Current methodologies for a sustainable approach to π-conjugated organic semiconductors

2016 ◽  
Vol 9 (3) ◽  
pp. 763-786 ◽  
Author(s):  
Assunta Marrocchi ◽  
Antonio Facchetti ◽  
Daniela Lanari ◽  
Chiara Petrucci ◽  
Luigi Vaccaro
Keyword(s):  
Organic Semiconductors ◽  
Electronic Devices ◽  
Synthetic Methodologies ◽  
Conjugated Organic Semiconductors

The development of waste minimized and clean synthetic methodologies to afford polymeric semiconductors is essential for the successful commercialization of opto-electronic devices.

Fused Ambipolar Aza-isoindigos with NIR absorption

2021 ◽  
Author(s):  
Liping Yao ◽  
Danlei Zhu ◽  
Hailiang Liao ◽  
Sheik Haseena ◽  
Mahesh kumar Ravva ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
The Past ◽  
Pi Conjugated ◽  
Nir Absorption ◽  
Conjugated Organic Semiconductors

Due to their advantages of low-cost, light-weight, and mechanical flexibility, much attention has been focused on pi-conjugated organic semiconductors. In the past decade, although many materials with high performance has...

Recent Advances in the Computational Characterization of π-Conjugated Organic Semiconductors

2019 ◽  
pp. 37-106
Author(s):  
Jean-Luc Bredas ◽  
Xiankai Chen ◽  
Thomas Körzdörfer ◽  
Hong Li ◽  
Chad Risko ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Recent Advances ◽  
Conjugated Organic Semiconductors

Green solvent-processed organic electronic devices

2020 ◽  
Vol 8 (43) ◽  
pp. 15027-15047
Author(s):  
Filippo Campana ◽  
Choongik Kim ◽  
Assunta Marrocchi ◽  
Luigi Vaccaro
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
Organic Photovoltaics ◽  
Thin Film Transistors ◽  
High Performance ◽  
Electronic Devices ◽  
Green Solvents ◽  
Green Solvent ◽  
Organic Electronic Devices ◽  
Organic Electronic

A review on the recent efforts to select green solvents for processing organic semiconductors for thin film transistors (TFT) and organic photovoltaics (OPV) applications. A guide for the safe fabrication of high-performance devices.

scholarly journals Global Aromaticity at the Nanoscale

2019 ◽  
Author(s):  
Michel Rickhaus ◽  
Michael Jirasek ◽  
Lara Tejerina ◽  
Henrik Gotfredsen ◽  
Martin D. Peeks ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Semiconductors ◽  
Oxidation State ◽  
Single Molecule ◽  
Ring Current ◽  
Electronic Devices ◽  
Three Dimensional ◽  
Average Oxidation State ◽  
Ring Currents ◽  
Cyclic Molecule

<div><p>Aromaticity is an important concept for predicting electronic delocalisation in molecules, particularly for designing organic semiconductors and single-molecule electronic devices. It is most simply defined by the ability of a cyclic molecule to sustain a ring current when placed in a magnetic field. Hückel’s rule states that if a ring has [4n+2] π-electrons, it will be aromatic with an induced magnetisation that opposes the external field inside the ring, whereas if it has 4n π-electrons, it will be antiaromatic with the opposite magnetisation. This rule reliably predicts the behaviour of small molecules, typically with circuits of less than about 22 π-electrons (n = 5). It is not clear whether aromaticity has a size limit and whether Hückel’s rule is valid in much larger macrocycles. Here, we present evidence for global aromaticity in a wide variety of porphyrin nanorings, with circuits of up to 162 π-electrons (n = 40; diameter 5 nm). We show that aromaticity can be controlled by changing the molecular structure, oxidation state and three-dimensional conformation. Whenever a global ring current is observed, its direction is correctly predicted by Hückel’s rule. The magnitude of the current is maximised when the average oxidation state of the porphyrin units is around 0.5–0.7, when the system starts to resemble a conductor with a partially filled valence band. Our results show that aromaticity can arise in large macrocycles, bridging the size gap between ring currents in molecular and mesoscopic rings.</p></div>

scholarly journals Intrinsically Elastic Organic Semiconductors (IEOSs)

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6130
Author(s):  
Fei Liu ◽  
Xueling Hou ◽  
Ben-Lin Hu ◽  
Run-Wei Li
Keyword(s):  
Organic Synthesis ◽  
Organic Semiconductors ◽  
Structural Engineering ◽  
Electronic Devices ◽  
Synthetic Methods ◽  
Chemical Structures ◽  
Mechanical And Electrical Properties ◽  
Wearable Electronic ◽  
Synthetic Routes ◽  
Wearable Electronic Devices

Elastic semiconductors are becoming more and more important to the development of flexible wearable electronic devices, which can be prepared by structural engineering design, blending, and the intrinsic elastification of organic semiconductors (intrinsically elastic organic semiconductor, IEOS). Compared with the elastic semiconductors prepared by structural engineering and blending, the IEOS prepared by organic synthesis has attracted numerous attentions for its solution processability and highly tunable chemical structures. For IEOSs, reasonable designs of synthetic routes and methods are the basis for realizing good mechanical and electrical properties. This brief review begins with a concise introduction of elastic semiconductors, then follows with several synthetic methods of IEOSs, and concludes the characteristics of each method, which provides guidance for the synthesis of IEOSs in the future. Furthermore, the properties of IEOSs are involved from the aspects of electrical, mechanical properties, and the applications of the IEOSs in elastic electronic devices. Finally, the challenge and an outlook which IEOSs are facing are presented in conclusion.

scholarly journals Tailoring Molecular Weight of Polymer Additives for Organic Semiconductors

2022 ◽  
Author(s):  
Zhengran He ◽  
Ziyang Zhang ◽  
Sheng Bi
Keyword(s):  
Molecular Weight ◽  
Binary System ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
High Performance ◽  
Electronic Devices ◽  
Polymer Additives ◽  
Flexible Substrates ◽  
Polymer Additive

A binary system comprising both an organic semiconductor and a polymer additive has attracted extensive research interests due to great potential for high-performance, solution-proccessable electronic devices on flexible substrates. The...

The effect of side-chain length on the microstructure and processing window of zone-cast naphthalene-based bispentalenes

2019 ◽  
Vol 7 (43) ◽  
pp. 13493-13501 ◽  
Author(s):  
Katelyn P. Goetz ◽  
Kohei Sekine ◽  
Fabian Paulus ◽  
Yu Zhong ◽  
Daniel Roth ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Charge Carrier ◽  
Organic Semiconductors ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Side Chain ◽  
Processing Window ◽  
Conjugated Organic Semiconductors ◽  
Structure And Microstructure

The solubilizing side-groups of solution-processable π-conjugated organic semiconductors affect both the crystal structure and microstructure of the respective thin films and thus charge-carrier mobility in devices.

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