Assembly of Centimeter Long Silica Coated FePt Colloid Crystals with Tailored Interstices by Magnetic Crystallization

DOI: 10.1021/cm801068j

Authors: Shik Chi Tsang (University of Oxford) , Chih H. Yu (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University) , Huili Tang (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University) , Heyong He (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University) , Valeria Castelletto (University of Reading) , Theyencheri Narayanan (ESRF) , Chester C. H. Lo (Iowa State University) , Kin Tam (AstraZeneca) , Ian W. Hamley (University of Reading)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Chemistry Of Materials , VOL 20 (14) , PAGES 4554–4556

State: Published (Approved)
Published: June 2008

Abstract: A new bottom-up approach using magnetic crystallization for the synthesis of centimeter long silica coated magnetic FePt colloidal crystals is for the first time revealed. HRTEM, SAX, BET, and VSM indicate that hcp packed colloidal crystals are composed of three-dimensional regular arrays of superparamagnetic FePt nanoparticle encapsulated in a protective hydrophilic silica shell with controllable thickness depending on gelation times which create adjustable internal interstices

Subject Areas: Chemistry, Materials


Instruments: NONE-No attached Diamond beamline

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