Intrinsically stretchable polymer semiconductors: molecular design, processing and device applications

2021 ◽  
Author(s):  
Hsin-Chiao Tien ◽  
Yen-Wen Huang ◽  
Yu-Cheng Chiu ◽  
Yu-Hsuan Cheng ◽  
Chu-Chen Chueh ◽  
...  
Keyword(s):  
Molecular Design ◽  
Side Chain ◽  
Next Generation ◽  
Polymer Blending ◽  
Polymer Semiconductors ◽  
Device Applications

This review surveys the current developments of intrinsic stretchable polymer semiconductors, including backbone and side-chain engineering, polymer blending, fabrication processes and their next-generation biomimicking applications.

Discotic columnar liquid-crystalline polymer semiconducting materials with high charge-carrier mobility via rational macromolecular engineering

2017 ◽  
Vol 8 (21) ◽  
pp. 3286-3293 ◽  
Author(s):  
Bin Mu ◽  
Xingtian Hao ◽  
Jian Chen ◽  
Qian Li ◽  
Chunxiu Zhang ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Cost Effective ◽  
Crystalline Polymer ◽  
Charge Carrier Mobility ◽  
Optoelectronic Device ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Semiconducting Materials ◽  
Organic Semiconducting Materials ◽  
Device Applications

Well-prepared side-chain discotic liquid crystal polymers with shorter spacers in ordered columnar phases are fascinating and promising cost-effective, solution-processable organic semiconducting materials for various potential optoelectronic device applications.

Side-Chain-Induced Rigid Backbone Organization of Polymer Semiconductors through Semifluoroalkyl Side Chains

2016 ◽  
Vol 138 (11) ◽  
pp. 3679-3686 ◽  
Author(s):  
Boseok Kang ◽  
Ran Kim ◽  
Seon Baek Lee ◽  
Soon-Ki Kwon ◽  
Yun-Hi Kim ◽  
...  
Keyword(s):  
Side Chain ◽  
Side Chains ◽  
Polymer Semiconductors

scholarly journals Shape memory polymer network with thermally distinct elasticity and plasticity

2016 ◽  
Vol 2 (1) ◽  
pp. e1501297 ◽  
Author(s):  
Qian Zhao ◽  
Weike Zou ◽  
Yingwu Luo ◽  
Tao Xie
Keyword(s):  
Shape Memory ◽  
Molecular Design ◽  
Shape Change ◽  
Shape Memory Polymer ◽  
Polymer Network ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Device Applications ◽  
Temperature Ranges ◽  
Rational Molecular Design

Stimuli-responsive materials with sophisticated yet controllable shape-changing behaviors are highly desirable for real-world device applications. Among various shape-changing materials, the elastic nature of shape memory polymers allows fixation of temporary shapes that can recover on demand, whereas polymers with exchangeable bonds can undergo permanent shape change via plasticity. We integrate the elasticity and plasticity into a single polymer network. Rational molecular design allows these two opposite behaviors to be realized at different temperature ranges without any overlap. By exploring the cumulative nature of the plasticity, we demonstrate easy manipulation of highly complex shapes that is otherwise extremely challenging. The dynamic shape-changing behavior paves a new way for fabricating geometrically complex multifunctional devices.

Supramolecular Interactions in Aromatic Structures for Non-Optical and Optical Chemosensors of Explosive Chemicals

2021 ◽  
Vol 317 ◽  
pp. 202-207
Author(s):  
Juan Matmin ◽  
Nur Fatiha Ghazalli ◽  
Fazira Ilyana Abdul Razak ◽  
Hendrik O. Lintang ◽  
Mohamad Azani Jalani
Keyword(s):  
Hydrogen Bonding ◽  
High Performance ◽  
Molecular Design ◽  
Optical Sensing ◽  
Green Emission ◽  
Supramolecular Interactions ◽  
Side Chain ◽  
Optical Chemosensors ◽  
Random Aggregate ◽  
Metal Metal

The scientific investigation based on the molecular design of aromatic compounds for high-performance chemosensor is challenging. This is because their multiplex interactions at the molecular level should be precisely determined before the desired compounds can be successfully used as sensing materials. Herein, we report on the molecular design of chemosensors based on aromatic structures of benzene as the organic motif of benzene-1,3,5-tricarboxamides (BTA), as well as the benzene pyrazole complexes (BPz) side chain, respectively. In the case of BTA, the aromatic benzene acts as the centre to allow the formation of π–π stacking for one-dimensional materials having rod-like arrangements that are stabilized by threefold hydrogen bonding. We found that when nitrate was applied, the rod-like BTA spontaneously formed into a random aggregate due to the deformation of its hydrogen bonding to form inactive nitroso groups for non-optical sensing capability. For the optical chemosensor, the aromatic benzene is decorated as a side-chain of BPz to ensure that cage-shaped molecules make maximum use of their centre providing metal-metal interactions for fluorescence-based sensing materials. In particular, when exposed to benzene, Cu-BPz displayed a blue-shift of its original emission band from 616 to 572 nm (Δ = 44 nm) and emitted bright orange to green emission colours. We also observe a different mode of fluorescence-based sensing materials for Au-BPz, which shows a particular quenching mechanism resulting in 81% loss of its original intensity on benzene exposure to give less red-orange emission (λ = 612 nm). The BTA and BPz synthesized are promising high-performance supramolecular chemosensors based on the non-optical and optical sensing capability of a particular interest analyte.

