English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The process of light conversion is at present deeply investigated to develop more efficient devices for artificial photosynthesis, water splitting,\udphotovoltaic applications, and targeting therapeutic agents. This process is induced by nanostructured functional materials, such as zeolites light sensitized\udby dye molecules adsorbed into their pores. Here a detailed study of the organization of the cationic dye thionine (Th) inserted into the linear 12MR\udchannels of zeolite L is carried out by XRPD, FT-IR spectroscopy for the determination of the host−guest interactionsand UV−vis absorption and\udphotoluminescence spectroscopies for the investigation of the electronic states of the guest. Two composites with different Th loading (labeled ZL/0.15Th\udand ZL/0.27Th) were obtained through ion exchange. TGA spectra and IR-ATR spectroscopy clearly indicated penetration of Th molecules into the ZL\udchannels. Rietveld structural refinement showed that Th molecules in both composites are aligned parallel to the 12MR channel axis and located on the mirror planes parallel to the c-axis. Water molecules\udinteract strongly with the dye and form a kind of solvent−matrix tube shaped around the Th molecule, favoring the upright\udarrangement of the molecules. DR−UV−vis spectra of the ZL/Th composites indicated that Th molecules are hosted in the ZL\udchannels in a monomeric form. Photoluminescence spectroscopy demonstrated that photoluminescent dyes correspond to ca.\ud5% of the total amount of Th molecules in the zeolite porosities. While most of the photoluminescent Th molecules exhibit a\udlifetime equivalent to Th in solutions, the complementary fraction of photoluminescent Th exhibit significantly longer lifetimes,\udresulting from an entrapment in defects of the zeolite structure, inducing strong rotational constraints to the molecules

Thionine Dye Confined in Zeolite L: Synthesis Location and Optical Properties