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 | |
| Publication status | Published - 2007 Oct 25 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
}
Enhanced energy transfer within PVK/Alq3 polymer nanowires induced by the interface effect of nanochannels in porous alumina membrane. / Shin, Hee Won; Shin, Eun Jeong; Cho, Seung Yeon; Oh, Seung Lim; Kim, Yong Rok.
In: Journal of Physical Chemistry C, Vol. 111, No. 42, 25.10.2007, p. 15391-15396.Research output: Contribution to journal › Article
TY - JOUR
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.
UR - http://www.scopus.com/inward/record.url?scp=35748969148&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35748969148&partnerID=8YFLogxK
U2 - 10.1021/jp074203m
DO - 10.1021/jp074203m
M3 - Article
VL - 111
SP - 15391
EP - 15396
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 42
ER -