Crystal Melting by Light: X-ray Crystal Structure Analysis of an Azo Crystal Showing Photoinduced Crystal-Melt Transition
Trans—cis photoisomerization in an azo compound containing azobenzene chromophores and long alkyl chains leads to a photoinduced crystal-melt transition (PCMT). X-ray structure analysis of this crystal clarifies the characteristic coexistence of the structurally ordered chromophores through their π•...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 25; pp. 9158 - 9165 |
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| Autores principales: | , , , , , , , , |
| Formato: | Artículo |
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American Chemical Society
6/25/2014
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=96974426&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 96974426 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 6/25/2014 vid: 136 iid: 25 pid: 997 pub: American Chemical Society artinfo: ui: 96974426 10.1021/ja503652c ppf: 9158 ppct: 7 formats: tig: atl: Crystal Melting by Light: X-ray Crystal Structure Analysis of an Azo Crystal Showing Photoinduced Crystal-Melt Transition aug: au: Manabu Hoshino Emi Uchida Yasuo Norikane Reiko Azumi Shunsuke Nozawa Ayana Tomita Tokushi Sato Shin-ichi Adachi Shin-ya Koshihara affil: Department of Chemistry & Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan CREST, Japan Science & Technology Agency (JST), Chiyoda-ku, Tokyo 102-0076, Japan Electronics & Photonics Research Institute, National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan Photon Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan PRESTO, Japan Science & Technology Agency (JST), Chiyoda-ku, Tokyo 102-0076, Japan su: Crystal structure research Azo compounds Photoisomerization Phase transitions Pi bonds (Chemistry) Cis-trans isomerism Chromophores Azobenzene sug: subj: Crystal structure research Azo compounds Photoisomerization Phase transitions Pi bonds (Chemistry) Cis-trans isomerism Chromophores Azobenzene ab: Trans—cis photoisomerization in an azo compound containing azobenzene chromophores and long alkyl chains leads to a photoinduced crystal-melt transition (PCMT). X-ray structure analysis of this crystal clarifies the characteristic coexistence of the structurally ordered chromophores through their π• • •π interactions and disordered alkyl chains around room temperature. These structural features reveal that the PCMT starts near the surface of the crystal and propagates into the depth, sacrificing the π• • •π interactions. A temporal change of the powder X-ray diffraction pattern under light irradiation and a two-component phase diagram allow qualitative analysis of the PCMT and the following reconstructive crystallization of the cis isomer as a function of product accumulation. This is the first structural characterization of a compound showing the PCMT, overcoming the low periodicity that makes X-ray crystal structure analysis difficult. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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