Some Aspects of Excited-State Probe Emission Spectroscopy for Structure and Dynamics of Model and Biological Membranes

1988 ◽  
pp. 491-567 ◽  
Author(s):  
R. E. Dale
Keyword(s):  
Excited State ◽  
Emission Spectroscopy ◽  
Biological Membranes ◽  
Structure And Dynamics

scholarly journals Structure and Dynamics of Glycosphingolipids in Lipid Bilayers: Insights from Molecular Dynamics Simulations

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Ronak Y. Patel ◽  
Petety V. Balaji
Keyword(s):  
Molecular Dynamics ◽  
Lipid Bilayers ◽  
Membrane Structure ◽  
Lipid Membrane ◽  
Biological Membranes ◽  
Md Simulations ◽  
Atomic Level ◽  
Structure And Dynamics ◽  
Hydrogen Bonding Interactions ◽  
Dynamics Simulations

Glycolipids are important constituents of biological membranes, and understanding their structure and dynamics in lipid bilayers provides insights into their physiological and pathological roles. Experimental techniques have provided details into their behavior at model and biological membranes; however, computer simulations are needed to gain atomic level insights. This paper summarizes the insights obtained from MD simulations into the conformational and orientational dynamics of glycosphingolipids and their exposure, hydration, and hydrogen-bonding interactions in membrane environment. The organization of glycosphingolipids in raft-like membranes and their modulation of lipid membrane structure are also reviewed.

scholarly journals Dynamic solvatochromism in solvent mixtures

2001 ◽  
Vol 73 (3) ◽  
pp. 405-409 ◽  
Author(s):  
Diana E. Wetzler ◽  
Carlos Chesta ◽  
Roberto Fernández-Prini ◽  
Pedro F. Aramendía
Keyword(s):  
Excited State ◽  
Ground State ◽  
Emission Spectroscopy ◽  
Characteristic Time ◽  
Polar Solvent ◽  
Emission Spectra ◽  
Spectral Shift ◽  
Solvent Mixtures ◽  
Time Resolved ◽  
Different Temperatures

Solvatochromism and thermochromism of 4-aminophthalimide and 4-amino-N-methylphthalimide were studied by absorption and steady-state and time-resolved emission spectroscopy in solvent mixtures of toluene­ethanol and toluene­acetonitrile at different temperatures. Emission spectra shift to the red upon addition of a polar solvent (PS) to toluene. Solvent mixtures show a much greater thermochromic shift to the blue in emission than the neat solvents. This is explained by the decrease in temperature of the exothermic association of the polar solvent to the excited state. Emission spectra are time dependent in solvent mixtures in the ns timescale. The time evolution of this emission is interpreted on the basis of the different solvation of the ground state and the emitting excited state. Stern­Volmer plots are obtained for the dependence of the spectral-shift characteristic time with [PS].

scholarly journals Emission spectroscopy of a ruthenium(ii) polypyridyl complex adsorbed on calcium niobate lamellar solids and nanosheets

2015 ◽  
Vol 17 (27) ◽  
pp. 17962-17966 ◽  
Author(s):  
Kazuhiko Maeda ◽  
Takayoshi Oshima ◽  
Osamu Ishitani
Keyword(s):  
Excited State ◽  
Conduction Band ◽  
Morphological Feature ◽  
Emission Spectroscopy ◽  
Preparation Method ◽  
Electron Injection ◽  
Polypyridyl Complex ◽  
Calcium Niobate

Electron injection from the excited state of a Ru(ii) polypyridyl complex occurs not only in the conduction band of HCa2Nb3O10 but also surface traps whose density is strongly dependent on both the morphological feature and the preparation method of HCa2Nb3O10.

Sign in / Sign up

Export Citation Format

Share Document