-pi interactions between aromatic molecules can be strengthened and the C-sp2-H center dot center dot center dot pi (T-shape) interaction can be suppressed by perfluoroalkylation of corresponding aromatics. Both crystal structure data and ab initio calculations show that the pi-pi interaction is strengthened due to the electronic effects of perfluoroalkyl substituents, and the C-sp2-H center dot center dot center dot pi interaction is suppressed by the steric effects of the perfluoroalkyl substituents. The C-sp3-F center dot center dot center dot F-C-sp3 attractive interactions between perfluoroalkyl chains further stabilize the crystal structures. We also found that C-sp3-F center dot center dot center dot pi interaction can be eliminated if an optimal electron deficiency of the pi system is tuned by adjusting the number of perfluoroalkyl substituents. The insight gained from this study is of particular interest in organic semiconductor research as well as the fields of molecular recognition, sensing, and design of enzyme inhibitors where pi-pi interactions are also important.
FLUORINATED AROMATIC MATERIALS AND THEIR USE IN OPTOELECTRONICS
申请人:The University Of South Dakota
公开号:EP2467353A1
公开(公告)日:2012-06-27
FLUORINATED AROMATIC MATERIALS AND THEIR USE IN OPTOELECTRONICS
申请人:The University of South Dakota
公开号:US20150207078A1
公开(公告)日:2015-07-23
Fluorinated aromatic materials, their synthesis and their use in optoelectronics. In some cases, the fluorinated aromatic materials are perfluoroalkylated aromatic materials that may include perfluoropolyether substituents.