Efficient singlet-singlet energy transfer in a novel host-guest assembly composed of an organic cavitand, aromatic molecules, and a clay nanosheet

Yohei Ishida, Revathy Kulasekharan, Tetsuya Shimada, Shinsuke Takagi, Vaidhyanathan Ramamurthy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A supramolecular host-guest assembly composed of a cationic organic cavitand (host), neutral aromatic molecules (guests), and an anionic clay nanosheet has been prepared and demonstrated that in this arrangement efficient singlet-singlet energy transfer could take place. The novelty of this system is the use of a cationic organic cavitand that enabled neutral organic molecules to be placed on an anionic saponite nanosheet. Efficient singlet-singlet energy transfer between neutral pyrene and 2-acetylanthracene enclosed within a cationic organic cavitand (octa amine) arranged on a saponite nanosheet was demonstrated through steady-state and time-resolved emission studies. The high efficiency was realized from the suppression of aggregation, segregation, and self-fluorescence quenching. We believe that the studies presented here using a novel supramolecular assembly have expanded the types of molecules that could serve as candidates for efficient energy-transfer systems, such as in an artificial light-harvesting system.

Original languageEnglish
Pages (from-to)1748-1753
Number of pages6
JournalLangmuir
Volume29
Issue number6
DOIs
StatePublished - Feb 12 2013

Fingerprint

Nanosheets
Energy transfer
clays
Clay
assembly
energy transfer
Molecules
molecules
Pyrene
pyrenes
Amines
Quenching
amines
Agglomeration
Fluorescence
quenching
retarding
fluorescence
cavitand
clay

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Efficient singlet-singlet energy transfer in a novel host-guest assembly composed of an organic cavitand, aromatic molecules, and a clay nanosheet. / Ishida, Yohei; Kulasekharan, Revathy; Shimada, Tetsuya; Takagi, Shinsuke; Ramamurthy, Vaidhyanathan.

In: Langmuir, Vol. 29, No. 6, 12.02.2013, p. 1748-1753.

Research output: Contribution to journalArticle

Ishida, Yohei ; Kulasekharan, Revathy ; Shimada, Tetsuya ; Takagi, Shinsuke ; Ramamurthy, Vaidhyanathan. / Efficient singlet-singlet energy transfer in a novel host-guest assembly composed of an organic cavitand, aromatic molecules, and a clay nanosheet. In: Langmuir. 2013 ; Vol. 29, No. 6. pp. 1748-1753.
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