Synthesis and optoelectronic properties of benzodithiophene-based conjugated polymers with hydrogen bonding nucleobase side chain functionality

2020 ◽  
Vol 11 (36) ◽  
pp. 5735-5749
Author(s):  
Sina Sabury ◽  
Tyler J. Adams ◽  
Margaret Kocherga ◽  
S. Michael Kilbey ◽  
Michael G. Walter
Keyword(s):  
Thin Films ◽  
Hydrogen Bonding ◽  
Conjugated Polymers ◽  
Electronic Properties ◽  
Molecular Assembly ◽  
Optoelectronic Properties ◽  
Side Chain ◽  
Alternating Copolymers ◽  
Optical And Electronic Properties

Nucleobase functionalities in conjugated, alternating copolymers participate in interbase hydrogen bonding, which promotes molecular assembly and organization in thin films and enhances optical and electronic properties.

scholarly journals Direct observation of backbone planarization via side-chain alignment in single bulky-substituted polythiophenes

2018 ◽  
Vol 115 (11) ◽  
pp. 2699-2704 ◽  
Author(s):  
Dominic Raithel ◽  
Lena Simine ◽  
Sebastian Pickel ◽  
Konstantin Schötz ◽  
Fabian Panzer ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Electronic Properties ◽  
Red Shift ◽  
Structural Motif ◽  
Side Chain ◽  
Side Chains ◽  
Single Chain ◽  
Optical And Electronic Properties ◽  
Backbone Conformation ◽  
The Impact

The backbone conformation of conjugated polymers affects, to a large extent, their optical and electronic properties. The usually flexible substituents provide solubility and influence the packing behavior of conjugated polymers in films or in bad solvents. However, the role of the side chains in determining and potentially controlling the backbone conformation, and thus the optical and electronic properties on the single polymer level, is currently under debate. Here, we investigate directly the impact of the side chains by studying the bulky-substituted poly(3-(2,5-dioctylphenyl)thiophene) (PDOPT) and the common poly(3-hexylthiophene) (P3HT), both with a defined molecular weight and high regioregularity, using low-temperature single-chain photoluminescence (PL) spectroscopy and quantum-classical simulations. Surprisingly, the optical transition energy of PDOPT is significantly (∼2,000 cm−1 or 0.25 eV) red-shifted relative to P3HT despite a higher static and dynamic disorder in the former. We ascribe this red shift to a side-chain induced backbone planarization in PDOPT, supported by temperature-dependent ensemble PL spectroscopy. Our atomistic simulations reveal that the bulkier 2,5-dioctylphenyl side chains of PDOPT adopt a clear secondary helical structural motif and thus protect conjugation, i.e., enforce backbone planarity, whereas, for P3HT, this is not the case. These different degrees of planarity in both thiophenes do not result in different conjugation lengths, which we found to be similar. It is rather the stronger electronic coupling between the repeating units in the more planar PDOPT which gives rise to the observed spectral red shift as well as to a reduced calculated electron−hole polarization.

Self-Assembled Gold Nanoparticle Thin Films with Nonmetallic Optical and Electronic Properties

Langmuir ◽  
1998 ◽  
Vol 14 (19) ◽  
pp. 5425-5429 ◽  
Author(s):  
Mathias Brust ◽  
Donald Bethell ◽  
Christopher J. Kiely ◽  
David J. Schiffrin
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Gold Nanoparticle ◽  
Optical And Electronic Properties ◽  
Self Assembled

Optical and electronic properties for As-60 at.% S uniform thickness of thin films: Influence of Se content

2020 ◽  
Vol 109 ◽  
pp. 110257 ◽  
Author(s):  
Ammar Qasem ◽  
M.Y. Hassaan ◽  
M.G. Moustafa ◽  
Mohamed A.S. Hammam ◽  
H.Y. Zahran ◽  
...  
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Uniform Thickness ◽  
Optical And Electronic Properties

Polypyrrole derivatives for optoelectronic applications: a DFT study on the influence of side groups

2019 ◽  
Vol 21 (32) ◽  
pp. 17729-17739 ◽  
Author(s):  
Alex Pifer Coleone ◽  
Leonardo Gois Lascane ◽  
Augusto Batagin-Neto
Keyword(s):  
Dft Calculations ◽  
Electronic Properties ◽  
Optoelectronic Properties ◽  
Dft Study ◽  
Optical And Electronic Properties ◽  
Optoelectronic Applications

DFT calculations were used to evaluate the effect of side groups on the structural, optical and electronic properties of 3-substituted PPy derivatives. Simple relationships between the optoelectronic properties and Hammet parameters are proposed.

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.

Optical and electronic properties of highly stable and textured hydrogenated ZnO:Al thin films

2012 ◽  
Vol 47 (9) ◽  
pp. 2487-2491 ◽  
Author(s):  
Younghun Hwang ◽  
Hyungmin Kim ◽  
Youngho Um ◽  
Hyoyeol Park
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Optical And Electronic Properties

Optical and electronic properties of one-dimensional Ca3Co2O6 thin films: Influence of the oxygen pressure

2009 ◽  
Vol 94 (14) ◽  
pp. 141907 ◽  
Author(s):  
R. Moubah ◽  
S. Colis ◽  
G. Schmerber ◽  
J. Petersen ◽  
A. Dinia
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Oxygen Pressure ◽  
One Dimensional ◽  
Optical And Electronic Properties
Sign in / Sign up

Export Citation Format

Share Document