Photochromic Properties of New Benzoindene‐Fused 2 H ‐Chromenes
The synthesis and the photochromic properties of new photochromic 6,7‐ and 7,8‐benzoindene annellated benzopyrans are described. When compared to parent indeno‐fused 2 H ‐chromenes (2 H ‐[1]benzopyrans), compounds 10 and 12 exhibit a significant bathochromic shift of maximum‐absorption wavelength, a...
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| Veröffentlicht in: | Helvetica chimica acta 2003-03, Vol.86 (3), p.570-578 |
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| container_end_page | 578 |
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| container_issue | 3 |
| container_start_page | 570 |
| container_title | Helvetica chimica acta |
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| creator | Martins, Cristina I. Coelho, Paulo J. Carvalho, Luis M. Oliveira‐Campos, Ana M. F. Samat, André Guglielmetti, Robert |
| description | The synthesis and the photochromic properties of new photochromic 6,7‐ and 7,8‐benzoindene annellated benzopyrans are described. When compared to parent indeno‐fused 2
H
‐chromenes (2
H
‐[1]benzopyrans), compounds
10
and
12
exhibit a significant bathochromic shift of maximum‐absorption wavelength, an increase in the colorability, and similar fading rates. |
| doi_str_mv | 10.1002/hlca.200390057 |
| format | Article |
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H
‐chromenes (2
H
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10
and
12
exhibit a significant bathochromic shift of maximum‐absorption wavelength, an increase in the colorability, and similar fading rates.</abstract><doi>10.1002/hlca.200390057</doi><tpages>9</tpages></addata></record> |
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| ispartof | Helvetica chimica acta, 2003-03, Vol.86 (3), p.570-578 |
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| source | Wiley Online Library Journals Frontfile Complete |
| title | Photochromic Properties of New Benzoindene‐Fused 2 H ‐Chromenes |
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