Synthesis and Surface Modification of Iron Oxide Nanoparticles

• Main Authors: Shih-Fu Chou, 周士富
• Other Authors: Chih-Huang Lai
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/00613105350149317168

碩士 === 國立清華大學 === 材料科學工程學系 === 94 === Abstract Synthesis and Surface Modification of Iron Oxide Nanoparticles Iron oxide nanoparticles were synthesized via hot organic solvent system. The particles’ sizes can be tuned from 6 nm to 12 nm by varying synthetic conditions or seed-mediated growth. The as-synthesized particles are hydrophobic and can be further modified to be hydrophilic ones by surface modifications. The modified particles maintain their superparamagnetic properties under room temperature while the blocking temperature varies after surface modifications. Also we have successfully synthesized CdSe@ZnS quantum dots. The as-synthesized quantum dots are coupled with thiol-functionalized iron oxide nanoparticles. Since QDs are well known with their optical properties and iron oxide nanopartilces are magnetic materials. The resulting nanocomposites are bifunctional with magnetic and optical properties and may have an opportunity for biomedical applications.