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. Author manuscript; available in PMC: 2014 Nov 19.
Published in final edited form as: Anal Chem. 2013 Nov 5;85(22):10.1021/ac402079e. doi: 10.1021/ac402079e

Table I.

Measured Drift Velocities and μH Values Lipid Probes at pH 4.9

Property K Measured or Calculated NBD-PS ortho- TR DHPE Para- TR DHPE
Lipid Headgroup Radius27,28,30 0.5 nm 1.0 nm 1.0 nm
VD* 3.4 nm 11 ± 1 ×10−3 7.6 ± 0.2 × 10−3 7.0 ± 0.4 × 10−3
10 nm 4.1 ± 1.3 × 10−3 6.0 ± .5 × 10−3 7.0 ± .3 × 10−3
μH# 3.4 nm Measured 0.88 ± 0.8 0.76 ± 0.2 0.70 ± 0.2
Calculated 0.87 0.77 0.77
10 nm Measured 0.33± 0.1 0.60± 0.05 0.71± .03
Calculated 0.95 0.91 0.91
*

The drift velocity, VD, values are in units of (μm/s)•(V/m)−1.

#

The electrophoretic mobility, μH, values are in units of (μm/s) •(V/m)−1 •C−1, where C is the charge in Coulombs.