English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181975
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Highly light‐sensitive luminescent cyanostilbene flexible dimers

AuthorsMartínez-Abadía, Marta; Varghese, Shinto; Romero, Pilar ; Gierschner, Johannes; Giménez, Raquel; Ros, M. Blanca
Issue Date2017
CitationAdvanced Optical Materials 5(4): 1600860 (2017)
AbstractSwitchable luminescent organic materials with unusual high light‐sensitivity in the bulk at room temperature are described. The compounds consist of two promesogenic photoactive cyanostilbene units linked by a flexible spacer with an odd number of carbon atoms, analogous to the structural design of a liquid crystal dimer. Experimental and computational studies support the formation of excimers in solution due to the characteristic geometry of the dimers. In their condensed phases they show a high tendency to pack in lamellar phases, exhibiting bent‐core lamellar liquid crystal phases and crystalline polymorphs with different photoluminescence and high quantum yields. The compounds are highly photoreactive, and their photoactivity in terms of photoisomerization and/or photocycloaddition reactions in solution and in the bulk is different. By irradiation of the compounds in the condensed phases at room temperature a fast photochemical process takes place, identified as a photocycloaddition reaction favored by the lamellar packing. Due to this photoreaction a luminescence modulation with green/blue color switching and an increase in quantum yield takes place.
Publisher version (URL)https://doi.org/10.1002/adom.201600860
Appears in Collections:(ICMA) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.