Abstract

Light quenching is a unique opportunity to increase the resolution in fluorescence light microscopy. The resolution of a fluorescence light microscopy can be increased by quenching the excited molecules at the outer regions of the focused light spot, as has been shown in a theoretical study. For the practical development of such a microscopy the light quenching properties and their study are of essential interest. The goal of the present studies is to define and measure the amount of light quenching depending on the wavelength and intensity of the beams used. It will be of utmost interest to find dyes working in the IR regime since these dyes can easily be exploited in combination with the easy-to-use Titanium-Sapphire lasers. It is also interesting to study the lifetimes of the dyes in order to optimize the setup for maximum light quenching.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR008119-08
Application #
6315376
Study Section
Project Start
2000-04-01
Project End
2001-03-31
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
8
Fiscal Year
2000
Total Cost
$28,294
Indirect Cost

  Institution

Name
University of Maryland Baltimore
Department
Type
DUNS #
003255213
City
Baltimore
State
MD
Country
United States
Zip Code
21201

  Publications

Piao, Wenji; Shirey, Kari Ann; Ru, Lisa W et al. (2015) A Decoy Peptide that Disrupts TIRAP Recruitment to TLRs Is Protective in a Murine Model of Influenza. Cell Rep 11:1941-52
Hartman, Kira G; McKnight, Laura E; Liriano, Melissa A et al. (2013) The evolution of S100B inhibitors for the treatment of malignant melanoma. Future Med Chem 5:97-109
Fu, Yi; Zhang, Jian; Lakowicz, Joseph R (2009) Highly efficient detection of single fluorophores in blood serum samples with high autofluorescence. Photochem Photobiol 85:646-51
Zhang, Jian; Badugu, Ramachandram; Lakowicz, Joseph R (2008) Fluorescence Quenching of CdTe Nanocrystals by Bound Gold Nanoparticles in Aqueous Solution. Plasmonics 3:3-11
Ray, Krishanu; Badugu, Ramachandram; Lakowicz, Joseph R (2007) Polyelectrolyte Layer-by-Layer Assembly To Control the Distance between Fluorophores and Plasmonic Nanostructures. Chem Mater 19:5902-5909
Matveeva, Evgenia G; Gryczynski, Ignacy; Barnett, Anne et al. (2007) Metal particle-enhanced fluorescent immunoassays on metal mirrors. Anal Biochem 363:239-45
Zhang, Jian; Fu, Yi; Chowdhury, Mustafa H et al. (2007) Metal-enhanced single-molecule fluorescence on silver particle monomer and dimer: coupling effect between metal particles. Nano Lett 7:2101-7
Zhang, Jian; Fu, Yi; Chowdhury, Mustafa H et al. (2007) Single-Molecule Studies on Fluorescently Labeled Silver Particles: Effects of Particle Size. J Phys Chem C Nanomater Interfaces 112:18
Zhang, Jian; Fu, Yi; Lakowicz, Joseph R (2007) Single cell fluorescence imaging using metal plasmon-coupled probe. Bioconjug Chem 18:800-5
Zhang, Jian; Fu, Yi; Lakowicz, Joseph R (2007) Emission Behavior of Fluorescently Labeled Silver Nanoshell: Enhanced Self-Quenching by Metal Nanostructure. J Phys Chem C Nanomater Interfaces 111:1955-1961

Showing the most recent 10 out of 44 publications