Cited 2 time in
Cited 2 time in
Quantitative Analysis of Calcium Phosphate Nanocluster Growth Using Time-of-Flight Medium-Energy-Ion-Scattering Spectroscopy
- Quantitative Analysis of Calcium Phosphate Nanocluster Growth Using Time-of-Flight Medium-Energy-Ion-Scattering Spectroscopy
- Park, Jimin; Yang, Ki Dong; Kim, Na-Young; Jung, Kang-Won; Le, Viet-Duc; Lim, Hee-Jin; An, Junghyun; Jin, Kyoungsuk; Kim, Yong-Hyun; Nam, Ki Tae; Moon, Daewon
- DGIST Authors
- Moon, Daewon
- Issue Date
- ACS Central Science, 4(9), 1253-1260
- Article Type
- Calcium phosphate; Nanoclusters; Plasma interactions; Compositional ratio; First-principles study; Inorganic materials; Medium energy ion scattering; Medium energy ion scattering spectroscopies; Non-collagenous proteins; Nucleation and growth; Specific interaction; Ligands
- One of the remaining challenges in material chemistry is to unveil the quantitative compositional/structural information and thermodynamic nature of inorganic materials especially in the initial nucleation and growth step. In this report, we adopted newly developed time-of-flight medium-energy-ion-scattering (TOF-MEIS) spectroscopy to address this challenge and explored heterogeneously grown nanometer-sized calcium phosphate as a model system. With TOF-MEIS, we discovered the existence of calcium-rich nanoclusters (Ca/P ∼ 3) in the presence of the non-collagenous-protein-mimicking passivating ligands. Over the reaction, these clusters progressively changed their compositional ratio toward that of a bulk phase (Ca/P ∼ 1.67) with a concurrent increase in their size to ∼2 nm. First-principles studies suggested that the calcium-rich nanoclusters can be stabilized through specific interactions between the ligands and clusters, emphasizing the important role of template on guiding the chemical and thermodynamic nature of inorganic materials at the nanoscale. © 2018 American Chemical Society.
- American Chemical Society
- Related Researcher
NanoBio Imaging Laboratory
Coherent Raman Scattering; Surface Plasmon Resonance Imaging Ellipsometry; Imaging Mass Spectrometry; Time-of-flight Medium Energy Ion Scattering
There are no files associated with this item.
- Department of New BiologyNanoBio Imaging Laboratory1. Journal Articles
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.