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Trapped entanglements in polymer networks: formation and characterization 聚合物网络中的捕获纠缠：形成与表征
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-06-22 DOI: 10.1016/j.trechm.2024.05.005
Fu-Sheng Wang, Leah M. Kosovsky, Erin C. Krist, Benjamin J. Kruse, Aleksandr V. Zhukhovitskiy

The presence of entanglements in polymer networks has been known since the 1940s. These topological crosslinks have been found to strongly affect mechanical properties of the materials, including stiffness, extensibility, and toughness. However, control over the entanglement density and topology remains a challenge. Furthermore, entanglements are invisible to conventional chemical characterization methods, rendering their characterization a challenge in its own right. Recent endeavors in the realm of polymer entanglements have focused on unraveling the nature of entanglements and leveraging this knowledge to enhance the mechanical properties of soft materials. This review covers the latest breakthroughs in controlling and characterizing the formation of trapped entanglements in polymer networks and offers an outlook on the trajectory of this evolving field.

早在 20 世纪 40 年代，人们就已经知道聚合物网络中存在缠结。研究发现，这些拓扑交联会对材料的机械性能（包括刚度、延展性和韧性）产生强烈影响。然而，对纠缠密度和拓扑结构的控制仍然是一项挑战。此外，缠结在传统的化学表征方法中是不可见的，因此其表征本身就是一项挑战。近年来，聚合物纠缠领域的研究重点是揭示纠缠的本质，并利用这些知识提高软材料的机械性能。这篇综述介绍了在控制和表征聚合物网络中缠结的形成方面取得的最新突破，并对这一不断发展的领域的发展轨迹进行了展望。
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引用次数: 0
The ligand: an overlooked element in sustainable catalysis 配体：可持续催化中被忽视的元素
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-06-20 DOI: 10.1016/j.trechm.2024.06.001
Sachin Handa

Ligands play a pivotal role in catalysis, yet crafting and purifying them often requires toxic reagents and results in solvent waste. Thus, curtailing their sustainability repercussions demands a meticulous synthetic process, robust design leading to minimal usage, and entirely ligand-free methodologies.

配体在催化过程中起着举足轻重的作用，但制作和纯化配体往往需要使用有毒试剂，并造成溶剂浪费。因此，要减少配体对可持续发展造成的影响，就必须采用精细的合成工艺、稳健的设计以减少用量，以及完全不使用配体的方法。
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引用次数: 0
Advisory Board and Contents 咨询委员会和内容
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-06-12 DOI: 10.1016/s2589-5974(24)00097-2
No Abstract
无摘要
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引用次数: 0
Subscription and Copyright Information 订阅和版权信息
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-06-12 DOI: 10.1016/s2589-5974(24)00100-x
No Abstract
无摘要
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引用次数: 0
High-color-purity carbon-based light-emitting materials 高色纯碳基发光材料
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-06-01 DOI: 10.1016/j.trechm.2024.05.001
Xianzhi Song, Chenhao Li, Jinsui Li, Qian Teng, Louzhen Fan, Fanglong Yuan

Carbon-based emitters (CBEs) hold promise for display technology due to their abundance, flexibility, tunable photoluminescence (PL), and environmental friendliness. However, uncontrolled vibronic coupling in CBEs often results in inferior-color-purity emissions, posing a significant challenge in realizing the Rec. 2020 standard. This review offers an overview of narrow-bandwidth emissive CBEs including small molecules, polymers, and carbon dots (CDs). We focus primarily on the relationship between molecular structure and optical properties, ranging from their aromatic conjugated skeletons to functional groups. We also delve into the key challenges and potential prospects in this field. It is hoped that this review will inspire more elaborate structure design of narrow-bandwidth emissive CBEs from a fresh perspective and facilitate the practical application of CBE-based light-emitting diodes (LEDs) in wide-color-gamut display technology.

碳基发光体（CBEs）因其丰富性、灵活性、可调光致发光（PL）和环保性，在显示技术中大有可为。然而，CBE 中不受控制的振子耦合通常会导致低色纯发射，这对实现 Rec.本综述概述了窄带宽发射型 CBE，包括小分子、聚合物和碳点（CD）。我们主要关注分子结构与光学特性之间的关系，从芳香共轭骨架到官能团。我们还深入探讨了这一领域的主要挑战和潜在前景。希望这篇综述能以全新的视角启发人们对窄带宽发射型 CBE 进行更精细的结构设计，并促进基于 CBE 的发光二极管（LED）在宽色域显示技术中的实际应用。
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引用次数: 0
Electrochemical energy conversion and storage processes with machine learning 利用机器学习的电化学能量转换和储存过程
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-05-14 DOI: 10.1016/j.trechm.2024.04.007
Jihyeon Park, Jaeyoung Lee

The integration of artificial intelligence (AI)–machine learning (ML) in the field of electrochemistry is expected to reduce the burden of time and cost associated with experimental procedures. The application of AI–ML has pioneered a novel approach and has heralded a paradigm shift in catalyst development, optimization of operational conditions, prediction of battery lifespan, and the development of innovative descriptors. This review delves deep into these critical objectives, highlighting the intersection of AI–ML in the fields of water electrolysis, fuel cells, batteries, and carbon dioxide reduction. This review also underscores the potential of AI–ML to bridge theoretical computations with practical applications and to advance the electrochemical field.

人工智能（AI）-机器学习（ML）在电化学领域的应用有望减少实验过程中的时间和成本负担。人工智能-机器学习的应用开创了一种新方法，预示着催化剂开发、操作条件优化、电池寿命预测和创新描述符开发等领域的范式转变。本综述深入探讨了这些关键目标，重点介绍了人工智能-ML 在水电解、燃料电池、电池和二氧化碳还原领域的交叉应用。这篇综述还强调了人工智能-ML 在理论计算与实际应用之间架起桥梁、推动电化学领域发展的潜力。
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引用次数: 0
From mentee to mentor: advice for new principal investigators 从被指导者到指导者：给新任首席研究员的建议
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-05-10 DOI: 10.1016/j.trechm.2024.04.008
Yuanning Feng

Principal investigators (PI) are usually treated by their group members as the ‘boss’ or even the ‘big brother’, because of the PI’s status and power. This kind of imbalanced situation can result in unhealthy mentorship, especially when the mentor and mentee are in their early career. This article highlights the critical importance of effective mentorship practices for new PIs, drawing insights from personal mentorship experience.

由于首席研究员的地位和权力，其小组成员通常会把首席研究员视为 "老板 "甚至 "大哥"。这种不平衡的情况会导致不健康的指导关系，尤其是当指导者和被指导者都处于职业生涯初期时。本文从个人的导师经验出发，强调了有效的导师实践对新任首席研究员的至关重要性。
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引用次数: 0
An innovative C–H arylation strategy to make chiral phosphines 制造手性膦的创新型 C-H 芳基化策略
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-05-10 DOI: 10.1016/j.trechm.2024.04.005
Xueli Lv, Zhuangzhi Shi
No Abstract
无摘要
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引用次数: 0
Advisory Board and Contents 咨询委员会和内容
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-05-08 DOI: 10.1016/s2589-5974(24)00075-3
No Abstract
无摘要
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引用次数: 0
Subscription and Copyright Information 订阅和版权信息
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-05-08 DOI: 10.1016/s2589-5974(24)00078-9
No Abstract
无摘要
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引用次数: 0
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