Amplified spontaneous emission from the film of poly(aryl ether) dendrimer encapsulating excited-state intramolecular proton transfer dye

Sehoon Kim, Soo Young Park, Iori Yoshida, Hideki Kawai, Toshihiko Nagamura

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Nonresonant exponential amplification of the excited-state intramolecular proton transfer (ESIPT) emission has been investigated with the film of ESIPT dendrimer (QG2) by pico- and femtosecond laser experiments. The intrinsic four-level nature of ESIPT and the reduced concentration quenching by dendritic effect made QG2 film an optical gain medium with the threshold intensity lower than 20 μJ/cm2/pulse. The characteristics of emission amplification are discussed in terms of the amplified spontaneous emission (ASE) related with ESIPT.

Original languageEnglish
Pages (from-to)9291-9294
Number of pages4
JournalJournal of Physical Chemistry B
Volume106
Issue number36
DOIs
Publication statusPublished - 2002 Sep 12
Externally publishedYes

Fingerprint

Dendrimers
encapsulating
Proton transfer
Spontaneous emission
dendrimers
Excited states
Ether
spontaneous emission
Protons
Ethers
ethers
Coloring Agents
Dyes
dyes
protons
excitation
Amplification
Optical gain
Ultrashort pulses
Quenching

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Amplified spontaneous emission from the film of poly(aryl ether) dendrimer encapsulating excited-state intramolecular proton transfer dye. / Kim, Sehoon; Park, Soo Young; Yoshida, Iori; Kawai, Hideki; Nagamura, Toshihiko.

In: Journal of Physical Chemistry B, Vol. 106, No. 36, 12.09.2002, p. 9291-9294.

Research output: Contribution to journalArticle

Kim, Sehoon ; Park, Soo Young ; Yoshida, Iori ; Kawai, Hideki ; Nagamura, Toshihiko. / Amplified spontaneous emission from the film of poly(aryl ether) dendrimer encapsulating excited-state intramolecular proton transfer dye. In: Journal of Physical Chemistry B. 2002 ; Vol. 106, No. 36. pp. 9291-9294.
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