Universität zu Köln

Schuetz, Markus B., Le, Khan, Ilyas, Shaista and Mathur, Sanjay ORCID: 0000-0003-2765-2693 (2020). Reversible Covalent Assembly of Nanoparticles through On-Surface Diets-Alder Reaction. Langmuir, 36 (6). S. 1552 - 1559. WASHINGTON: AMER CHEMICAL SOC. ISSN 0743-7463

Full text not available from this repository.

Abstract

We demonstrate here a controlled assembly of individual nanoscale building blocks into defined architectures based on chemospecific covalent bonding interactions. For this purpose, alpha-Fe2O3, gamma-Fe2O3, and SiO2 nanoparticles decorated with surface-conjugated organic ligands were used for performing on-surface Diets-Alder reactions. Driven through their chemical affinity and surface-grafted complementary functionalities, nanoparticles underwent click-reactions to produce covalently organized nanostructures. An advantage of using the Diels-Alder reaction is its reversible nature, which was used to click and unclick the nanoparticles on demand. The efficiency and chemical specificity of this approach opens up another synthetic access to unify materials with complementary properties, where the thermoresponsive nature of particle assemblies imparts to them a fully reversible character. The covalent conjugation strategies demonstrated in this work potentially allow the use of a diverse range of particles and ligands for their applications in different disciplines such as medicine, optics, or photonics. The nanoparticles morphology and crystalline nature were investigated by TEM and XRD analysis, while the presence of surface attached groups was verified by NMR, FTIR, UV-vis, and potential measurements.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schuetz, Markus B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Le, Khan UNSPECIFIED UNSPECIFIED UNSPECIFIED Ilyas, Shaista UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED orcid.org/0000-0003-2765-2693 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-344609
DOI:	10.1021/acs.langmuir.9b02261
Journal or Publication Title:	Langmuir
Volume:	36
Number:	6
Page Range:	S. 1552 - 1559
Date:	2020
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	0743-7463
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 JANUS PARTICLES; IN-VITRO Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/34460