Optimizing Morphology to Trade Off Charge Transport and Mechanical Properties of Stretchable Conjugated Polymer Films

2021 ◽  
Author(s):  
Zicheng Ding ◽  
Dongle Liu ◽  
Kui Zhao ◽  
Yanchun Han
Keyword(s):  
Mechanical Properties ◽  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Trade Off

scholarly journals Solvent-dependent self-assembly and ordering in slow-drying drop-cast conjugated polymer films

2015 ◽  
Vol 3 (38) ◽  
pp. 9842-9848 ◽  
Author(s):  
Kui Zhao ◽  
Xinhong Yu ◽  
Ruipeng Li ◽  
Aram Amassian ◽  
Yanchun Han
Keyword(s):  
Thin Films ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Polymer Films ◽  
Self Assembly ◽  
Conjugated Polymer ◽  
Optoelectronic Properties ◽  
Microstructure Development ◽  
Mechanistic Understanding ◽  
Semiconducting Thin Films

The mechanistic understanding of the intrinsic molecular self-assembly of conjugated polymers is of immense importance to control the microstructure development in organic semiconducting thin films, with a meaningful impact on charge transport and optoelectronic properties.

Band bending in conjugated polymer films: role of morphology and implications for bulk charge transport characteristics

2017 ◽  
Vol 5 (30) ◽  
pp. 7446-7451 ◽  
Author(s):  
J. K. Wenderott ◽  
Ban Xuan Dong ◽  
Peter F. Green
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Band Bending ◽  
Force Microscopy ◽  
Bending Effect ◽  
Bulk Charge

The band bending effect depends on the morphology of the conjugated polymer as studied by Kelvin probe force microscopy.

Influence of morphological disorder on in- and out-of-plane charge transport in conjugated polymer films

2015 ◽  
Vol 5 (4) ◽  
pp. 593-598 ◽  
Author(s):  
Anton Li ◽  
Ban Xuan Dong ◽  
Peter F. Green
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Out Of Plane ◽  
Image Position

Abstract

Facile fabrication of large area oriented conjugated polymer films by ribbon-shaped FTM and its implication on anisotropic charge transport

2019 ◽  
Vol 65 ◽  
pp. 1-7 ◽  
Author(s):  
Atul S.M. Tripathi ◽  
Nikita Kumari ◽  
Shuichi Nagamatsu ◽  
Shuzi Hayase ◽  
Shyam S. Pandey
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Large Area ◽  
Facile Fabrication

scholarly journals The Effects of Crystallinity on Charge Transport and the Structure of Sequentially Processed F4 TCNQ-Doped Conjugated Polymer Films

2017 ◽  
Vol 27 (44) ◽  
pp. 1702654 ◽  
Author(s):  
D. Tyler Scholes ◽  
Patrick Y. Yee ◽  
Jeffrey R. Lindemuth ◽  
Hyeyeon Kang ◽  
Jonathan Onorato ◽  
...  
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer

scholarly journals Influence of morphological disorder on in- and out-of-plane charge transport in conjugated polymer films – ERRATUM

2015 ◽  
Vol 5 (4) ◽  
pp. 646-646
Author(s):  
Anton Li ◽  
Ban Xuan Dong ◽  
Peter F. Green
Keyword(s):  
Charge Transport ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Out Of Plane

Scanning-tunneling spectroscopy on conjugated polymer films

2003 ◽  
Vol 771 ◽  
Author(s):  
M. Kemerink ◽  
S.F. Alvarado ◽  
P.M. Koenraad ◽  
R.A.J. Janssen ◽  
H.W.M. Salemink ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Direct Consequence ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Band Alignment ◽  
Scanning Tunneling ◽  
Order Of Magnitude

AbstractScanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

Endgroup and Sidechain Functionalization of Surface-Initiated ROMP Thin Films: Progress Towards ROMP-Based Molecular Wires

2018 ◽  
Author(s):  
Nicholas Marshall
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Cyclic Voltammetry ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Ring Opening ◽  
Molecular Wires ◽  
Metathesis Polymerization ◽  
Cross Metathesis ◽  
Active Ester

A set of experiments in surface-initiated ring-opening metathesis polymerization, including end-functionalization of growing brushes and contact angle/cyclic voltammetry measurements. We report preparation and CV of two different conjugated polymer films, and several endgroup and sidechain functionalization experiments using cross-metathesis and active ester substitution.<br>

Polylactide-based stent coatings: biodegradable polymeric coatings capable of maintaining sustained release of the thrombolytic enzyme streptokinase

2020 ◽  
Vol 92 (8) ◽  
pp. 1329-1340
Author(s):  
A. G. Kolmakov ◽  
A. S. Baikin ◽  
S. V. Gudkov ◽  
K. N. Belosludtsev ◽  
E. O. Nasakina ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Films ◽  
De Novo ◽  
Membrane Surface ◽  
Aqueous Media ◽  
Polymeric Coatings ◽  
Short Term ◽  
Thrombolytic Activity ◽  
Viable Cells ◽  
Nitinol Stents

AbstractThe paper describes synthesis and testing of novel biodegradable polylactide-based polymer membranes with desired mechanical properties, which are capable of sustained and directed release of biomacromolecules with high molecular weight (in particular, streptokinase; m.w. 47 kDa). Streptokinase is a pharmaceutical agent, possessing a pronounced thrombolytic activity. The membranes synthesized had a percentage elongation of 2–11% and tensile strength of 25–85 MPa. They were biodegradable – yet being stored in aqueous media in the absence of biological objects, would be dissolved by no more than 10% in 6 months. The synthesized membranes were capable of controlled release of streptokinase into the intercellular space, with the enzyme retaining more than 90% of its initial activity. The rate of streptokinase release from the membranes varied from 0.01 to 0.04 mg/day per cm2 of membrane surface. The membrane samples tested in the work did not have any short-term toxic effects on the cells growing de novo on the membrane surface. The mitotic index of those cells was approximately 1.5%, and the number of non-viable cells on the surface of the polymer films did not exceed 3–4% of their total amount. The implantation of the synthesized polymers – as both individual films and coatings of nitinol stents – was not accompanied by any postoperative complications. The subsequent histological examination revealed no abnormalities. Two months after the implantation of polymer films, only traces of polylactide were found in the implant-surrounding tissues. The implantation of stents coated with streptokinase-containing polymers resulted in the formation of a mature and thick connective-tissue capsules. Thus, the polylactide membranes synthesized and tested in this work are biodegradable, possess the necessary mechanical properties and are capable of sustained and directed release of streptokinase macromolecules.

scholarly journals Conjugated Polymer Films Having a Uniaxial Molecular Orientation and Network Structure Prepared by Electrochemical Polymerization in Liquid Crystals

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2425
Author(s):  
Jiuchao Dong ◽  
Shigeki Nimori ◽  
Hiromasa Goto
Keyword(s):  
Liquid Crystals ◽  
Network Structure ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Main Chain ◽  
Electrochemical Polymerization ◽  
Electronic Devices ◽  
New Method ◽  
Magnetic Orientation ◽  
Organic Electronic Devices

A new method for fabricating conjugated polymer films was developed using electrochemical polymerization in liquid crystals and magnetic orientation. A uniaxial main chain orientation and a crosslinked network structure were achieved with this method. By employing eight types of monomers, the influence of the crosslinking for the film was investigated. The crosslinking was found to improve the solvent resistance of the conjugated polymer films. This new method is expected to be useful in various applications, such as high-powered organic electronic devices with durability.

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