Statistical Copolymers with Side-Chain Hole and Electron Transport Groups for Single-Layer Electroluminescent Device Applications

2000 ◽  
Vol 12 (9) ◽  
pp. 2542-2549 ◽  
Author(s):  
Xuezhong Jiang ◽  
Richard A. Register ◽  
Kelly A. Killeen ◽  
Mark E. Thompson ◽  
Florian Pschenitzka ◽  
...  
Keyword(s):  
Electron Transport ◽  
Single Layer ◽  
Side Chain ◽  
Electroluminescent Device ◽  
Device Applications

scholarly journals Polysiloxane-Based Side Chain Liquid Crystal Polymers: From Synthesis to Structure–Phase Transition Behavior Relationships

Polymers ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 794 ◽  
Author(s):  
Lanying Zhang ◽  
Wenhuan Yao ◽  
Yanzi Gao ◽  
Cuihong Zhang ◽  
Huai Yang
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Molecular Design ◽  
Molecular Structures ◽  
Polymer Materials ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Thermal Stabilities ◽  
Structure Phase Transition

Organosilicon polymer materials play an important role in certain applications due to characteristics of much lower glass transition temperatures (Tg), viscosities, surface energy, as well as good mechanical, thermal stabilities, and insulation performance stemming from the higher bond energy and the larger bond angles of the adjacent silicon-oxygen bond. This critical review highlights developments in the synthesis, structure, and phase transition behaviors of polysiloxane-based side chain liquid crystal polymers (PSCLCPs) of linear and cyclic polysiloxanes containing homopolymers and copolymers. Detailed synthetic strategies are elaborated, and the relationship between molecular structures and liquid crystalline phase transition behaviors is systematically discussed, providing theoretical guidance on the molecular design of the materials.

scholarly journals Constructing Donor-Resonance-Donor Molecules for Acceptor-Free Bipolar Organic Semiconductors

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
He Jiang ◽  
Jibiao Jin ◽  
Zijie Wang ◽  
Wuji Wang ◽  
Runfeng Chen ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Performance ◽  
Molecular Design ◽  
Stimuli Responsive ◽  
Light Emitting ◽  
Deep Blue ◽  
Device Structures ◽  
Device Applications ◽  
Donor Acceptor ◽  
Organic Optoelectronic

Organic semiconductors with bipolar transporting character are highly attractive as they offer the possibility to achieve high optoelectronic performance in simple device structures. However, the continual efforts in preparing bipolar materials are focusing on donor-acceptor (D-A) architectures by introducing both electron-donating and electron-withdrawing units into one molecule in static molecular design principles. Here, we report a dynamic approach to construct bipolar materials using only electron-donating carbazoles connected by N-P=X resonance linkages in a donor-resonance-donor (D-r-D) structure. By facilitating the stimuli-responsive resonance variation, these D-r-D molecules exhibit extraordinary bipolar properties by positively charging one donor of carbazole in enantiotropic N+=P-X- canonical forms for electron transport without the involvement of any acceptors. With thus realized efficient and balanced charge transport, blue and deep-blue phosphorescent organic light emitting diodes hosted by these D-r-D molecules show high external quantum efficiencies up to 16.2% and 18.3% in vacuum-deposited and spin-coated devices, respectively. These results via the D-r-D molecular design strategy represent an important concept advance in constructing bipolar organic optoelectronic semiconductors dynamically for high-performance device applications.

scholarly journals Heterocyclic Chemistry Applied to the Design of N-Acyl Homoserine Lactone Analogues as Bacterial Quorum Sensing Signals Mimics

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5135
Author(s):  
Qiang Zhang ◽  
Sizhe Li ◽  
Maha Hachicha ◽  
Mohamed Boukraa ◽  
Laurent Soulère ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Molecular Design ◽  
Building Blocks ◽  
Toxin Production ◽  
Homoserine Lactone ◽  
Amide Group ◽  
Side Chain ◽  
Synthetic Approach ◽  
Heterocyclic Chemistry ◽  
Gene Expressions

N-acyl homoserine lactones (AHLs) are small signaling molecules used by many Gram-negative bacteria for coordinating their behavior as a function of their population density. This process, based on the biosynthesis and the sensing of such molecular signals, and referred to as Quorum Sensing (QS), regulates various gene expressions, including growth, virulence, biofilms formation, and toxin production. Considering the role of QS in bacterial pathogenicity, its modulation appears as a possible complementary approach in antibacterial strategies. Analogues and mimics of AHLs are therefore biologically relevant targets, including several families in which heterocyclic chemistry provides a strategic contribution in the molecular design and the synthetic approach. AHLs consist of three main sections, the homoserine lactone ring, the central amide group, and the side chain, which can vary in length and level of oxygenation. The purpose of this review is to summarize the contribution of heterocyclic chemistry in the design of AHLs analogues, insisting on the way heterocyclic building blocks can serve as replacements of the lactone moiety, as a bioisostere for the amide group, or as an additional pattern appended to the side chain. A few non-AHL-related heterocyclic compounds with AHL-like QS activity are also mentioned.

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