Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Douglas S. English"'
Autor:
Qing Liu, Daniel C. Stein, Philip DeShong, Matthew T. Hurley, Zifan Wang, Amanda Mahle, Daniel Rabin, Douglas S. English, Michael R. Zachariah
Publikováno v:
Advanced Functional Materials. 23:3335-3343
Fluorescent silica nanoparticles (FSNs) are prepared by incorporating dye into a mesoporous silica nanoparticle (MSN) synthesis procedure. FSNs containing sulforhodamine B, hydrophobically modifi ed sulforhodamine B, and Casdade Blue hydrazide are ma
Autor:
Douglas S. English, Luis A. Campos, Ravishankar Ramanathan, Jianwei Liu, Victor Muñoz, Xiang Wang
Publikováno v:
Nature Methods. 8:143-146
Time resolution of current single-molecule fluorescence techniques is limited to milliseconds because of dye blinking and bleaching. Here we introduce a photoprotection strategy that affords microsecond resolution by combining efficient triplet quenc
Publikováno v:
The Journal of Physical Chemistry C. 112:14229-14232
Single dot spectroscopy is performed on two-color CdSe/ZnS/CdSe core/barrier/shell nanostructures. Unlike quantum dots cores, these systems have two phases with which to emit and ultimately examine for blinking analysis. These particles are brighter
Publikováno v:
The Journal of Physical Chemistry C. 111:14257-14265
We report results from wavelength-resolved fluorescence lifetime measurements of azobenzene-modified poly-(p-phenylenevinylene) (PPV). The introduction of an azobenzene side chain enables reversible phototriggered modulation of the PPV emission. Inte
Autor:
Shih-Huang Tung, Alice M. Kemme, Xiang Wang, Emily J. Danoff, Douglas S. English, Nikolai A. Sinkov, Srinivasa R. Raghavan
Publikováno v:
Langmuir. 23:8965-8971
We demonstrate the unique ability of catanionic vesicles, formed by mixing single-tailed cationic and anionic surfactants, to capture ionic solutes with remarkable efficiency. In an initial study (Wang, X.; Danoff, E. J.; Sinkov, N. A.; Lee, J.-H.; R
Autor:
Srinivasa R. Raghavan, Douglas S. English, Xiang Wang, Nikolai A. Sinkov, Emily J. Danoff, Jae-Ho Lee
Publikováno v:
Langmuir. 22:6461-6464
Vesicles formed from the cationic surfactant, cetyltrimethylammonium tosylate (CTAT) and the anionic surfactant, sodium dodecylbenzenesulfonate (SDBS), were used to sequester the anionic dye carboxyfluorescein. Carboxyfluorescein was efficiently sequ
Publikováno v:
Organicbiomolecular chemistry. 13(2)
An ammonium picket porphyrin that targets bacterial membranes has been prepared and shown to bind to phosphatidylglycerol (PG), a bacterial lipid, when the lipid was in solution, contained within synthetic membrane vesicles, or when in Gram-negative
Publikováno v:
Biophysical Journal. 89(4):2588-2596
The Escherichia coli lactose repressor protein (LacI) provides a classic model for understanding protein-induced DNA looping. LacI has a C-terminal four-helix bundle tetramerization domain that may act as a flexible hinge. In previous work, several D
Publikováno v:
Analytical Chemistry. 77:2252-2258
A simple method for fabricating nanoscale channels based on thermomechanical deformation of rigid polymer substrates is demonstrated. Polycarbonate preforms containing microchannels with cross-sectional dimensions on the order of tens of micrometers
Publikováno v:
Nano Letters. 4:233-239
Fluorescence microscopy techniques are used to investigate diffusion and wetting at the interior surface of template-synthesized silica nanotubes. Imaging of individual nanotubes reveals that complete modification of the nanotube interiors with hydro