Probing the Design Rules for Optimizing Electron Spin Relaxation in Densely Packed Triplet Media for Quantum Applications.

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-12-19 eCollection Date: 2025-01-06 DOI:10.1021/acsmaterialslett.4c01465

Max Attwood, Yingxu Li, Irena Nevjestic, Phil Diggle, Alberto Collauto, Muskaan Betala, Andrew J P White, Mark Oxborrow

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引用次数: 0

Abstract

Quantum technologies using electron spins have the advantage of employing chemical qubit media with tunable properties. The principal objective of material engineers is to enhance photoexcited spin yields and quantum spin relaxation. In this study, we demonstrate a facile synthetic approach to control spin properties in charge-transfer cocrystals consisting of 1,2,4,5-tetracyanobenzene (TCNB) and acetylated anthracene. We find that the extent and position of acetylation control the degree of charge-transfer and the optical band gap by modifying crystal packing and electronic structure. We further reveal that while the spin polarization of the triplet state is slightly reduced compared to prototypical Anthracene:TCNB, the phase memory (T _m) and, for 9-acetylanthracene:TCNB spin-lattice relaxation (T ₁) time, could be enhanced up to 2.4 times. Our findings are discussed in the context of quantum microwave amplifiers, known as masers, and show that acetylation could be a powerful tool for improving organic materials for quantum sensing applications.

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探讨密装三重态介质中优化电子自旋弛豫的设计规则。

利用电子自旋的量子技术具有使用具有可调性质的化学量子比特介质的优势。材料工程师的主要目标是提高光激发自旋产率和量子自旋弛豫。在这项研究中，我们展示了一种简单的合成方法来控制由1,2,4,5-四氰苯（TCNB）和乙酰化蒽组成的电荷转移共晶的自旋性质。我们发现乙酰化的程度和位置通过改变晶体的填充和电子结构来控制电荷转移的程度和光学带隙。我们进一步发现，虽然与原型蒽：TCNB相比，三重态的自旋极化略有降低，但相记忆（T m）和9-乙酰蒽：TCNB的自旋晶格弛豫（t1）时间可提高2.4倍。我们的研究结果在量子微波放大器（即脉泽）的背景下进行了讨论，并表明乙酰化可能是改进用于量子传感应用的有机材料的有力工具。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.