Probing the relative orientation of molecules bound to DNA through controlled interference using second-harmonic generation

Benjamin Doughty, Yi Rao, Samuel W. Kazer, Sheldon J.J. Kwok, Nicholas J. Turro, Kenneth B. Eisenthal

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A method is described in which the interference of radiated secondharmonic electric fields generated by a pair of oriented molecules intercalated into double-stranded DNA is controlled and measured. The results show that the relative molecular orientation of the two molecules significantly changes the magnitude of the observed second-harmonic generation intensity, which is described by a simple model that accounts for the interferences of the radiated fields. The technique presented shows promise for future experiments investigating structural changes induced bythe formation of a DNA-biomolecule complex.

Original languageEnglish
Pages (from-to)5756-5758
Number of pages3
JournalProceedings of the National Academy of Sciences of the United States of America
Volume110
Issue number15
DOIs
StatePublished - Apr 9 2013
Externally publishedYes

Keywords

  • Alignment
  • Daunorubicin
  • Equilibrium binding
  • Nonlinear spectroscopy
  • Phase

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