| Автор | Berthet, J??r??me |
| Автор | Delbaere, St??phanie |
| Автор | Levi, David |
| Автор | Samat, Andr?? |
| Автор | Guglielmetti, Robert |
| Автор | Vermeersch, Gaston |
| Дата выпуска | 2002 |
| dc.description | The behaviour of a new biphotochromic molecule (CCâ Z), formed by two naphthopyran moieties linked through a (Z)-ethenic double bond, has been studied by <sup>1</sup>H and <sup>19</sup>F NMR spectroscopy. To facilitate the investigations, a naphthopyran (CHR) and a model constituted by a naphthopyran entity linked through a double bond spacer to a methoxynaphthalene nucleus (Câ Z) were also studied. At first, the studies were performed at low temperature (228 K) to extract the <sup>1</sup>H and <sup>19</sup>F NMR chemical shifts characterising photomerocyanines. Thereafter, the behaviour at ambient temperature was checked, identifying a major reaction of (Zâ E) isomerisation as well as an intramolecular cyclisation reaction. An unexpected thermal opening of the naphthopyran entities in the cyclised form was also observed, leading to an equilibrium between the different stereoisomers of the photomerocyanines. |
| Формат | application.pdf |
| Издатель | Royal Society of Chemistry |
| Название | Studies of polyphotochromic behaviour of supermolecules by NMR spectroscopy. Part 2. A bis-[3H]naphthopyran with a (Z)-ethenic bridge between each moietyPart 1 is indicated in ref. 5. |
| Тип | research-article |
| DOI | 10.1039/b203014d |
| Electronic ISSN | 1474-9092 |
| Print ISSN | 1474-905X |
| Журнал | Photochemical & Photobiological Sciences |
| Том | 1 |
| Первая страница | 665 |
| Последняя страница | 672 |
| Аффилиация | Berthet Jérôme; UPRESA CNRS 8009, Laboratoire de Physique et d'Application RMN, Faculté de Pharmacie |
| Аффилиация | Delbaere Stéphanie; UPRESA CNRS 8009, Laboratoire de Physique et d'Application RMN, Faculté de Pharmacie |
| Аффилиация | Levi David; UMR CNRS 6114, LCMOM, Faculté des Sciences de Luminy |
| Аффилиация | Samat André; UMR CNRS 6114, LCMOM, Faculté des Sciences de Luminy |
| Аффилиация | Guglielmetti Robert; UMR CNRS 6114, LCMOM, Faculté des Sciences de Luminy |
| Аффилиация | Vermeersch Gaston; UPRESA CNRS 8009, Laboratoire de Physique et d'Application RMN, Faculté de Pharmacie |
| Выпуск | 9 |
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