Supramolecular Translation of Enzymatically Triggered Disassembly of Micelles into Tunable Fluorescent Responses
| Autor: | Assaf J. Harnoy, Marina Buzhor, Ayana Barak, Tal Schwartz, Einat Tirosh, Roey J. Amir |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Dendrimers Drug Carriers Polymers Stereochemistry Organic Chemistry Esterases technology industry and agriculture Supramolecular chemistry Nanoparticle General Chemistry Polymer Micelle Fluorescence Catalysis Polyethylene Glycols chemistry Dendrimer Biophysics Nanoparticles Nanocarriers Drug carrier Hydrophobic and Hydrophilic Interactions Micelles Fluorescent Dyes |
| Zdroj: | Chemistry - A European Journal. 21:15633-15638 |
| ISSN: | 0947-6539 |
| Popis: | The need for advanced fluorescent imaging and delivery platforms has motivated the development of smart probes that change their fluorescence in response to external stimuli. Here a new molecular design of fluorescently labeled PEG-dendron hybrids that self-assemble into enzyme-responsive micelles with tunable fluorescent responses is reported. In the assembled state, the fluorescence of the dyes is quenched or shifted due to intermolecular interactions. Upon enzymatic cleavage of the hydrophobic end-groups, the labeled polymeric hybrids become hydrophilic, and the micelles disassemble. This supramolecular change is translated into a spectral response as the dye-dye interactions are eliminated and the intrinsic fluorescence is regained. We demonstrate the utilization of this molecular design to generate both Turn-On and spectral shift responses by adjusting the type of the labeling dye. This approach enables transformation of non-responsive labeling dyes into smart fluorescent probes. |
| Databáze: | OpenAIRE |
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