Regioregularity-Control of Conjugated Polymers: From Synthesis, Properties, to Photovoltaic Device Applications

2022 ◽  
Author(s):  
Youngkwon Kim ◽  
Hyeonjung Park ◽  
Jin Su Park ◽  
Jin-Woo Lee ◽  
Hyeong Jun Kim ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Electronics ◽  
Photovoltaic Device ◽  
Molecular Structures ◽  
Synthesis Properties ◽  
Device Applications ◽  
The Relationship

In the last decade, extensive academic and industrial efforts have been devoted to developing efficient conjugated polymers (CPs) for organic electronics. Specifically, the relationship between the molecular structures, properties, and...

scholarly journals Conjugated Polymers Containing Building Blocks 1,3,4,6-Tetraarylpyrrolo[3,2-b]pyrrole-2,5-dione (isoDPP), Benzodipyrrolidone (BDP) or Naphthodipyrrolidone (NDP): A Review

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1683 ◽  
Author(s):  
Zhifeng Deng ◽  
Taotao Ai ◽  
Rui Li ◽  
Wei Yuan ◽  
Kaili Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
High Performance ◽  
Electronic Device ◽  
Building Blocks ◽  
Electrochemical Characteristics ◽  
The Novel ◽  
Synthesis Properties ◽  
Device Applications ◽  
Donor Acceptor ◽  
Better Than

π-Conjugated organic donor–acceptor (D–A) type polymers are widely developed and used in electronic device. Among which, diketopyrrolopyrrole (DPP)-based polymers have received the most attention due to their high performances. The novel chromophores named 1,3,4,6-tetraarylpyrrolo[3,2-b]pyrrole-2,5-dione (isoDPP), benzodipyrrolidone (BDP) and naphthodipyrrolidone (NDP) are resemble DPP in chemical structure. IsoDPP is an isomer of DPP, with the switching position of carbonyl and amide units. The cores of BDP and NDP are tri- and tetracyclic, whereas isoDPP is bicyclic. π-Conjugation extension could result polymers with distinct optical, electrochemical and device performance. It is expected that the polymers containing these high-performance electron-deficient pigments are potential in the electronic device applications, and have the potential to be better than the DPP-based ones. IsoDPP, BDP, and NDP based polymers are synthesized since 2011, and have not receive desirable attention. In this work, the synthesis, properties (optical and electrochemical characteristics), electronic device as well as their relationship depending on core-extension or structure subtle optimization have been reviewed. The final goal is to outline a theoretical scaffold for the design the D–A type conjugated polymers, which is potential for high-performance electronic devices.

Scanning tunneling microscopy (STM) of DNA and RNA

1989 ◽  
Vol 47 ◽  
pp. 34-35
Author(s):  
Patricia G. Arscott ◽  
Gil Lee ◽  
Victor A. Bloomfield ◽  
D. Fennell Evans
Keyword(s):  
Molecular Structures ◽  
Inorganic Materials ◽  
Resolving Power ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Form And Function ◽  
Dna And Rna ◽  
Calf Thymus ◽  
And Function ◽  
The Relationship

STM is one of the most promising techniques available for visualizing the fine details of biomolecular structure. It has been used to map the surface topography of inorganic materials in atomic dimensions, and thus has the resolving power not only to determine the conformation of small molecules but to distinguish site-specific features within a molecule. That level of detail is of critical importance in understanding the relationship between form and function in biological systems. The size, shape, and accessibility of molecular structures can be determined much more accurately by STM than by electron microscopy since no staining, shadowing or labeling with heavy metals is required, and there is no exposure to damaging radiation by electrons. Crystallography and most other physical techniques do not give information about individual molecules.We have obtained striking images of DNA and RNA, using calf thymus DNA and two synthetic polynucleotides, poly(dG-me5dC)·poly(dG-me5dC) and poly(rA)·poly(rU).

