Inducing planarity in redox-active conjugated polymers with solubilizing 3,6-dialkoxy-thieno[3,2-b]thiophenes (DOTTs) for redox and solid-state conductivity applications

2020 ◽  
Vol 8 (22) ◽  
pp. 7463-7475 ◽  
Author(s):  
Sandra L. Pittelli ◽  
Shawn A. Gregory ◽  
James F. Ponder ◽  
Shannon K. Yee ◽  
John R. Reynolds
Keyword(s):  
Solid State ◽  
Conjugated Polymers ◽  
Electronic Properties ◽  
New Family ◽  
Redox Active ◽  
Optical And Electronic Properties

A new family of redox-active dioxythienothiophene (DOTT) polymers are studied for their solid state ordering and doping susceptibility, along with their optical and electronic properties.

A new aspect of cyclopentadithiophene based polymers: narrow band gap polymers upon protonation

2015 ◽  
Vol 51 (67) ◽  
pp. 13229-13232 ◽  
Author(s):  
Tao Tang ◽  
Tingting Lin ◽  
FuKe Wang ◽  
Chaobin He
Keyword(s):  
Conjugated Polymers ◽  
Band Gap ◽  
Electronic Properties ◽  
Narrow Band ◽  
Optical And Electronic Properties ◽  
Significant Change

A new aspect of CPDT based conjugated polymers that CPDT units in the polymers can be protonated with a significant change in optical and electronic properties was reported.

scholarly journals Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

2020 ◽  
Author(s):  
Jordann A.L. Wells ◽  
Muhammad Anwar Shameem ◽  
Arvind Kumar Gupta ◽  
Andreas Orthaber
Keyword(s):  
Double Bond ◽  
Solid State ◽  
Electronic Properties ◽  
Building Block ◽  
Metal Coordination ◽  
Bond Functionalization ◽  
Electronic Tuning ◽  
Optical And Electronic Properties ◽  
Donor And Acceptor ◽  
Solid State Structures

The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatilie building block for opto-electronic tuning with donor and acceptor moieties. Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transfomations, e.g. forming C-C, C-E (E = Si, Br) bonds or oxidation and metal coordination, respectively. Solid-state structures, optical and electronic properties are probed theoretically and experimentally, illustrating the opto-electronic tailoring opportunities at this motif.

Eco-Friendly Techniques to Synthesize Quantum Dots

2021 ◽  
pp. 1-52
Keyword(s):  
Quantum Dots ◽  
Particle Size ◽  
Solid State ◽  
Quantum Dot ◽  
Electronic Properties ◽  
Quantum Effects ◽  
Nano Technology ◽  
Major Topic ◽  
Optical And Electronic Properties ◽  
Wet Chemical

Quantum dot defines as a nanoparticle with particle size smaller than its exciton Bohr radius. Due to the remarkable quantum effects such as optical and electronic properties, they have attracted a great deal of attention by researchers and industries. Therefore, quantum dots have become a major topic in nano-technology. Here, we describe the most recent eco-friendly techniques that have been used to synthesize quantum dots, including biogenic methods, such as plant-mediated, microorganisms-mediated methods, wet chemical and solid-state methods.

Anthanthrene as a large PAH building block for the synthesis of conjugated polymers

2015 ◽  
Vol 6 (27) ◽  
pp. 4859-4863 ◽  
Author(s):  
Antoine Lafleur-Lambert ◽  
Jean-Benoît Giguère ◽  
Jean-Francois Morin
Keyword(s):  
Conjugated Polymers ◽  
Electronic Properties ◽  
Organic Electronics ◽  
Building Block ◽  
Low Cost ◽  
Optical And Electronic Properties

New anthanthrene-based conjugated polymers exhibiting promising optical and electronic properties for organic electronics applications were prepared from low-cost vat orange 3.

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.

Effect of Acceptor Strength on Optical and Electronic Properties in Conjugated Polymers for Solar Applications

2015 ◽  
Vol 137 (17) ◽  
pp. 5759-5769 ◽  
Author(s):  
Oluwasegun O. Adegoke ◽  
In Hwan Jung ◽  
Meghan Orr ◽  
Luping Yu ◽  
Theodore Goodson
Keyword(s):  
Conjugated Polymers ◽  
Electronic Properties ◽  
Optical And Electronic Properties ◽  
Solar Applications
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