Synthesis of 3,7-diiodo-2,6-di(thiophen-2-yl)benzo[1,2-b:4,5-b′]difurans: functional building blocks for the design of new conjugated polymers

2012 ◽  
Vol 48 (71) ◽  
pp. 8919 ◽  
Author(s):  
Brandon M. Kobilka ◽  
Anton V. Dubrovskiy ◽  
Monique D. Ewan ◽  
Aimée L. Tomlinson ◽  
Richard C. Larock ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Blocks

scholarly journals Synthesis of π-Conjugated Polymers Containing Benzotriazole Units via Palladium-Catalyzed Direct C-H Cross-Coupling Polycondensation for OLEDs Applications

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 254
Author(s):  
Dong Han ◽  
Jingwen Li ◽  
Qiang Zhang ◽  
Zewang He ◽  
Zhiwei Wu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Quantum Efficiency ◽  
Cross Coupling ◽  
Building Blocks ◽  
Gravimetric Analysis ◽  
19F Nmr Spectra ◽  
Light Emitting ◽  
Molecular Weights ◽  
Palladium Catalyzed ◽  
Red Luminescence

Four D-π-A conjugated polymers, namely P1–P4, which contain benzotriazole building blocks in their backbone as acceptor, are synthesized via palladium-catalyzed direct C-H cross-coupling polycondensation of 5,6-difluorobenzotriazole with different thiophene derivatives, including 3-octylthiophene, 2,2’-bithiophene, thieno[3,4-b][1,4]dioxine, and 4,4-dioctyl-4H-silolo-[3,2-b:4,5-b’]dithiophene as donor units, respectively. Taking the polymer P1 as an example, the chemical structure of the polymer is demonstrated by 1H and 19F NMR spectra. The optical, electrochemical, and thermal properties of these polymers are assessed by UV–vis absorption and fluorescence spectroscopy, cyclic voltammetry (CV), and thermal gravimetric analysis (TGA), respectively. DFT simulations of all polymers are also performed to understand their physicochemical properties. Furthermore, P1 and P2, which have relatively higher molecular weights and better fluorescent quantum efficiency than those of P3 and P4, are utilized as lighting emitters for organic light-emitting diodes (OLEDs), affording promising green and red luminescence with 0.07% and 0.14% of maximum external quantum efficiency, respectively, based on a device with an architecture of ITO/PEDOT:PSS/PTAA/the polymer emitting layer/TPBi/LiF/Al.

Structure Design for High Performance n-Type Polymer Thermoelectric Materials

2021 ◽  
Author(s):  
Qi Zhang ◽  
Hengda Sun ◽  
Meifang Zhu
Keyword(s):  
Conjugated Polymers ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Waste Heat ◽  
Building Blocks ◽  
Structure Design ◽  
Potential Candidate ◽  
Polymer Backbone ◽  
P Type ◽  
Polymer Thermoelectric

Abstract Organic thermoelectric (OTE) materials have been regarded as a potential candidate to harvest waste heat from complex, low temperature surfaces of objects and convert it into electricity. Recently, n-type conjugated polymers as organic thermoelectric materials have aroused intensive research in order to improve their performance to match up with their p-type counterpart. In this review, we discuss aspects that affect the performance of n-type OTEs, and further focus on the effect of planarity of backbone on doping efficiency and eventually the TE performance. We then summarize strategies such as implementing rigid n-type polymer backbone or modifying conventional polymer building blocks for more planar conformation. In the outlook part, we conclude forementioned devotions and point out new possibility that may promote the future development of this field.

Well-defined alternative polymer semiconductor using large size regioregular building blocks as monomers: electrical and electrochemical properties

2018 ◽  
Vol 6 (21) ◽  
pp. 5662-5670 ◽  
Author(s):  
Bogyu Lim ◽  
Dang Xuan Long ◽  
Song-Yi Han ◽  
Yoon-Chae Nah ◽  
Yong-Young Noh
Keyword(s):  
Molecular Weight ◽  
Conjugated Polymers ◽  
Electrochemical Properties ◽  
Building Blocks ◽  
Synthetic Strategy ◽  
Large Size ◽  
Large Molecular Weight ◽  
Polymer Semiconductor

We report an effective synthetic strategy to achieve well-defined regioregular alternative conjugated polymers using large molecular weight regioregular monomers.

