Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/1549
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Pana, Amalia | - |
dc.contributor.author | Badea, Florentina Laura | - |
dc.contributor.author | Ilis, Monica | - |
dc.contributor.author | Staicu, Teodora | - |
dc.contributor.author | Micutz, Marin | - |
dc.contributor.author | Pasuk, Iuliana | - |
dc.contributor.author | Circu, Viorel | - |
dc.date.accessioned | 2019-10-31T12:59:51Z | - |
dc.date.available | 2019-10-31T12:59:51Z | - |
dc.date.issued | 2015 | - |
dc.identifier.issn | 0022-2860 | - |
dc.identifier.other | DOI: 10.1016/j.molstruc.2014.11.059 | - |
dc.identifier.uri | http://hdl.handle.net/123456789/1549 | - |
dc.description | Journal of Molecular Structure, 2015, 1083, pp. 245-251 | en_US |
dc.description.abstract | A series of 3,4,5-tridodecyloxybenzyl pyridinium salts derived from 4-hydroxypyridine has been designed and prepared. The liquid crystalline properties of these compounds were investigated by polarized optical microscopy, differential scanning calorimetry and powder X-ray diffraction while their thermal stability was studied by thermogravimetric analysis. The N-3,4,5-tridodecyloxybenzyl-4-pyridone intermediate shows a monotropic columnar hexagonal mesophase ranging from 56 C down to room temperature while the corresponding bromide dodecyl O-alkylated pyridinium salt shows one enantiotropic columnar mesophase and one additional monotropic columnar phase at lower temperatures. Replacing bromide ion (Br ) with other counterions (NO 3 ; BF 4 and PF 6 ) resulted in mesophase suppression. These luminescent pyridinium salts show weak emission in dichloromethane solutions at room temperature and a pronounced red-shifted emission in solid state. Photoluminescent properties of the pyridinium salts do not depend significantly on the nature of counterion employed. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.subject | Ionic liquid crystals | en_US |
dc.subject | 4-Hydroxypyridine | en_US |
dc.subject | Pyridinium salts | en_US |
dc.subject | 4-Pyridone | en_US |
dc.subject | Columnar mesophase | en_US |
dc.title | Effect of counterion on the mesomorphic behavior and optical properties of columnar pyridinium ionic liquid crystals derived from 4-hydroxypyridine | en_US |
dc.type | Article | en_US |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | reserved | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en_US | - |
Appears in Collections: | Articles |
Files in This Item:
File | Description | Size | Format | Existing users please |
---|---|---|---|---|
Effect of counterion on the mesomorphic behavior and optical properties.pdf | 1.38 MB | Adobe PDF | Request a copy |
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.