Charge mobility enhancement for diketopyrrolopyrrole-based conjugated polymers by partial replacement of branching alkyl chains with linear ones

2017 ◽  
Vol 1 (12) ◽  
pp. 2547-2553 ◽  
Author(s):  
Jing Ma ◽  
Zitong Liu ◽  
Zhijie Wang ◽  
Yizhou Yang ◽  
Guanxin Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Partial Replacement ◽  
Side Chain ◽  
Charge Mobility ◽  
Alkyl Chains

Side-chain engineering of three new conjugated D–A terpolymers by varying the number of branching and linear alkyl chains is presented for OFET studies.

scholarly journals The effect of alkyl side chain length on the formation of two semi-crystalline phases in low band gap conjugated polymers

2020 ◽  
Vol 8 (17) ◽  
pp. 5856-5867 ◽  
Author(s):  
Mengmeng Li ◽  
Pieter J. Leenaers ◽  
Martijn M. Wienk ◽  
René A. J. Janssen
Keyword(s):  
Conjugated Polymers ◽  
Band Gap ◽  
Chain Length ◽  
Side Chain ◽  
Structure And Properties ◽  
Alkyl Side Chain ◽  
Crystalline Phases ◽  
Low Band Gap ◽  
Side Chain Length ◽  
Alkyl Chains

The length of solubilizing alkyl chains affects the formation, structure, and properties of two semi-crystalline phases in conjugated polymers.

The backbone rigidity and its influence on the morphology and charge mobility of FBT based conjugated polymers

2015 ◽  
Vol 6 (8) ◽  
pp. 1309-1315 ◽  
Author(s):  
Kuan-Yi Wu ◽  
Chun-Chieh Chiu ◽  
Wei-Tsung Chuang ◽  
Chien-Lung Wang ◽  
Chain-Shu Hsu
Keyword(s):  
Solid State ◽  
Conjugated Polymers ◽  
Side Chain ◽  
Charge Mobility

Modulation of the backbone rigidity via proper side chain placement and vinylene group incorporation allowed optimization of solid-state order and OFET performances.

Revealing the Side‐Chain Dependent Ordering Transition of Highly‐Crystalline Double‐Cable Conjugated Polymers

2021 ◽  
Author(s):  
Guitao Feng ◽  
Wenliang Tan ◽  
Safakath Karuthedath ◽  
Cheng Li ◽  
Xuechen Jiao ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Side Chain ◽  
Ordering Transition

Side chain triphenylamine-based conjugated polymers for the preparation of efficient heterojunction solar cells

2018 ◽  
Vol 30 (3) ◽  
pp. 2235-2245
Author(s):  
Wenjie Deng ◽  
Yuancheng Qin ◽  
Shanshan Lin ◽  
Dezhong Song ◽  
Sha Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Side Chain ◽  
Heterojunction Solar Cells

scholarly journals The Role of the Side Chain on the Performance of N-type Conjugated Polymers in Aqueous Electrolytes

2018 ◽  
Vol 30 (9) ◽  
pp. 2945-2953 ◽  
Author(s):  
Alexander Giovannitti ◽  
Iuliana P. Maria ◽  
David Hanifi ◽  
Mary J. Donahue ◽  
Daniel Bryant ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Side Chain ◽  
Aqueous Electrolytes

Cytokinin Activity of a Group of Ureidopurine Derivatives Related to the tRNA Component, N-(Purin-6-ylcarbamoyl)threonine

1972 ◽  
Vol 50 (3) ◽  
pp. 237-243 ◽  
Author(s):  
W. H. Dyson ◽  
R. H. Hall ◽  
C. I. Hong ◽  
S. P. Dutta ◽  
G. B. Chheda
Keyword(s):  
Side Chain ◽  
Cytokinin Activity ◽  
Molecular Models ◽  
Straight Chain ◽  
Oh Groups ◽  
Alkyl Chains ◽  
Meta Position ◽  
Naturally Occurring ◽  
Intact Organism ◽  
Electronegative Group

