Abstract
The photoluminescent Ru(bpy) 2+3 complex was dispersed in a polysiloxane film containing 2,2′‐bipyridine (bpy) pendant groups. The unusually long photoluminescence lifetime of the Ru(bpy) 2+3 (1,94 μs at 25°C) and the blue‐shifted photoluminescent wavelength suggest a rigid polymer matrix. The fluorescence yield becomes lower with higher probe concentration, indicating concentration quenching. According to the analysis based on Stern‐Volmer plots, the quenching obeys a mechanism composed of both static and dynamic processes. A statistical intermolecular distance distribution between the probes was used to interpret the results in terms of static and dynamic quenching. It is shown that in the present system the dispersed complexes diffuse slightly during the excited state.
| Original language | English |
|---|---|
| Pages (from-to) | 1241-1250 |
| Number of pages | 10 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 196 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1995 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
Cite this
Concentration quenching of photoluminescent Ru(bpy) 2+3 dispersed in a polysiloxane film containing 2,2′‐bipyridine pendant groups in dependence of molecular distribution. / Nagai, Keiji; Ueno, Yukihiko; Takamiya, Nobuo; Kaneko, Masao.
In: Macromolecular Chemistry and Physics, Vol. 196, No. 4, 1995, p. 1241-1250.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Concentration quenching of photoluminescent Ru(bpy) 2+3 dispersed in a polysiloxane film containing 2,2′‐bipyridine pendant groups in dependence of molecular distribution
AU - Nagai, Keiji
AU - Ueno, Yukihiko
AU - Takamiya, Nobuo
AU - Kaneko, Masao
PY - 1995
Y1 - 1995
N2 - The photoluminescent Ru(bpy) 2+3 complex was dispersed in a polysiloxane film containing 2,2′‐bipyridine (bpy) pendant groups. The unusually long photoluminescence lifetime of the Ru(bpy) 2+3 (1,94 μs at 25°C) and the blue‐shifted photoluminescent wavelength suggest a rigid polymer matrix. The fluorescence yield becomes lower with higher probe concentration, indicating concentration quenching. According to the analysis based on Stern‐Volmer plots, the quenching obeys a mechanism composed of both static and dynamic processes. A statistical intermolecular distance distribution between the probes was used to interpret the results in terms of static and dynamic quenching. It is shown that in the present system the dispersed complexes diffuse slightly during the excited state.
AB - The photoluminescent Ru(bpy) 2+3 complex was dispersed in a polysiloxane film containing 2,2′‐bipyridine (bpy) pendant groups. The unusually long photoluminescence lifetime of the Ru(bpy) 2+3 (1,94 μs at 25°C) and the blue‐shifted photoluminescent wavelength suggest a rigid polymer matrix. The fluorescence yield becomes lower with higher probe concentration, indicating concentration quenching. According to the analysis based on Stern‐Volmer plots, the quenching obeys a mechanism composed of both static and dynamic processes. A statistical intermolecular distance distribution between the probes was used to interpret the results in terms of static and dynamic quenching. It is shown that in the present system the dispersed complexes diffuse slightly during the excited state.
UR - http://www.scopus.com/inward/record.url?scp=84988146070&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84988146070&partnerID=8YFLogxK
U2 - 10.1002/macp.1995.021960423
DO - 10.1002/macp.1995.021960423
M3 - Article
AN - SCOPUS:84988146070
VL - 196
SP - 1241
EP - 1250
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
SN - 1022-1352
IS - 4
ER -