Discrete Block Copolymers: Precision Engineering on Multiple Length Scales

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: Английский

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Precise synthesis of advanced polyarylamines for efficient perovskite solar cells

Nature Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Language: Английский

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State-of-the-art electrochromic thin films devices, fabrication techniques and applications: a review

Nanocomposites, Journal Year: 2023, Volume and Issue: 10(1), P. 1 - 40

Published: Dec. 5, 2023

Electrochromic (EC) thin films have received considerable attention due to their potential applications in various fields such as smart windows, electrochromic displays, and energy storage devices. This review highlights methods used for the fabrication functionalization of EC applications. Various techniques film deposition ranging from solution-processable, low-temperature approaches sol-gel, spin coating, dip spray pyrolysis, advanced physical vapor deposition, chemical sputtering are summarized this review. In addition, outcome different on opto-electrochromic properties been discussed elaborately. has spark interest researchers a broad range disciplines, including photocatalysis, electrocatalysis, nanotechnology materials science.

Language: Английский

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Recent advances and innovations in the design and fabrication of wearable flexible biosensors and human health monitoring systems based on conjugated polymers

Bio-Design and Manufacturing, Journal Year: 2024, Volume and Issue: 7(4), P. 476 - 516

Published: July 1, 2024

Language: Английский

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Topological Transition in One-Dimensional π-Conjugated Polymers via Strain Engineering

ACS Macro Letters, Journal Year: 2025, Volume and Issue: unknown, P. 329 - 334

Published: Feb. 25, 2025

Topological trivial and nontrivial phases can be readily realized in low-dimensional organic polymers via bottom-up synthesis. However, to effectively harness these topological practical devices, it is crucial develop strategies for achieving a controllable transition. Inspired by topology π-electron pairing, we propose method induce transitions through orbital crossover driven continuous external strain 10 one-dimensional (1D) π-conjugated (CPs), categorized into aromatic quinonoid forms. Our results reveal that exhibit edge states, indicative of (Zak invariant, Z2 = 1), while correspond (Z2 0). Notably, the poly(thiophene dioxide) (TDO) polymer undergoes reversible transition under tensile 3.6%, demonstrating strain-dependent phase. This phenomenon attributed gap closure resulting from between highest occupied molecular (HOMO) lowest unoccupied (LUMO). work uncovers 1D highlights induced engineering.

Language: Английский

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Developing multi-functional anthraquinone-based conjugated porous polymers for near-infrared-light-driven high selective cyanation of α-amino C(sp3)-H bonds

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Language: Английский

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Chemical Recycling of Step-Growth Polymers Guided by Le Chatelier’s Principle

ACS Engineering Au, Journal Year: 2024, Volume and Issue: 4(5), P. 432 - 449

Published: July 15, 2024

Although step-growth polymers (SGPs) play a fundamental role in the plastics economy, contributing significantly to various facets of our daily life, their end-of-life management remains inadequately addressed. Chemical recycling SGP wastes, involving depolymerization followed by repolymerization, emerges as promising solution toward achieving circular economy. The SGPs is usually dynamic equilibrium with polymerization reactions, thus falling under system amenable Le Chatelier's principle. This perspective endeavors elucidate interplay between principle and chemical particular emphasis on guidance provided latter process. To this end, we have selected five conventional SGPs, namely, poly(ethylene terephthalate), polyamides, polycarbonates, polyurethanes, polyureas, representatives how alterations temperature, pressure, concentrations products or reactants, catalysts influence process SGPs. Additionally, proposes several potential strategies for applying

Language: Английский

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Organoboron chemistry towards controlled and precise polymer synthesis

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(12), P. 3467 - 3483

Published: Nov. 21, 2023

Language: Английский

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C–H/C–H Oxidative Direct Arylation Polycondensation to Isoindigo-Based n-Type Conjugated Polymers

Macromolecules, Journal Year: 2024, Volume and Issue: 57(9), P. 4158 - 4166

Published: April 24, 2024

Two high molecular weight conjugated polymers (CPs), i.e., poly[N,N′-bis(4-tetradecyloctadecyl)-7,7′-difluoroisoindigo-alt-2,2′-bithiazole] (P2FI2Tz) and poly[N,N′-bis(4-tetradecyloctadecyl)-5,5′,7,7′-tetrafluoroisoindigo-alt-2,2′-bithiazole] (P4FI2Tz), were synthesized via C–H/C–H oxidative direct arylation polycondensation (Oxi-DArP) using PdCl2/CuCl/Cu(OAc)2 as catalytic system chlorobenzene solvent. Both are unipolar n-type semiconductors with electron mobility (μe) > 0.2 cm2 V–1 s–1, attributed to their low-lying highest occupied orbitals (HOMOs) lowest unoccupied orbital (LUMOs), which −6.01/–3.69 −6.24/–3.82 eV for P2FI2Tz P4FI2Tz, respectively. was also C–Br/C–H (DArP) Stille polycondensation. The resultant P2FI2Tz-D P2FI2Tz-S showed slightly lower μe compared Oxi-DArP-made polymer (P2FI2Tz-O1) a similar weight. Notably, Oxi-DArP is much faster more efficient than DArP number-average (Mn) above 40 kDa, obtained in 9 h of Oxi-DArP, significantly shorter 24 Mn 191 kDa could be by extending the polymerization time 16 h. Our results prove an protocol synthesize semiconductors. This first comparative study on three methods, DArP,

Language: Английский

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Sequence-controlled alternating block polychalcogenophenes: synthesis, structural characterization, molecular properties, and transistors for bromine detection

Chemical Science, Journal Year: 2023, Volume and Issue: 14(32), P. 8552 - 8563

Published: Jan. 1, 2023

Sequence-controlled polychalcogenophenes have attracted much interest in terms of synthesis, structure and function polymer science. For the first time, we developed a new class alternating block conjugated copolymers denoted as poly(alt-AB)x-b-(alt-AC)y where both blocks are constituted by an copolymer. 3-Hexylthiophene (S), 3-hexylselenophene (Se) 3-hexyltellurophene (Te) used A, B C units to assemble three sequence-controlled P(SSe)b(STe), P(SSe)b(SeTe) P(STe)b(SeTe) which prepared adding two different Grignard monomers sequence carry out Ni(dppp)Cl2-catalyzed Kumada polymerization. The molecular weight, dispersity, length each (x = y) main-chain can be synthetically controlled via catalyst transfer polycondensation mechanism. structures, i.e. main chain with high side-chain regioregularity, unambiguously confirmed 1H-NMR 13C-NMR. optical electrochemical properties polymers systematically fine-tuned composition ratio chalcogenophenes. From GIWAXS measurements, all exhibited predominantly edge-on orientations, indicating that packing behaviors regioregularity inherited from highly crystalline P3HT. P(SSe)b(STe) hole OFET mobility 1.4 × 10-2 cm2 V-1 s-1, represents one highest values among tellurophene-containing polychalcogenophenes. tellurophene undergo Br2 addition form oxidized TeBr2 species results dramatically red-shifted absorption due arrangement induce strong charge character. devices using applied for detection, showing sensitivity, selectivity reversibility.

Language: Английский

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