Optical Activity of Heteroaromatic Conjugated Polymer Films Prepared by Asymmetric Electrochemical Polymerization in Cholesteric Liquid Crystals: Structural Function for Chiral Induction

2013 ◽  
Vol 46 (6) ◽  
pp. 2078-2091 ◽  
Author(s):  
Kohsuke Kawabata ◽  
Masaki Takeguchi ◽  
Hiromasa Goto
Keyword(s):  
Liquid Crystals ◽  
Optical Activity ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Electrochemical Polymerization ◽  
Structural Function ◽  
Cholesteric Liquid Crystals ◽  
Chiral Induction

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.

scholarly journals Optical Activity of Homochiral Polyamides in Solution and Solid State: Structural Function for Chiral Induction

ACS Omega ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 2463-2469 ◽  
Author(s):  
Lingli Zhang ◽  
Chenxi Zhang ◽  
Wenjie Zhang ◽  
Zhe Cui ◽  
Peng Fu ◽  
...  
Keyword(s):  
Solid State ◽  
Optical Activity ◽  
Structural Function ◽  
Chiral Induction

Circularly polarized luminescence from structurally coloured polymer films

2021 ◽  
Author(s):  
Baining Ni ◽  
Yi Li ◽  
Wei Liu ◽  
Baozong Li ◽  
Hongkun Li ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Polymer Films ◽  
Cholesteric Liquid Crystals ◽  
Enhanced Fluorescence ◽  
Circularly Polarized ◽  
Fluorescence Efficiency ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
First Time

A strategy for the preparation of structurally coloured polymer films with strong circularly polarized luminescence and enhanced fluorescence efficiency based on cholesteric liquid crystals is presented for the first time.

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.

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