Photophysical studies of an encapsulated neutral guest intercalated into the 2-dimensional space of α-Zr(iv) phosphate

Elamparuthi Ramasamy, Inoka K. Deshapriya, Revathy Kulasekharan, Challa V. Kumar, V. Ramamurthy

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Our long-range objective of developing surface anchored supramolecular assemblies as artificial light harvesting systems led us to explore the intercalation of guest molecules confined within octaamine hydrochloride (OAm·HCl) in the 2-dimensional galleries of layered inorganic material α-Zr(iv)phosphate (α-ZrP). Photophysical properties of 4,4′-dimethylbenzil, camphorthione, 4,4′-dimethylstilbene, pyrene and coumarin-1 were used to probe the intercalation behavior of OAm capsules within the galleries of α-ZrP. 1H NMR and emission spectral investigations suggested the inclusion of guests within OAm and also confirmed the stability of host-guest complexes under acidic conditions in water. Stirring guest encapsulated OAm capsule with exfoliated α-ZrP nanosheets resulted in intercalation of the host-guest assembly as a whole in the case of 4,4′-dimethylbenzil, camphorthione, and 4,4′-dimethylstilbene as guests. According to powder X-ray diffraction and emission data these capsules are stable in the galleries of α-ZrP. The fact that the capsules are stable and can be included in α-ZrP nanosheets opens up further opportunities to explore inclusion of two different capsules, one with a donor and the other with an acceptor, and study the energy and electron transfer phenomenon between neutral molecules in α-ZrP galleries. This journal is

Original languageEnglish (US)
Pages (from-to)301-309
Number of pages9
JournalPhotochemical and Photobiological Sciences
Issue number2
StatePublished - Feb 2014

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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