Enhanced energy transfer within PVK/Alq3 polymer nanowires induced by the interface effect of nanochannels in porous alumina membrane

Hee Won Shin; Eun Jeong Shin; Seung Yeon Cho; Seung Lim Oh; Yong Rok Kim

doi:10.1021/jp074203m

Enhanced energy transfer within PVK/Alq₃ polymer nanowires induced by the interface effect of nanochannels in porous alumina membrane

Hee Won Shin, Eun Jeong Shin, Seung Yeon Cho, Seung Lim Oh, Yong Rok Kim

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The effect of the interfacial interaction between host-guest materials on energy transfer efficiency was investigated. Porous alumina membrane (PAM) was used as the host, and poly(N-vinylcarbazole) (PVK) and tris(8-hydroxyquinoline) aluminum (Alq₃) were guest materials. The energy transfer between PVK and Alq₃ within a PAM shows greatly enhanced efficiency compared with that of the bulk film. Such high efficiency is ascribed to a lowered formation of the fully overlapped form of the PVK excimer, which is induced by strong interaction between the pendant carbazole rings of PVK and the Al centers on the innerchannel surface of the PAM. The photoluminescence lifetimes of PVK become shorter with an increase in the Alq₃ concentration in both films and PAMs, due to the energy transfer. The mean distance between PVK and Alq₃ was estimated by using the Förster formula.

Original language	English
Pages (from-to)	15391-15396
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	42
DOIs	https://doi.org/10.1021/jp074203m
Publication status	Published - 2007 Oct 25

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Enhanced energy transfer within PVK/Alq3 polymer nanowires induced by the interface effect of nanochannels in porous alumina membrane",

abstract = "The effect of the interfacial interaction between host-guest materials on energy transfer efficiency was investigated. Porous alumina membrane (PAM) was used as the host, and poly(N-vinylcarbazole) (PVK) and tris(8-hydroxyquinoline) aluminum (Alq3) were guest materials. The energy transfer between PVK and Alq3 within a PAM shows greatly enhanced efficiency compared with that of the bulk film. Such high efficiency is ascribed to a lowered formation of the fully overlapped form of the PVK excimer, which is induced by strong interaction between the pendant carbazole rings of PVK and the Al centers on the innerchannel surface of the PAM. The photoluminescence lifetimes of PVK become shorter with an increase in the Alq3 concentration in both films and PAMs, due to the energy transfer. The mean distance between PVK and Alq3 was estimated by using the F{\"o}rster formula.",

author = "Shin, {Hee Won} and Shin, {Eun Jeong} and Cho, {Seung Yeon} and Oh, {Seung Lim} and Kim, {Yong Rok}",

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T1 - Enhanced energy transfer within PVK/Alq3 polymer nanowires induced by the interface effect of nanochannels in porous alumina membrane

AU - Shin, Hee Won

AU - Shin, Eun Jeong

AU - Cho, Seung Yeon

AU - Oh, Seung Lim

AU - Kim, Yong Rok

PY - 2007/10/25

Y1 - 2007/10/25

N2 - The effect of the interfacial interaction between host-guest materials on energy transfer efficiency was investigated. Porous alumina membrane (PAM) was used as the host, and poly(N-vinylcarbazole) (PVK) and tris(8-hydroxyquinoline) aluminum (Alq3) were guest materials. The energy transfer between PVK and Alq3 within a PAM shows greatly enhanced efficiency compared with that of the bulk film. Such high efficiency is ascribed to a lowered formation of the fully overlapped form of the PVK excimer, which is induced by strong interaction between the pendant carbazole rings of PVK and the Al centers on the innerchannel surface of the PAM. The photoluminescence lifetimes of PVK become shorter with an increase in the Alq3 concentration in both films and PAMs, due to the energy transfer. The mean distance between PVK and Alq3 was estimated by using the Förster formula.

AB - The effect of the interfacial interaction between host-guest materials on energy transfer efficiency was investigated. Porous alumina membrane (PAM) was used as the host, and poly(N-vinylcarbazole) (PVK) and tris(8-hydroxyquinoline) aluminum (Alq3) were guest materials. The energy transfer between PVK and Alq3 within a PAM shows greatly enhanced efficiency compared with that of the bulk film. Such high efficiency is ascribed to a lowered formation of the fully overlapped form of the PVK excimer, which is induced by strong interaction between the pendant carbazole rings of PVK and the Al centers on the innerchannel surface of the PAM. The photoluminescence lifetimes of PVK become shorter with an increase in the Alq3 concentration in both films and PAMs, due to the energy transfer. The mean distance between PVK and Alq3 was estimated by using the Förster formula.

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