We applied a fluorescence microscopy method to investigate the possibility of molecular manipulation such as intentional transfer of molecules from one zeolite crystal to another. Photophysical and photochemical processes of guest species incorporated in the zeolites were exploited as indicator reactions in order to yield a luminescence color characteristic of individual zeolite particles. Two types of migration mechanisms were observed: a through-space diffusional-transfer mode between separated zeolite crystals and a molecular injection process from a loaded crystal to another unloaded crystal, both in contact. A preferential direction of guest migration was found to exist for a few cases: for instance, aromatics such as phenanthrene and chrysene migrate from the sodium form of zeolite X (Na+-X) to thallium-exchanged zeolite X (Tl+-X). On the other hand, the migration-assisted formation of charge-transfer complexes between electron-donating arenes such as phenanthrene and chrysene, and electron-accepting 1,2,4,5-tetracyanobenzene, both incorporated into separate zeolite Na+-X crystals, takes place as a result of the migration of the donors. The fluorescence microscopy method utilizing photochemistry in zeolites was found to be a powerful technique for the qualitative investigation of the intercrystalline migration and possibly applicable to the observation of particleto-particle molecular manipulation processes.
Research on Chemical Intermediates – Springer Journals
Published: Mar 1, 2004
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera