Probing the design rules for optimizing electron spin relaxation in densely packed triplet media for quantum applications
Author(s)
Type
Journal Article
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 (Tm) and, for 9-acetylanthracene:TCNB spin–lattice relaxation (T1) 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.
Date Issued
2025-01-06
Date Acceptance
2024-12-16
Citation
ACS Materials Letters, 2025, 7 (1), pp.286-294
ISSN
2639-4979
Publisher
American Chemical Society
Start Page
286
End Page
294
Journal / Book Title
ACS Materials Letters
Volume
7
Issue
1
Copyright Statement
© 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 .
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/39790740
Subjects
COCRYSTALS
DYNAMICS
Materials Science
Materials Science, Multidisciplinary
MICROTUBES
PENTACENE
PHASE-TRANSITION
POLARIZATION
ROOM-TEMPERATURE
Science & Technology
STATE
Technology
TERPHENYL CRYSTALS
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2024-12-19