Molecular and charge mobility of a poloxamer in the bulk and as soft component in polyurethanes

Polymer ◽  
2019 ◽  
Vol 182 ◽  
pp. 121821 ◽  
Author(s):  
Konstantinos N. Raftopoulos ◽  
Izabela Łukaszewska ◽  
Panagiotis Α. Klonos ◽  
Edyta Hebda ◽  
Artur Bukowczan ◽  
...  
Keyword(s):  
Soft Component ◽  
Charge Mobility

The Influence of Nitrogen Position on Charge Carrier Mobility in Enantiopure Aza[6]helicene Crystals

2018 ◽  
Author(s):  
Francesco Salerno ◽  
Beth Rice ◽  
Julia Schmidt ◽  
Matthew J. Fuchter ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Chemical Structure ◽  
Crystal Packing ◽  
Charge Carrier Mobility ◽  
Individual Factor ◽  
Charge Mobility ◽  
Order Of Magnitude ◽  
Small Change

<p>The properties of an organic semiconductor are dependent on both the chemical structure of the molecule involved, and how it is arranged in the solid-state. It is challenging to extract the influence of each individual factor, as small changes in the molecular structure often dramatically change the crystal packing and hence solid-state structure. Here, we use calculations to explore the influence of the nitrogen position on the charge mobility of a chiral organic molecule when the crystal packing is kept constant. The transfer integrals for a series of enantiopure aza[6]helicene crystals sharing the same packing were analysed in order to identify the best supramolecular motifs to promote charge carrier mobility. The regioisomers considered differ only in the positioning of the nitrogen atom in the aromatic scaffold. The simulations showed that even this small change in the chemical structure has a strong effect on the charge transport in the crystal, leading to differences in charge mobility of up to one order of magnitude. Some aza[6]helicene isomers that were packed interlocked with each other showed high HOMO-HOMO integrals (up to 70 meV), whilst molecules arranged with translational symmetry generally afforded the highest LUMO-LUMO integrals (40 - 70 meV). As many of the results are not intuitively obvious, a computational approach provides additional insight into the design of new semiconducting organic materials.</p>

Assembly effect on the charge carrier mobility in quaterthiophene-based n/p-materials

2019 ◽  
Vol 7 (22) ◽  
pp. 6649-6655
Author(s):  
A. López-Andarias ◽  
C. Atienza ◽  
J. López-Andarias ◽  
W. Matsuda ◽  
T. Sakurai ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Self Assembly ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Assembly Process ◽  
Charge Mobility

Effect of the peptide-based quaterthiophene self-assembly process on the charge mobility properties of the n/p-materials formed is studied.

The nature of the soft component of the cosmic radiation

1939 ◽  
Vol 227 (3) ◽  
pp. 419-421
Author(s):  
C.G. Montgomery ◽  
D.D. Montgomery
Keyword(s):  
Cosmic Radiation ◽  
Soft Component

Solid-State Order and Charge Mobility in [5]- to [12]Cycloparaphenylenes

2018 ◽  
Vol 141 (2) ◽  
pp. 952-960 ◽  
Author(s):  
Janice B. Lin ◽  
Evan R. Darzi ◽  
Ramesh Jasti ◽  
Ilhan Yavuz ◽  
K. N. Houk
Keyword(s):  
Solid State ◽  
Charge Mobility

A metrology perspective on the dark injection transient current method for charge mobility determination in organic semiconductors

2011 ◽  
Vol 109 (9) ◽  
pp. 093707 ◽  
Author(s):  
T. Esward ◽  
S. Knox ◽  
H. Jones ◽  
P. Brewer ◽  
C. Murphy ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Current Method ◽  
Transient Current ◽  
Charge Mobility

COLLISION INDUCED FRAGMENTATION OF FULLERENE CLUSTERS (C60)n

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2345-2352 ◽  
Author(s):  
B. MANIL ◽  
P. BODUCH ◽  
A. CASSIMI ◽  
O. KAMALOU ◽  
L. MAUNOURY ◽  
...  
Keyword(s):  
Collision Energy ◽  
Thermal Dissociation ◽  
Carbon Clusters ◽  
Size Distributions ◽  
Charge Mobility ◽  
Flight Mass Spectrometry ◽  
Singly Charged ◽  
Doubly Charged ◽  
Fullerene Clusters ◽  
Large Charge

Clusters of C 60 fullerenes are (multi)-ionised in collisions with O 5+ projectiles at a collision energy of 100 keV. The dominant fragmentation channels are analysed by time-of-flight mass spectrometry for different cluster size distributions. Singly charged [Formula: see text], ions are found to be the dominant fragments, in 25% connected with the loss of one or more C 2-units. This result is explained by the large charge mobility in fullerene clusters. Doubly charged fragments, in form of [Formula: see text] and [Formula: see text], contribute to the observed spectrum with less than 5–10% only and are mainly attributed to the fragmentation of dimers. Singly charged small carbon clusters in the size range n = 7 to 19 are formed with low kinetic energies indicating the importance of thermal dissociation processes. The present experiments confirm earlier conclusions on the charge mobility in fullerene clusters.

2,6-Bis[2-(4-pentylphenyl)vinyl]anthracene:  A Stable and High Charge Mobility Organic Semiconductor with Densely Packed Crystal Structure

2006 ◽  
Vol 128 (29) ◽  
pp. 9304-9305 ◽  
Author(s):  
Hong Meng ◽  
Fangping Sun ◽  
Marc B. Goldfinger ◽  
Feng Gao ◽  
David J. Londono ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Organic Semiconductor ◽  
Charge Mobility ◽  
High Charge

Core Structure in Soft Component Showers

1954 ◽  
Vol 95 (2) ◽  
pp. 516-521 ◽  
Author(s):  
H. S. Green ◽  
O. Bergmann
Keyword(s):  
Core Structure ◽  
Soft Component

The charge mobility in polymer LEDs-the low frequency impedance method

2003 ◽  
Vol 135-136 ◽  
pp. 5-6
Author(s):  
I.N. Hulea ◽  
H.B. Brom ◽  
K. Brunner ◽  
R.F.J.v.d. Scheer ◽  
M.A.J. Michels
Keyword(s):  
Low Frequency ◽  
Impedance Method ◽  
Charge Mobility ◽  
Polymer Leds
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