Reversible control of properties of materials by thermally irreversible photochromism

Photochromism of thermally irreversible fulgides and diarylethenes can control not only the absorption spectra but also other chemical/physical properties by photoirradiation, such as supramolecular interaction to guest molecules, cholesteric liquid crystalline properties, and the chiroptical properties. The association constants originated from the triplex hydrogen bonds between the colored form of an indolylfulgimide and an acylated 2,6-bisaminopyridine increased when it was irradiated by visible light. The cholesteric pitch length was increased when a cholesteric liquid crystal composed of a mixture of the colored form of a binaphthol-condensed indolylfulgide and a nematic liquid crystal was irradiated by visible light. An allylic 1,3-strain-controlled diastereoselective photochromic ring-closing reaction of a bisthienylethene showed as high as 88% diastereomer excess (de) with 85% conversion to the colored form in various solvents at room temperature. © 2004 Elsevier B.V. All rights reserved.

Yazar Yokoyama Y.
Kose M.
Yayın Türü Review
Tek Biçim Adres https://hdl.handle.net/20.500.12628/7423
Tek Biçim Adres 10.1016/j.jphotochem.2004.04.023
Koleksiyonlar Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed | SOBİAD
Scopus İndeksli Yayınlar Koleksiyonu
Sayfalar 9 - 18
Yayın Yılı 2004
Eser Adı
[dc.title]
Reversible control of properties of materials by thermally irreversible photochromism
Yayın Yılı
[dc.date.issued]
2004
Yayıncı
[dc.publisher]
Elsevier
Yayın Türü
[dc.type]
review
Özet
[dc.description.abstract]
Photochromism of thermally irreversible fulgides and diarylethenes can control not only the absorption spectra but also other chemical/physical properties by photoirradiation, such as supramolecular interaction to guest molecules, cholesteric liquid crystalline properties, and the chiroptical properties. The association constants originated from the triplex hydrogen bonds between the colored form of an indolylfulgimide and an acylated 2,6-bisaminopyridine increased when it was irradiated by visible light. The cholesteric pitch length was increased when a cholesteric liquid crystal composed of a mixture of the colored form of a binaphthol-condensed indolylfulgide and a nematic liquid crystal was irradiated by visible light. An allylic 1,3-strain-controlled diastereoselective photochromic ring-closing reaction of a bisthienylethene showed as high as 88% diastereomer excess (de) with 85% conversion to the colored form in various solvents at room temperature. © 2004 Elsevier B.V. All rights reserved.
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1016/j.jphotochem.2004.04.023
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7423
Yayın Dili
[dc.language.iso]
eng
Yazar
[dc.contributor.author]
Yokoyama Y.
Yazar
[dc.contributor.author]
Kose M.
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
İlk Sayfa Sayısı
[dc.identifier.startpage]
9
Son Sayfa Sayısı
[dc.identifier.endpage]
18
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
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1
09.12.2022 tarihinden bu yana
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properties colored liquid cholesteric increased visible irradiated crystal allylic 3-strain-controlled nematic photochromic indolylfulgide rights binaphthol-condensed reserved mixture composed diastereoselective ring-closing Elsevier solvents various temperature conversion excess diastereomer showed bisthienylethene reaction Photochromism length absorption photoirradiation chemical/physical
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