Universität zu Köln

Stadler, Daniel, Siribbal, Shifaa Mohammed, Gessner, Isabel ORCID: 0000-0001-9674-161X, Oez, Senol, Ilyas, Shaista and Mathur, Sanjay (2018). Asymmetric attachment and functionalization of plasmonic nanoparticles on ceramic interfaces. J. Nanostructure Chem., 8 (1). S. 33 - 45. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 2193-8865

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Abstract

The demands for materials that integrate more than one functional imaging or therapeutic unit are of increasing interest for biomedical applications. Here, we present the step-by-step preparation of asymmetric and optically active particles, namely, Gd2O3@Ag, Gd2O3@Au, SiO2-N-3@Au, and SiO2-SH@Au . Successful attachment of plasmonic nanoparticles to the surface of metal-oxide spheres without necessity of a potentially toxic inter-adhesive layer was proven by optical methods as well as X-ray photoelectron spectroscopy. The combination of optical and magnetic properties as present in Gd2O3@Ag and Gd2O3@Au Janus-type particles leads to dual-imaging probes for optical and magnetic resonance imaging. In addition, functional groups, such as azide groups, were linked to the surface of silica particles previous to Au nanoparticle attachment. Subsequent site-selective click reactions with 5-FAM were successfully performed as demonstrated by UV-Vis measurements. All described systems exhibited excellent long-term stability and can, therefore, be considered as promising candidates for theranostic applications. [GRAPHICS] .

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stadler, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Siribbal, Shifaa Mohammed UNSPECIFIED UNSPECIFIED UNSPECIFIED Gessner, Isabel UNSPECIFIED orcid.org/0000-0001-9674-161X UNSPECIFIED Oez, Senol UNSPECIFIED UNSPECIFIED UNSPECIFIED Ilyas, Shaista UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-190047
DOI:	10.1007/s40097-018-0252-y
Journal or Publication Title:	J. Nanostructure Chem.
Volume:	8
Number:	1
Page Range:	S. 33 - 45
Date:	2018
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	2193-8865
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language RAY PHOTOELECTRON-SPECTROSCOPY; CLICK CHEMISTRY; SURFACE FUNCTIONALIZATION; COLLOIDAL PARTICLES; JANUS PARTICLES; SILICA SPHERES; HALF-SHELLS; NANOPROBES; COMPOSITE; DELIVERY Multiple languages Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19004