Use this resource - and many more! - in your textbook!
AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.
All-Optical Sensing of the Components of the Internal Local Electric Field in Proteins
2012 / IEEE
This item was taken from the IEEE Periodical ' All-Optical Sensing of the Components of the Internal Local Electric Field in Proteins ' Here, we present a new all-optical method of interrogation of the internal electric field vector inside proteins. The method is based on experimental evaluation of the permanent dipole moment change upon excitation and the pure electronic transition frequency of a fluorophore embedded in a protein matrix. The permanent dipole moment change can be obtained from two-photon absorption measurements. In addition, permanent dipole moment change, tensor of polarizability change, and transition frequency for the free chromophore should be calculated quantum-mechanically. This allows obtaining the components of the electric field by considering the second-order Stark shift. We use the fluorescent protein mCherry as an example to demonstrate the applicability of the method.
Electric Field Effects
Fluorescent Protein Mcherry
Internal Local Electric Field
Internal Electric Field Vector
Permanent Dipole Moment
Pure Electronic Transition Frequency
Two-photon Absorption Measurements
Second-order Stark Shift
Ultrafast Nonlinear Processes
Spectroscopy Of Biological Materials
Photonics And Electrooptics
Engineered Materials, Dielectrics And Plasmas