| Title | Host-guest interactions in gas phase chemical sensing of permethyl-6I-alkenoylamino-6I-deoxy-β-cyclodextrin derivatized porous silicon |
| Publication Type | Journal Article |
| Year of Publication | 2007 |
| Authors | Jelínek I., Vrkoslav V., Trojan T., Jindrich J., Dian J. |
| Journal | Physica Status Solidi (c) |
| Volume | 4 |
| Issue | 6 |
| Pagination | 2083 - 2087 |
| Date Published | 2007/05/01/ |
| ISBN Number | 1610-1642 |
| Keywords | 07.07.Df, 61.66.Hq, 68.43.−h, 78.55.Ap, 78.55.Mb, 82.33.Ln, duplicate |
| Abstract | Porous silicon surface was modified by photochemically activated hydrosilylation reaction with permethyl-6I-alkenoylamino-6I-deoxy-β-cyclodextrins. In the presence of controlled amounts of various organic molecules in gas phase photoluminescence response from this derivatized porous silicon revealed formation of host-guest complexes between β-cyclodextrin and detected molecules. The strongest modification of photoluminescence response was observed for aromatic compounds that have optimal molecular size for strong interaction with β-cyclodextrin cavity. For low concentrations of aromatic molecules we observed PL enhancement most probably due to electron transfer from β-cyclodextrin-analyte complex to porous silicon. For higher concentrations – after saturation of the β-cyclodextrin sites – a combined response with dominant PL quenching was observed. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| URL | http://onlinelibrary.wiley.com/doi/10.1002/pssc.200674376/abstract |
| Short Title | Phys. Status Solidi (c) |
