Shape-Dependent Locomotion of DNA-Linked Magnetic Nanoparticle Films
- 주제(키워드) Self-assembly , DNA , Iron oxide nanoparticle , Layer-by-layer , Superparamagnetic , Locomotion
- 주제(기타) Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
- 설명문(일반) [Ko, Jein; Kim, Jongwook; Moon, Soyoon; Jeon, Hyunjin; Golla, Murali; Chun, Chan Joo; Park, So-Jung] Ewha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea; [Kim, Hyoungsoo] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37673, South Korea; [Park, Jin Hyeok; Kim, Jong Sik; Shim, Tae Soup] Ajou Univ, Dept Energy Syst Res, Suwon 16499, South Korea; [Ki, Kanghyun; Lee, Anna] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37673, South Korea; [Park, Sarah S.] Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2024
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000245537
- 본문언어 영어
- Published As https://doi.org/10.1021/acs.nanolett.4c05189
- PubMed https://pubmed.ncbi.nlm.nih.gov/39680868
초록/요약
The shape-dependent aero- and hydro-dynamics found in nature have been adopted in a wide range of areas spanning from daily transportation to forefront biomedical research. Here, we report DNA-linked nanoparticle films exhibiting shape-dependent magnetic locomotion, controlled by DNA sequences. Fabricated through a DNA-directed layer-by-layer assembly of iron oxide and gold nanoparticles, the multifunctional films exhibit rotational and translational motions under magnetic fields, along with reversible shape morphing via DNA strand exchange reactions. Notably, the shape of the film significantly influences its magnetic responsiveness, attributable to shape-dependent drag forces acting on mesoscopic films. The distinctive shape dependence combined with the shape-changing capability offers an approach to regulate magnetic locomotion within a constant magnetic field, as demonstrated here through the go and stop motion of nanoparticle films without altering the magnetic field.
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