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Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors
Published on: September 10, 2013
Fluorophore-cored dendrimers for patterns in metalloprotein sensing
Siriporn Jiwpanich1, Britto S Sandanaraj, S Thayumanavan
1Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA.
Chemical Communications (Cambridge, England)
|March 27, 2009
Summary
The study shows that the generation of dendrimers impacts protein binding-induced fluorescence quenching unpredictably. This effect arises from the complex interplay between increasing fluorophore-binding functionality distance and the number of binding sites with higher dendrimer generations.
Area of Science:
- Supramolecular Chemistry
- Nanotechnology
- Analytical Chemistry
Background:
- Dendrimers are highly branched macromolecules with tunable properties.
- Fluorophore-cored dendrimers are used in sensing applications.
- Protein binding can induce fluorescence quenching in these systems.
Purpose of the Study:
- To investigate the effect of dendrimer generation on protein binding-induced fluorescence quenching.
- To understand the relationship between dendrimer architecture and sensing performance.
- To explore the potential of dendrimers for metalloprotein sensing.
Main Methods:
- Synthesis of fluorophore-cored dendrimers with peripheral binding functionalities across different generations.
- Spectroscopic analysis to monitor fluorescence quenching upon protein binding.
- Computational modeling to understand the structural factors influencing quenching.
Main Results:
- Fluorescence quenching efficiency showed unpredictable behavior with increasing dendrimer generation.
- An increased distance between the fluorophore core and binding sites was observed with higher generations.
- The number of binding moieties also increased with generation, creating complex interplay.
Conclusions:
- The generation of dendrimers significantly influences protein binding-induced fluorescence quenching in an unpredictable manner.
- The interplay between distance and the number of binding sites is crucial for metalloprotein sensing patterns.
- These findings provide insights for designing advanced dendrimer-based sensors.
