搜索结果: 16-30 共查到“知识库 光化学”相关记录650条 . 查询时间(4.481 秒)
Tension-Induced Pore Formation and Leakage in Adhering Vesicles
Tension-Induced Pore Adhering Vesicles
2016/5/24
The influence of inclusion-induced tension on pore formation is studied theoretically and experimentally. It is shown that fluorescently labeled lipids can enhance pore formation and induce leakage of...
Variable Incidence Angle Fluorescence Interference Contrast Microscopy for Z-Imaging Single Objects
Incidence Angle Fluorescence Microscopy Z-Imaging Single Objects
2016/5/24
Surface-generated structured illumination microscopies interrogate the position of fluorescently labeled objects near surfaces with nanometer resolution along the z axis. However, these techniques are...
Protonation,Photobleaching,and Photoactivation of Yellow Fluorescent Protein (YFP 10C):A Unifying Mechanism
Protonation Photobleaching Photoactivation Yellow Fluorescent Protein Unifying Mechanism
2016/5/24
Yellow fluorescent protein (YFP 10C) is widely used as a probe in biology, but its complex photochemistry gives rise to unusual behavior that requires fuller definition. Here we characterize the kinet...
Vesicle Adsorption and Lipid Bilayer Formation on Glass Studies by Atomic Force Microscopy
crystal structure single crystal X-ray diffraction rare earth metal transition metal silicon
2016/5/24
The adsorption of phosphatidylcholine (PC) vesicles (30, 50, and 100 nm nominal diameters) and of dye-labeled PC vesicles (labeled with 6% Texas Red fluorophore (TR) and encapsulated carboxy fluoresce...
High refractive index substrates for fluorescence microscopy of biological interfaces with high z contrast
Oxides Niobium Silicon Dioxide Xanthenes Lipid Bilayers Phosphatidylcholines Phosphatidylethanolamines Fluorescent Dyes Microscopy, Fluorescence Image Enhancement
2016/5/23
Total internal reflection fluorescence microscopy is widely used to confine the excitation of a complex fluorescent sample very close to the material on which it is supported. By working with high ref...
A liquid nitrogen immersion cryostat for optical measurements
liquid nitrogen immersion cryostat optical measurements
2016/5/23
A liquid nitrogen immersion cryostat has been developed for optical measurements. Liquid nitrogen in the sample chamber is kept free of bubbles and schlieren by the use of a cooling jacket of sacrific...
Studies of the Electronic Structure of Metallocene-based Second-order Non-linear Optical Dyes
Electronic Structure Metallocene Second-order Non linear Optical Dyes
2016/5/23
This paper describes a simple orbital picture for understanding the optical transitions and the second-order nonlinear optical response of metallocene-based chromophores of the form metallocene-(pi-br...
Characterization of the Light Harvesting Antennas of Photosynthetic Purple Bacteria by Stark Spectroscopy:I.LH1 Antenna Complex and the B820 Subunit from Rhodospirillum rubrum
ABCD rule accessory nipples acral acrolentiginous actinic keratosis alopecia amelonotic angiokeratoma angioma arborizing blood vessels
2016/5/23
We present low-temperature Stark measurements on the core light-harvesting complex 1 (LH1) of purple bacteria and the B820 subunit derived from LH1, which is a protein bound Bchl a dimer. It was found...
Excited State Energy Transfer Pathways in Photosynthetic Reaction Centers.2.Heterodimer Special Pair
Excited State Energy Photosynthetic Reaction Centers Heterodimer Special Pair
2016/5/23
Ultrafast singlet excited state energy transfer occurs from the monomeric chromophores to the primary electron donor or special pair in photosynthetic reaction centers. The mechanism of this process h...
Large Molecular Third-Order Optical Nonlinearities in Polarized Carotenoids
Carotenoids Molecular Structure Optics and Photonics Photochemistry Spectrum Analysis
2016/5/23
Garito and co-workers have suggested a mechanism to dramatically increase the second hyperpolarizability, gamma, in linear pi-electron-conjugated molecules. Polarization is introduced that leads to a ...
Micropatterning Fluid Lipid Bilayers on Solid Supports
Aluminum Oxide Xanthenes Lipid Bilayers Phosphatidylcholines Fluorescent Dyes Electricity Diffusion Membrane Fluidity Pattern Recognition, Automated Physicochemical Phenomena
2016/5/23
Lithographically patterned grids of photoresist, aluminum oxide, or gold on oxidized silicon substrates were used to partition supported lipid bilayers into micrometer-scale arrays of isolated fluid m...
Two-Photon Excitation of 4'-Hydroxymethyl-4,5',8-Trimethylpsoralen
Aluminum Oxide Lasers Rhodamines Spectrophotometry, Atomic Trioxsalen) Trioxsalen
2016/5/23
Psoralens are a class of pharmaceutical agents commonly used to treat several cutaneous disorders. When irradiated with a mode-locked titanium: sapphire (Ti:sapphire) laser tuned to 730 nm, an aqueous...
Stark Effect Spectroscopy of Tryptophan
Biophysical Phenomena Biophysics Electrochemistry Fluorescence Polarization Melitten Models,Chemical Photochemistry Solvents Spectrometry, Fluorescence Spectrophotometry Tryptophan Tryptophan
2016/5/23
The change in permanent dipole moment (magnitude of delta mu) for the transition from the 1La state to the ground state of tryptophan is the key photophysical parameter for the interpretation of trypt...
Vibrational Stark Effect Spectroscopy.
Oscillations in the Spontaneous Fluorescence from the Photosynthetic Reaction Centers
inorganic,organic,physical and analytical chemistry basic biological sciences solar energy photosynthetic reaction centers fluorescence chlorophyll electron transfer oscillations photosynthetic bacteria stimulated emission
2016/5/23
The spontaneous fluorescence from the special pair primary electron donor in bacterial photosynthetic reaction centers has been measured at low temperature using fluorescence up-conversion following e...