High-Mobility Conjugated Polymers Based on Fused-Thiophene Building Blocks

2011 ◽  
Vol 212 (5) ◽  
pp. 428-443 ◽  
Author(s):  
Yao Liu ◽  
Yunqi Liu ◽  
Xiaowei Zhan
Keyword(s):  
Conjugated Polymers ◽  
High Mobility ◽  
Building Blocks

Effect of fluorination and symmetry on the properties of polymeric photovoltaic materials based on an asymmetric building block

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90051-90060 ◽  
Author(s):  
Xiaochen Wang ◽  
Ailing Tang ◽  
Yu Chen ◽  
Asif Mahmood ◽  
Jianhui Hou ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Block ◽  
Energy Levels ◽  
Building Blocks ◽  
Asymmetric Building ◽  
Photovoltaic Materials

Introducing fluorine on benzothiadiazole unit significantly influenced the properties of DTPa and BTs based conjugated polymers by tuning the energy levels and symmetry of the building blocks.

π-Conjugation expanded isoindigo derivatives and the donor–acceptor conjugated polymers: synthesis and characterization

2018 ◽  
Vol 54 (7) ◽  
pp. 782-785 ◽  
Author(s):  
Hao Song ◽  
Yunfeng Deng ◽  
Yu Jiang ◽  
Hongkun Tian ◽  
Yanhou Geng
Keyword(s):  
Conjugated Polymers ◽  
Building Blocks ◽  
Synthesis And Characterization ◽  
Donor Acceptor

π-Conjugation expanded isoindigo derivatives were synthesized via intramolecular Friedel–Crafts acylation, which are promising building blocks for ambipolar conjugated polymers.

Donor–acceptor conjugated polymers based on multifused ladder-type arenes for organic solar cells

2015 ◽  
Vol 44 (5) ◽  
pp. 1113-1154 ◽  
Author(s):  
Jhong-Sian Wu ◽  
Sheng-Wen Cheng ◽  
Yen-Ju Cheng ◽  
Chain-Shu Hsu
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Organic Solar Cells ◽  
Building Blocks ◽  
Donor Acceptor ◽  
Conjugated Copolymers

In this review, we summarize the recent development of the multifused ladder-type conjugated building blocks for making donor–acceptor conjugated copolymers.

Lactone-fused electron-deficient building blocks for n-type polymer field-effect transistors: synthesis, properties, and impact of alkyl substitution positions

2016 ◽  
Vol 7 (12) ◽  
pp. 2264-2271 ◽  
Author(s):  
Xiao-Ye Wang ◽  
Meng-Wen Zhang ◽  
Fang-Dong Zhuang ◽  
Jie-Yu Wang ◽  
Jian Pei
Keyword(s):  
Conjugated Polymers ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Building Blocks ◽  
Design Concept ◽  
Polymer Semiconductors ◽  
Alkyl Substitution ◽  
Synthesis Properties

Dilactone-based Pechmann dyes were incorporated into conjugated polymers for n-type field-effect transistors, providing a new design concept of electron-deficient building blocks for polymer semiconductors.

Hierarchically Structured Conjugated Polymers

2009 ◽  
Vol 1236 ◽  
Author(s):  
Holger Frauenrath
Keyword(s):  
Conjugated Polymers ◽  
Materials Science ◽  
Electronic Materials ◽  
Hierarchical Structures ◽  
Science Research ◽  
Building Blocks ◽  
Polymer Materials ◽  
Molecular Precursors ◽  
Quaternary Structures ◽  
Uniform Diameter

AbstractFunctional carbonaceous materials, organic electronic materials, and polymer materials which "speak the language" of biomaterials in their propensity for hierarchical structure formation play a central role in current materials science research. In this context, we prepared hierarchically structured conjugated polymers from diacetylene macromonomers based on β-sheet-forming oligopeptide-polymer conjugates as supramolecular building blocks. The monomers gave rise to supramolecular polymers with a finite number of strands, a uniform diameter of a few nanometers, and defined superstructures. These were then converted into conjugated polymers under retention of their hierarchical structures, leading to poly(diacetylene)s with multiple-helical quaternary structures and a rich folding behavior. The diacetylene macromonomers served as a model system to improve our understanding of how to use hydrogen-bonding sites in order to control the placement of reactive molecular precursors for hierarchically structured organic materials.

scholarly journals Limitations of conjugated polymers as emitters in triplet-triplet annihilation upconversion

2021 ◽  
Author(s):  
Riley O'shea ◽  
Can Gao ◽  
Siobhan Bradley ◽  
Tze Cin Owyong ◽  
Na Wu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Blocks ◽  
Phenylene Vinylene ◽  
Triplet Triplet Annihilation

A series of poly(phenylene-vinylene)s (PPV) was synthesized with two monomer building blocks containing methoxy and 2-ethylhexyloxy (MEH) sidechains and sterically bulky fluorenyloxy sidechain. Variations in monomer incorporation were achieved by...

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