发表机构
University of California, Berkeley; Lawrence Berkeley National Laboratory（加州大学伯克利分校; 劳伦斯伯克利国家实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用微间距空气升华法，在数分钟内快速生长出室温下具有光探测磁共振和相干自旋控制的分子晶体，为量子传感提供了低成本、可调谐的材料平台。
AI 中文摘要
量子传感日益需要兼具室温光学自旋可寻址性和相干控制能力，且能快速、便捷制备的材料。然而，半导体平台需要昂贵的材料和专门的加工工艺，而分子系统往往依赖于定制合成或复杂的晶体生长。在此，我们应用微间距空气升华（MAS）技术，在数分钟内快速制备量子传感材料。微克量的市售前驱体在空气中、无需真空或惰性气体处理的情况下，在玻璃上结晶。原位监测显示，生长得到光学透明、化学计量精确的高质量单晶，包括具有固有光波导特性的片状和针状晶体。将蒽或联苯与四氰基苯配对形成的给体-受体电荷转移共晶，以及局域激子型并五苯：并五苯醌（P:PQ），均展现出室温光探测磁共振（ODMR）。电荷转移ODMR共振线宽低于4兆赫兹，与移动三重态激子的运动窄化现象一致，而P:PQ支持相干系综自旋控制，其T2为0.56微秒。化学和电子性质不同的配对均展现出功能性，确立了MAS作为一种可及的分子量子传感材料筛选手段，将分子晶体工程与低成本、化学可调谐的薄三重态自旋层及波导传感几何结构相连接，用于量子传感和显微成像。
英文摘要
Quantum sensing increasingly demands materials combining room-temperature optical spin addressability and coherent control with rapid, accessible fabrication. Yet semiconductor platforms require costly materials and specialized processing, while molecular systems often depend on bespoke synthesis or involved crystal growth. Here we apply microspacing in-air sublimation (MAS) to rapidly fabricate quantum-sensing materials within minutes. Microgram quantities of commercially available precursors crystallize on glass, in air and without vacuum or inert-gas handling. Monitored in situ, growth yields optically clear, stoichiometric single crystals of excellent quality, including plates and needles with intrinsic optical waveguiding. Donor-acceptor charge-transfer co-crystals pairing anthracene or biphenyl with tetracyanobenzene, together with localized-exciton pentacene:pentacenequinone (P:PQ), exhibit room-temperature optically detected magnetic resonance (ODMR). Charge-transfer ODMR resonances reach linewidths below $4\mathrm{MHz}$, consistent with motional narrowing of mobile triplet excitons, while P:PQ supports coherent ensemble spin control with $T_2=0.56μ\mathrm{s}$. Functionality across chemically and electronically distinct pairs establishes MAS as an accessible screen for molecular quantum-sensing materials, connecting molecular crystal engineering with low-cost, chemically tunable thin triplet-spin layers and waveguiding sensor geometries for quantum sensing and microscopy.
Comments34 Pages, 6 Main Figures, 18 Supplementary figures
