Effects of stretching on the molecular packing structure of conjugated polymers with hydrogen bonding

2021 ◽  
Author(s):  
Eul-Yong Shin ◽  
Sungmin Park ◽  
Hyungju Ahn ◽  
Hyunjung Jin ◽  
In Soo Kim ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Conjugated Polymers ◽  
Polymer Films ◽  
Molecular Packing ◽  
Intermolecular Hydrogen Bonding ◽  
Packing Structure

PTO2-urea10 which forms intermolecular hydrogen bonding maintained its TFT mobility well due to improved crystallinity when PTO2-urea10 TFT was stretched despite damage to polymer films.

Hydrogen bond-modulated molecular packing and its applications in high-performance non-doped organic electroluminescence

2020 ◽  
Vol 7 (10) ◽  
pp. 2734-2740
Author(s):  
Yizhong Shi ◽  
Kai Wang ◽  
Youichi Tsuchiya ◽  
Wei Liu ◽  
Takeshi Komino ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
High Performance ◽  
Molecular Packing ◽  
Intermolecular Hydrogen Bonding ◽  
Supramolecular Framework ◽  
Organic Electroluminescence

Suitable intermolecular hydrogen bonding enables the formation of a fixed 3D supramolecular framework and suppresses the exciton nonradiative decays and quenching.

Interfacial Energetic Disorder Induced by the Molecular Packing Structure at the Conjugated Polymer-based Donor/Acceptor Heterojunction

2021 ◽  
Author(s):  
Ke Zhou ◽  
Yuxuan Liu ◽  
Yunxiang Xu ◽  
Hongbo Wu ◽  
Xiaobo Zhou ◽  
...  
Keyword(s):  
Polymer Films ◽  
Charge Separation ◽  
Conjugated Polymer ◽  
Crucial Role ◽  
Molecular Packing ◽  
Recombination Process ◽  
Packing Structure ◽  
Donor Acceptor ◽  
Energetic Disorder

The energetic disorder in conjugated polymer films plays a crucial role in determining the charge separation and recombination process at the donor/acceptor heterojunction, thus dominates the photocurrent and photovoltage in...

scholarly journals Exploring the Structural Chemistry of Pyrophosphoramides: N,N′,N″,N‴-Tetraisopropylpyrophosphoramide

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 149-163
Author(s):  
Duncan Micallef ◽  
Liana Vella-Zarb ◽  
Ulrich Baisch
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Room Temperature ◽  
Intermolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
X Ray

N,N′,N″,N‴-Tetraisopropylpyrophosphoramide 1 is a pyrophosphoramide with documented butyrylcholinesterase inhibition, a property shared with the more widely studied octamethylphosphoramide (Schradan). Unlike Schradan, 1 is a solid at room temperature making it one of a few known pyrophosphoramide solids. The crystal structure of 1 was determined by single-crystal X-ray diffraction and compared with that of other previously described solid pyrophosphoramides. The pyrophosphoramide discussed in this study was synthesised by reacting iso-propyl amine with pyrophosphoryl tetrachloride under anhydrous conditions. A unique supramolecular motif was observed when compared with previously published pyrophosphoramide structures having two different intermolecular hydrogen bonding synthons. Furthermore, the potential of a wider variety of supramolecular structures in which similar pyrophosphoramides can crystallise was recognised. Proton (1H) and Phosphorus 31 (31P) Nuclear Magnetic Resonance (NMR) spectroscopy, infrared (IR) spectroscopy, mass spectrometry (MS) were carried out to complete the analysis of the compound.

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