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Gold nanoparticles functionalized with deep-cavity cavitands: synthesis, characterization, and photophysical studies
- Source :
- Langmuir : the ACS journal of surfaces and colloids. 28(32)
- Publication Year :
- 2012
-
Abstract
- In this report, we present methods of functionalization of AuNP's with deep-cavity cavitands that can include organic molecules. Two types of deep-cavity cavitand-functionalized AuNP's have been synthesized and characterized, one soluble in organic solvents and the other in water. Functionalized AuNP soluble in organic solvents forms a 1:1 host–guest complex where the guest is exposed to the exterior solvents. The one soluble in water forms a 2:1 host–guest complex where the guest is protected from solvent water. Phosphorescence from thiones and benzil included within heterocapsules attached to AuNP was quenched by gold atoms present closer to the guests included within deep-cavity cavitands. During this investigation, we have synthesized four new deep-cavity cavitands. Of these, two thiol-functionalized hosts allowed us to make stable AuNP's. However, AuNP's protected with two amine-functionalized cavitands tended to aggregate within a day.
- Subjects :
- Surfaces and Interfaces
Condensed Matter Physics
Characterization (materials science)
Organic molecules
Solvent
chemistry.chemical_compound
chemistry
Colloidal gold
Polymer chemistry
Electrochemistry
Surface modification
Organic chemistry
General Materials Science
Benzil
Phosphorescence
Spectroscopy
Subjects
Details
- ISSN :
- 15205827
- Volume :
- 28
- Issue :
- 32
- Database :
- OpenAIRE
- Journal :
- Langmuir : the ACS journal of surfaces and colloids
- Accession number :
- edsair.doi.dedup.....2eb190503bd5c9927eb74a04577d7f7b