Journal
CHEMICAL PHYSICS LETTERS
Volume 452, Issue 1-3, Pages 162-167Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2007.12.047
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Funding
- NCRR NIH HHS [P41 RR008119] Funding Source: Medline
- NHGRI NIH HHS [R01 HG002655-03, R01 HG002655-04A1, R01 HG002655-01, R01 HG002655-05, R01 HG002655, R01 HG002655-02, R01 HG002655-06] Funding Source: Medline
- NIBIB NIH HHS [R01 EB006521, R01 EB000682-02, R01 EB000682-03, R01 EB006521-01A1, R01 EB000682-01, R01 EB006521-02, R01 EB000682, R01 EB000682-05, R01 EB006521-03, R01 EB000682-04] Funding Source: Medline
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We report that self-assembled monolayers of colloidal silver nanoparticles can increase the intensity of the surface plasmon-coupled emission (SPCE) signal from sulforhodamine 101 (S101). The S101 was spin coated on a glass slide coated with a layer of continuous silver, and a silica layer upon which the nanoparticle layer was self-assembled. Of the various colloid sizes studied, the 40 nm colloids showed both the highest enhancements in the SPCE signal and the largest extent of plasmon coupling, defined as the ratio of SPCE to Free Space signal. Our findings reveal a new technique that can be potentially employed to increase the sensitivity of SPCE applications. (c) 2007 Elsevier B.V. All rights reserved.
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