Cucurbit[7]uril Disrupts Aggregate Formation Between Rhodamine B Dyes Covalently Attached to Glass Substrates
| Autor: | Ronald L. Halterman, Jason L. Moore, Wai Tak Yip |
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| Rok vydání: | 2011 |
| Předmět: |
Bridged-Ring Compounds
Sociology and Political Science Surface Properties Clinical Biochemistry Triazole Photochemistry Biochemistry Fluorescence Rhodamine chemistry.chemical_compound Rhodamine B Spectroscopy Aqueous solution Molecular Structure Rhodamines Chemistry Imidazoles Clinical Psychology Spectrometry Fluorescence Covalent bond Propargyl Glass Absorption (chemistry) Law Social Sciences (miscellaneous) |
| Zdroj: | Journal of Fluorescence. 21:1467-1478 |
| ISSN: | 1573-4994 1053-0509 |
| DOI: | 10.1007/s10895-011-0832-4 |
| Popis: | Dye aggregation is detrimental to the performance of high optical density dye-doped photonic materials. To overcome this challenge, the ability of cucurbit[7]uril (CB7) as a molecular host to disrupt aggregate formation on glass substrates was examined. Rhodamine B was covalently attached to glass slides by initially coating the surface with azidohexylsiloxane followed by copper-catalyzed "click" triazole formation with rhodamine B propargyl ester. The absorption and emission spectra of rhodamine B coated slides in water indicated diverse heterogeneous properties as surface dye density varied. Fluorescence quenching due to dye aggregation was evident at high surface dye density. Addition of aqueous cucurbit[7]uril (CB7) to the surface-tethered dyes perturbed the spectra to reveal a considerable reduction in heterogeneity, which suggested that the presence of a surface in close proximity does not significantly impair CB7's ability to complex with tethered rhodamine B. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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