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@ARTICLE{Li:1005796,
      author       = {Li, Yongqiang and Shi, Zhifeng and Shang, Liuyang and Tao,
                      Quan and Tang, Qisheng and Krause, Hans-Joachim and Yang,
                      Siwei and Ding, Guqiao and Dong, Hui},
      title        = {{G}raphene quantum dots-based magnetic relaxation switch
                      involving magnetic separation for enhanced performances of
                      endoglin detection using ultra-low-field nuclear magnetic
                      resonance relaxometry},
      journal      = {Sensors and actuators / B},
      volume       = {380},
      issn         = {0925-4005},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2023-01641},
      pages        = {133389 -},
      year         = {2023},
      abstract     = {Magnetic relaxation switches (MRS) based on target-induced
                      state changes of magnetic nanoparticles are vital approaches
                      for biomolecule detection in in vitro diagnosis. Recently,
                      magnetic graphene quantum dots have been employed as
                      magnetic probes instead of iron oxide nanoparticles and
                      showed high sensitivity. Introducing magnetic separation
                      into an MRS assay before the relaxometry measurements can
                      enhance the sensitivity, elevateaccuracy, and expand the
                      linear region. In this work, magnetic separation-assisted
                      MRS was developed to detect endoglin utilizing iron oxide as
                      the magnetic carrier and magnetic graphene quantum dots as
                      the magnetic probe. The assay possesses a broad linear
                      region from 5 ng/mL to 50 μg/mL and a sensitive limit of
                      detection of 1.3 ng/mL, which is two orders of magnitude
                      lower than that of MRS without magnetic separation. The high
                      accuracy and consistency have been proved for endoglin
                      (CD105) detection in real samples. This graphene quantum
                      dotbased MRS involving magnetic separation provides a new
                      route for enhancing the sensitivity and accuracy of
                      biomolecule detection.},
      cin          = {IBI-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBI-3-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000979418700001},
      doi          = {10.1016/j.snb.2023.133389},
      url          = {https://juser.fz-juelich.de/record/1005796},
}