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- Sandén, TorKTH,Experimentell biomolekylär fysik,Experimental Biomolecular Physics (author)
Transient State Imaging for Microenvironmental Monitoring by Laser Scanning Microscopy
- Article/chapterEnglish2008
Publisher, publication year, extent ...
- 2008-11-14
- Washington, DC :American Chemical Society,2008
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-10236
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10236URI
- https://doi.org/10.1021/ac8018735DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- QC 20100805
- Photoinduced transient dark states are exhibited by practically all common fluorophores. These relatively long-lived states are very sensitive to the local environment and thus highly attractive for microenvironmental imaging purposes. However, because of methodological constraints, their sensitivity has to date been very sparsely exploited. Here, a concept based on spatio-temporal modulation of the excitation intensity is presented that can image these states via their photodynamic fingerprints. With the use of a standard laser scanning microscope, it unites the outstanding environmental sensitivity of the transient state parameters with the high sensitivity of the fluorescence readout and is easily implemented. For demonstration, triplet state images of liposomes with different internal environments were generated. These images provide an example of bow local environmental differences can be resolved, which are not clearly distinguishable via other fluorescence parameters. Having minor instrumental and sample constraints the concept can be foreseen to provide several new, useful, and independent fluorescence-based parameters in biomolecular imaging.
Subject headings and genre
- NATURVETENSKAP Kemi Analytisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Analytical Chemistry hsv//eng
- fluorescence correlation spectroscopy; absorption-spectroscopy; phosphorescence; dynamics
- Analytical chemistry
- Analytisk kemi
Added entries (persons, corporate bodies, meetings, titles ...)
- Persson, GustavKTH,Experimentell biomolekylär fysik,Experimental Biomolecular Physics(Swepub:kth)u1py9fjh (author)
- Widengren, JerkerKTH,Experimentell biomolekylär fysik,Experimental Biomolecular Physics(Swepub:kth)u1i3g09c (author)
- KTHExperimentell biomolekylär fysik (creator_code:org_t)
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- In:Analytical ChemistryWashington, DC : American Chemical Society80:24, s. 9589-95960003-27001520-6882
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