Efficient synthesis of π-extended phenazasilines for optical and electronic applications

2014 ◽  
Vol 50 (99) ◽  
pp. 15760-15763 ◽  
Author(s):  
Huanhuan Li ◽  
Yang Wang ◽  
Kai Yuan ◽  
Ye Tao ◽  
Runfeng Chen ◽  
...  
Keyword(s):  
Organic Electronics ◽  
Efficient Method ◽  
Optoelectronic Properties ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Device Applications

The rhodium-catalyzed synthesis of phenazasilines from readily achievable biarylhydrosilanes is presented. This highly efficient method offers opportunities for preparing π-extended phenazasilines with enhanced optoelectronic properties for device applications in organic electronics.

scholarly journals Relation between photochromic properties and molecular structures in salicylideneaniline crystals

2012 ◽  
Vol 68 (3) ◽  
pp. 297-304 ◽  
Author(s):  
Kohei Johmoto ◽  
Takashi Ishida ◽  
Akiko Sekine ◽  
Hidehiro Uekusa ◽  
Yuji Ohashi
Keyword(s):  
Dihedral Angle ◽  
Steric Hindrance ◽  
Molecular Structures ◽  
Dihedral Angles ◽  
Clear Correlation ◽  
X Ray Diffraction ◽  
Photochromic Properties ◽  
X Ray ◽  
Benzene Rings ◽  
The Relationship

The crystal structures of the salicylideneaniline derivatives N-salicylidene-4-tert-butyl-aniline (1), N-3,5-di-tert-butyl-salicylidene-3-methoxyaniline (2), N-3,5-di-tert-butyl-salicylidene-3-bromoaniline (3), N-3,5-di-tert-butyl-salicylidene-3-chloroaniline (4), N-3,5-di-tert-butyl-salicylidene-4-bromoaniline (5), N-3,5-di-tert-butyl-salicylidene-aniline (6), N-3,5-di-tert-butyl-salicylidene-4-carboxyaniline (7) and N-salicylidene-2-chloroaniline (8) were analyzed by X-ray diffraction analysis at ambient temperature to investigate the relationship between their photochromic properties and molecular structures. A clear correlation between photochromism and the dihedral angle of the two benzene rings in the salicylideneaniline derivatives was observed. Crystals with dihedral angles less than 20° were non-photochromic, whereas those with dihedral angles greater than 30° were photochromic. Crystals with dihedral angles between 20 and 30° could be either photochromic or non-photochromic. Inhibition of the pedal motion by intra- or intermolecular steric hindrance, however, can result in non-photochromic behaviour even if the dihedral angle is larger than 30°.

Optoelectronic properties of solar cell materials based on copper-zinc-tin-sulfide Cu2ZnSn(SxTe1-x)4 alloys for photovoltaic device applications

Solar Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 851-862
Author(s):  
Z. Hussein ◽  
A. Laref ◽  
H.R. Alqahtani ◽  
Eman.A. Alghamdi ◽  
Mohammed El Amine Monir ◽  
...  
Keyword(s):  
Solar Cell ◽  
Photovoltaic Device ◽  
Optoelectronic Properties ◽  
Tin Sulfide ◽  
Copper Zinc Tin Sulfide ◽  
Device Applications ◽  
Copper Zinc

High efficient T-shape deep-red thermally activated delayed fluorescence emitter: substitution position effect

2021 ◽  
Author(s):  
Kai Zhang ◽  
Jianzhong Fan ◽  
Chuankui Wang ◽  
Lili Lin
Keyword(s):  
Charge Transfer ◽  
Position Effect ◽  
Luminescent Properties ◽  
Delayed Fluorescence ◽  
Molecular Structures ◽  
Transfer Property ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
High Efficient ◽  
The Relationship

Modulating the relationship between molecular structures and luminescent properties as well as the charge transfer property for deep-red thermally activated delayed fluorescence (TADF) emitters has always been a powerful challenge,...

ChemInform Abstract: Click-Chemistry Approaches to π-Conjugated Polymers for Organic Electronics Applications

ChemInform ◽  
2016 ◽  
Vol 47 (46) ◽  
Author(s):  
Assunta Marrocchi ◽  
Antonio Facchetti ◽  
Daniela Lanari ◽  
Stefano Santoro ◽  
Luigi Vaccaro
Keyword(s):  
Conjugated Polymers ◽  
Click Chemistry ◽  
Organic Electronics
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