Charge Transfer Like Complexes of Organic Dyes Adsorbed at Colloidal Silver studied by Cyclic Voltammetry, UV-vis and SERS Spectroscopy
After adding cationic dyes like oxazine 170, malachite green, and crystal violet to a solution of colloidal silver sometimes an absorption band appears at wavelengths > 750 nm which is neither caused by the monomeric dye nor by a coagulation of the colloid. Based on electrochemical measurements t...
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| Veröffentlicht in: | Berichte der Bunsengesellschaft für Physikalische Chemie 1997-01, Vol.101 (1), p.41-49 |
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| container_end_page | 49 |
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| container_title | Berichte der Bunsengesellschaft für Physikalische Chemie |
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| creator | Nickel, U. Halbig, P. Gliemann, H. Schneider, S. |
| description | After adding cationic dyes like oxazine 170, malachite green, and crystal violet to a solution of colloidal silver sometimes an absorption band appears at wavelengths > 750 nm which is neither caused by the monomeric dye nor by a coagulation of the colloid. Based on electrochemical measurements this new absorption band is assigned to a chinhydron‐like adsorption geometry of the dye. Usually this band is only observed at low concentration of the dye, whereas at higher concentration the formation of H‐aggregates occurs. There seems to be a relationship between the intensity of this band and the SERS activity. |
| doi_str_mv | 10.1002/bbpc.19971010105 |
| format | Article |
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Based on electrochemical measurements this new absorption band is assigned to a chinhydron‐like adsorption geometry of the dye. Usually this band is only observed at low concentration of the dye, whereas at higher concentration the formation of H‐aggregates occurs. 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| fulltext | fulltext |
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| ispartof | Berichte der Bunsengesellschaft für Physikalische Chemie, 1997-01, Vol.101 (1), p.41-49 |
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| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Adsoprtion Colloides Cyclic Voltammetry SERS Spectroscopy Spectroscopy, Visible Visible |
| title | Charge Transfer Like Complexes of Organic Dyes Adsorbed at Colloidal Silver studied by Cyclic Voltammetry, UV-vis and SERS Spectroscopy |
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