NDLI: Counting Single Rhodamine 6G Dye Molecules in Organosilicate Nanoparticles

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Counting Single Rhodamine 6G Dye Molecules in Organosilicate Nanoparticles

Content Provider	PubMed Central
Author	Trenkmann, I. Bok, S. Korampally, V. Gangopadhyay, S. Graaf, H. Von, Borczyskowski C.
Copyright Year	2012
Abstract	Rhodamine 6G (R6G) dye molecules have been embedded into organosilicate nanoparticles to improve thermal and chemical stability of these marker molecules. We demonstrate that the well-established method of optical single-particle microscopy can be used to determine the number of dye molecules per nanoparticle in such hybrid materials. Analysing the fluorescence intensity of R6G in single nanoparticles, we obtain an average number of 1.3 – 1.7 dye molecules per nanoparticle as compared to 1 R6G per particle obtained from ensemble experiments. The blinking behaviour of embedded R6G can be described by a power law with an exponent α on/off = − 1.7. Ensemble measurements complete the optical characterization of the nanoparticles, which reveals no pronounced R6G aggregate formation.
Related Links	http://dx.doi.org/10.1016/j.chemphys.2012.02.014
Ending Page	46
Page Count	6
Starting Page	41
File Format	PDF
ISSN	03010104
Journal	Chemical physics
Volume Number	406
Language	English
Publisher Date	2012-10-01
Access Restriction	Open
Subject Keyword	Physical and Theoretical Chemistry Physics and Astronomy(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry

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