Several ureidopurine derivatives have been tested for cytokinin activity in a soya bean callus assay system. N-(Purin-6-ylcarbamoyl)threonine (Ade-CO-Thr), a naturally occurring component of tRNA, is inactive in the assay. Analogues of Ade-CO-Thr having unmodified hydrocarbon side chains are active; optimal activity is associated with tert-butylureidopurine. In the homologous straight chain series n-butylureidopurine is the most active. Introduction of −COOH and/or −OH groups to analogues with otherwise active alkyl chains negates activity.The phenylureidopurine (PUP) derivative is barely active itself, though ortho-halogenated derivatives (o-chloro-, o-fluoro-PUP) are the most potent ureidopurines known. Biological activity decreases rapidly as the electronegative halide is moved from the ortho to the meta position, and lost entirely in the para position. Replacement of the ortho halide with a non-electronegative group (methyl) greatly reduces activity. Molecular models reveal that Ade-CO-Thr and o-chloro-PUP have nearly identical side-chain bulk. The carboxyl groups of Ade-CO-Thr and the chlorine atom of o-chloro-PUP occupy the same position relative to the electronegative carboxyl oxygen of the urea bridge. It is proposed that Ade-CO-Thr has a growth regulatory role in the intact organism, but that exogenous Ade-CO-Thr may be unable to reach the active site.

scholarly journals Side-chain conjugated polymers for use in the active layers of hybrid semiconducting polymer/quantum dot light emitting diodes

2016 ◽  
Vol 7 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Ana Fokina ◽  
Yeonkyung Lee ◽  
Jun Hyuk Chang ◽  
Lydia Braun ◽  
Wan Ki Bae ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Conjugated Polymers ◽  
Light Emitting Diodes ◽  
Side Chain ◽  
Hybrid Polymer ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Active Layers

Three monomers,M1–M3, with modified carbazole cores and styrene functionality were polymerized by RAFT. The polymers were then used in the active layers of hybrid polymer/quantum dot light emitting diodes.

Effects of Side-Chain Topology on Aggregation of Conjugated Polymers

2018 ◽  
Vol 51 (7) ◽  
pp. 2580-2590 ◽  
Author(s):  
Brenden McDearmon ◽  
Eunhee Lim ◽  
In-Hwan Lee ◽  
Lisa M. Kozycz ◽  
Kathryn O’Hara ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Side Chain

scholarly journals DFT Prediction of Factors Affecting the Structural Characteristics, the Transition Temperature and the Electronic Density of Some New Conjugated Polymers

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1207
Author(s):  
Quoc-Trung Vu ◽  
Thi-Thuy-Duong Tran ◽  
Thuy-Chinh Nguyen ◽  
Thien Vuong Nguyen ◽  
Hien Nguyen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Conjugated Polymers ◽  
Bond Length ◽  
Density Functional ◽  
Structural Characteristics ◽  
Side Chain ◽  
Electronic Density ◽  
Energy Field ◽  
Energy Bandgap

Conjugated polymers are promising materials for various cutting-edge technologies, especially for organic conducting materials and in the energy field. In this work, we have synthesized a new conjugated polymer and investigated the effect of distance between bond layers, side-chain functional groups (H, Br, OH, OCH3 and OC2H5) on structural characteristics, phase transition temperature (T), and electrical structure of C13H8OS using Density Functional Theory (DFT). The structural characteristics were determined by the shape, network constant (a, b and c), bond length (C–C, C–H, C–O, C–S, C–Br and O–H), phase transition temperatures, and the total energy (Etot) on a base cell. Our finding shows that the increase of layer thickness (h) of C13H8OS–H has a negligible effect on the transition temperature, while the energy bandgap (Eg) increases from 1.646 eV to 1.675 eV. The calculation of bond length with different side chain groups was carried out for which C13H8OS–H has C–H = 1.09 Å; C13H8OS–Br has C–Br = 1.93 Å; C13H8OS–OH has C–O = 1.36 Å, O–H = 0.78 Å; C13H8OS–OCH3 has C–O = 1.44 Å, O–H =1.10 Å; C13H8OS–OC2H5 has C–O = 1.45 Å, C–C = 1.51Å, C–H = 1.10 Å. The transition temperature (T) for C13H8OS–H was 500 K < T < 562 K; C13H8OS–Br was 442 K < T < 512 K; C13H8OS–OH was 487 K < T < 543 K; C13H8OS–OCH3 was 492 K < T < 558 K; and C13H8OS–OC2H5 was 492 K < T < 572 K. The energy bandgap (Eg) of Br is of Eg = 1.621 eV, the doping of side chain groups H, OH, OCH3, and OC2H5, leads to an increase of Eg from 1.621 eV to 1.646, 1.697, 1.920, and 2.04 eV, respectively.

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