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Nanosensors having dipicolinic acid imprinted nanoshell for Bacillus cereus spores detection
- Source :
- Journal of Nanoparticle Research. 12:2069-2079
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- WOS: 000280240600013<br />Molecular imprinted polymers (MIPs) as a recognition element for sensors are increasingly of interest and MIP nanoclusters have started to appear in the literature. In this study, we have proposed a novel thiol ligand-capping method with polymerizable methacryloylamido-cysteine (MAC) attached to gold-silver nanoclusters, reminiscent of a self-assembled monolayer and have reconstructed surface shell by synthetic host polymers based on molecular imprinting method for recognition. In this method, methacryloylamidoantipyrine-terbium ((MAAP)(2)-Tb(III)) has been used as a new metal-chelating monomer via metal coordination-chelation interactions and dipicolinic acid (DPA) which is main participant of Bacillus cereus spores used as a model. Nanoshell sensors with templates give a cavity that is selective for DPA. The DPA can simultaneously chelate to Tb(III) metal ion and fit into the shape-selective cavity. Thus, the interaction between Tb(III) ion and free coordination spheres has an effect on the binding ability of the gold-silver nanoclusters nanosensor. The binding affinity of the DPA imprinted nanoclusters has been investigated by using the Langmuir and Scatchard methods, and the respective affinity constants (K (affinity)) determined were found to be 1.43 x 10(4) and 9.1 x 10(6) mol L(-1).
- Subjects :
- Dipicolinic Acid
Materials science
Bioengineering
Nanotechnology
Nanoclusters
Gold-Silver Nanoclusters Sensor
chemistry.chemical_compound
Molecularly Imprinted Polymers
Monolayer
General Materials Science
Photoluminescence
Bacillus Cereus Spores Recognition
chemistry.chemical_classification
fungi
Molecularly imprinted polymer
General Chemistry
Polymer
Condensed Matter Physics
Dipicolinic acid
Combinatorial chemistry
Atomic and Molecular Physics, and Optics
Nanoshell
Monomer
chemistry
Modeling and Simulation
Molecular imprinting
Subjects
Details
- ISSN :
- 1572896X and 13880764
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Nanoparticle Research
- Accession number :
- edsair.doi.dedup.....4fe697c7a23a5714e1aa697369b6a7d0