Abstract
The preparation of 2,7-diazapyrenium films on glass, quartz and silica was described. The transmission absorption spectra confirmed the presence of 2,7-diazapyrenium chromophores, but indicate sub-monolayer surface coverages. The amount of immobilized 2,7-diazapyrenium dications increases significantly when the polysiloxane formation steps of both procedures are performed either on the surface of silica nanoparticles or in the presence of Si(OEt) 4 on glass slides. The emission intensity of the 2,7-diazapyrenium dications decreases upon association of the surface-confined fluorophores with dopamine.
| Original language | English |
|---|---|
| Pages (from-to) | 5795-5802 |
| Number of pages | 8 |
| Journal | Langmuir |
| Volume | 21 |
| Issue number | 13 |
| DOIs | |
| State | Published - Jun 21 2005 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Colloid and Surface Chemistry
Cite this
Fluorescent diazapyrenium films and their response to dopamine. / Cejas, Mabel A.; Raymo, Francisco.
In: Langmuir, Vol. 21, No. 13, 21.06.2005, p. 5795-5802.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fluorescent diazapyrenium films and their response to dopamine
AU - Cejas, Mabel A.
AU - Raymo, Francisco
PY - 2005/6/21
Y1 - 2005/6/21
N2 - The preparation of 2,7-diazapyrenium films on glass, quartz and silica was described. The transmission absorption spectra confirmed the presence of 2,7-diazapyrenium chromophores, but indicate sub-monolayer surface coverages. The amount of immobilized 2,7-diazapyrenium dications increases significantly when the polysiloxane formation steps of both procedures are performed either on the surface of silica nanoparticles or in the presence of Si(OEt) 4 on glass slides. The emission intensity of the 2,7-diazapyrenium dications decreases upon association of the surface-confined fluorophores with dopamine.
AB - The preparation of 2,7-diazapyrenium films on glass, quartz and silica was described. The transmission absorption spectra confirmed the presence of 2,7-diazapyrenium chromophores, but indicate sub-monolayer surface coverages. The amount of immobilized 2,7-diazapyrenium dications increases significantly when the polysiloxane formation steps of both procedures are performed either on the surface of silica nanoparticles or in the presence of Si(OEt) 4 on glass slides. The emission intensity of the 2,7-diazapyrenium dications decreases upon association of the surface-confined fluorophores with dopamine.
UR - http://www.scopus.com/inward/record.url?scp=21644465437&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21644465437&partnerID=8YFLogxK
U2 - 10.1021/la0502793
DO - 10.1021/la0502793
M3 - Article
C2 - 15952825
AN - SCOPUS:21644465437
VL - 21
SP - 5795
EP - 5802
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 13
ER -