Physics Commons^™

Heterogeneous Rotational Diffusion Of A Fluorescent Probe In Lipid Monolayers, Christina M. Othon

Christina M Othon

The rotational correlation time of the lipid probe 1-palmitoyl-2-{6-[(7-nitro-2-1,3-benzoxadiazol-4-yl)amino]hexanoyl}-sn-glycero-3-phosphocholine (NBD-PC) is measured using fluorescence anisotropy for two lipid species. We measure the rotational diffusion in a monolayer of 1,2-Didecanoyl-sn-glycero-3-phosphocholine (DPPC) which displays a phase transition at room temperature from the liquid expanded to the liquid-condensed phase. The constant rotational diffusion of the probe throughout the phase transition reflects the measurement of dynamics in only the liquid-expanded phase. We contrast the dynamic changes during this phase coexistence to the continuous density increase observed in 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) at room temperature. We observe a non-exponential decay of the probe diffusion consistent with heterogeneity …

Pubspectra To Do Data, George Mcnamara

George McNamara

PubSpectra raw data that I had in my "to do" folder to add to the PubSpectra data set but never did.

PubSpectra has over 2000 spectra in it (last updated 2006) in Excel "big file" format - the XLSX file inside the zip file at

http://works.bepress.com/gmcnamara/9/

Anyone is welcome to add and organize new data yourselves. I used Un-Scan-It from Silk Scientific (www.silkscientific.com).

More importantly, I strongly adopting my PubSpectra format of 1 nm wavelength intervals, with the row number corresponding to nm. For example, 400 nm data appears in row 400.

Much of Urse Utzinger's "Spectra Arizona" data,

http://www.spectra.arizona.edu/ …