High-Density Covalent Grafting of Spin-Active Molecular Moieties to Diamond SurfacesClick to copy article linkArticle link copied!
- Benjamin F. BachmanBenjamin F. BachmanDepartment of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Benjamin F. Bachman
- Zachary R. JonesZachary R. JonesDepartment of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Zachary R. Jones
- Gabriel R. JaffeGabriel R. JaffeDepartment of Physics, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Gabriel R. Jaffe
- Jad SalmanJad SalmanDepartment of Electrical and Computer Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United StatesMore by Jad Salman
- Raymond WamboldRaymond WamboldDepartment of Electrical and Computer Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United StatesMore by Raymond Wambold
- Zhaoning YuZhaoning YuDepartment of Physics, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesDepartment of Electrical and Computer Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United StatesMore by Zhaoning Yu
- Jennifer T. ChoyJennifer T. ChoyDepartment of Engineering Physics, University of Wisconsin—Madison, 1500 Engineering Drive, Madison, Wisconsin 53706, United StatesMore by Jennifer T. Choy
- Shimon J. KolkowitzShimon J. KolkowitzDepartment of Physics, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Shimon J. Kolkowitz
- Mark A. ErikssonMark A. ErikssonDepartment of Physics, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Mark A. Eriksson
- Mikhail A. KatsMikhail A. KatsDepartment of Physics, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesDepartment of Electrical and Computer Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United StatesMore by Mikhail A. Kats
- Robert J. Hamers*Robert J. Hamers*Email: [email protected]Department of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United StatesMore by Robert J. Hamers
Abstract
Functionalization of diamond surfaces with TEMPO and other surface paramagnetic species represents one approach to the implementation of novel chemical detection schemes that make use of shallow quantum color defects such as silicon-vacancy (SiV) and nitrogen-vacancy (NV) centers. Yet, prior approaches to quantum-based chemical sensing have been hampered by the absence of high-quality surface functionalization schemes for linking radicals to diamond surfaces. Here, we demonstrate a highly controlled approach to the functionalization of diamond surfaces with carboxylic acid groups via all-carbon tethers of different lengths, followed by covalent chemistry to yield high-quality, TEMPO-modified surfaces. Our studies yield estimated surface densities of 4-amino-TEMPO of approximately 1.4 molecules nm–2 on nanodiamond (varying with molecular linker length) and 3.3 molecules nm–2 on planar diamond. These values are higher than those reported previously using other functionalization methods. The ζ-potential of nanodiamonds was used to track reaction progress and elucidate the regioselectivity of the reaction between ethenyl and carboxylate groups and surface radicals.
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This article is cited by 4 publications.
- Minjeong Kim, Maryam Zahedian, Wenxin Wu, Chengyu Fang, Zhaoning Yu, Raymond A. Wambold, Ricardo Vidrio, Yuhan Tong, Shenwei Yin, David A. Czaplewski, Jennifer T. Choy, Mikhail A. Kats. Broadband Light Extraction from Near-Surface NV Centers Using Crystalline-Silicon Antennas. Nano Letters 2025, 25
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, 4659-4666. https://doi.org/10.1021/acs.nanolett.4c04299
- Paige C. Kinsley, Curtis M. Green, Jaya Borgatta, Catherine E. Kruszynski Earl, Elizabeth D. Laudadio, Robert J. Hamers. Nanometer-Thick Carbon Coatings with Covalent Chemical Functionalization of Metal Oxide Nanoparticles for Environmental and Biological Applications. ACS Applied Nano Materials 2023, 6
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- Erika Janitz, Konstantin Herb, Laura A. Völker, William S. Huxter, Christian L. Degen, John M. Abendroth. Diamond surface engineering for molecular sensing with nitrogen—vacancy centers. Journal of Materials Chemistry C 2022, 10
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, 13533-13569. https://doi.org/10.1039/D2TC01258H
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