dc.contributor.author | Riley, A. E. | en |
dc.contributor.author | Mitchell, G. W. | en |
dc.contributor.author | Koutentis, Panayiotis Andreas | en |
dc.contributor.author | Bendikov, M. | en |
dc.contributor.author | Kaszynki, P. | en |
dc.contributor.author | Wudl, F. | en |
dc.contributor.author | Tolbert, S. H. | en |
dc.creator | Riley, A. E. | en |
dc.creator | Mitchell, G. W. | en |
dc.creator | Koutentis, Panayiotis Andreas | en |
dc.creator | Bendikov, M. | en |
dc.creator | Kaszynki, P. | en |
dc.creator | Wudl, F. | en |
dc.creator | Tolbert, S. H. | en |
dc.date.accessioned | 2019-11-21T06:22:38Z | |
dc.date.available | 2019-11-21T06:22:38Z | |
dc.date.issued | 2003 | |
dc.identifier.issn | 1616-301X | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/56088 | |
dc.description.abstract | A 5,7-dioctadecylquinoxalinophenazine zwitterion 1 has been investigated to determine its thermal phase behavior. A combination of differential scanning calorimetry (DSC), variable temperature low- and high-angle X-ray diffraction (XRD), and deuterium solid-state NMR spectroscopy were used to characterize the different phases of the tetraazapentacene 1. This molecule is found to exist in a variety of crystalline solid phases between room temperature and 167 °C. with different room-temperature phases resulting from crystallization from solution compared with cooling from the melt. Interestingly, the molecule exhibits liquid-crystalline behavior at high temperatures, between 167 °C and 186 °C, above which it becomes an isotropic fluid. The presence of liquid-crystalline behavior in a zwitterionic system opens up the potential for the use of these or related molecules in optoelectronic switching. | en |
dc.source | Advanced Functional Materials | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0041307101&doi=10.1002%2fadfm.200304223&partnerID=40&md5=989452c06d57e5854fc7f0411ab51ac1 | |
dc.subject | Switching | en |
dc.subject | Nuclear magnetic resonance spectroscopy | en |
dc.subject | Crystallization | en |
dc.subject | X ray diffraction | en |
dc.subject | Phase composition | en |
dc.subject | Differential scanning calorimetry | en |
dc.subject | Liquid crystals | en |
dc.subject | High temperature effects | en |
dc.subject | Optoelectronic devices | en |
dc.subject | Olefins | en |
dc.subject | Phase behavior | en |
dc.title | Liquid-crystalline phase behavior in a zwitterionic tetraazapentacene | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1002/adfm.200304223 | |
dc.description.volume | 13 | |
dc.description.issue | 7 | |
dc.description.startingpage | 531 | |
dc.description.endingpage | 540 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :25</p> | en |
dc.source.abbreviation | Adv.Funct.Mater. | en |
dc.contributor.orcid | Koutentis, Panayiotis Andreas [0000-0002-4652-7567] | |
dc.gnosis.orcid | 0000-0002-4652-7567 | |