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Nonlinear optical chromophores as nanoscale emitters for single-molecule spectroscopy

Article Abstract:

A class of nonlinear optical chromophores that not only are well-suited for single-molecule imaging but also offer additional beneficial properties such as significant ground-state dipole moment, moderate hyperpolarizability, and sensitivity to local environment is discussed. An overview of the photophysical properties of several members of this class of molecules as well as a mechanism to help understand the environmental sensitivity is presented.

Author: Moerner, W.E., Willets, Katherine A., Nishimura, Stefanie Y., Schuck, P. James, Twieg, Robert J.
Publisher: American Chemical Society
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2005
Optical properties, Nonlinear optics, Chromophores

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Single-molecule spectroscopy of conjugated polymers

Article Abstract:

The molecular structure, photochemistry, and device physics of conjugated polymers is investigated by single-molecule spectroscopy (SMS), using the unique ability of this technique to unravel complex spectra and dynamics. Efficient and directional electronic energy funneling is observed for conjugated polymer molecules due to highly ordered conformations.

Author: Barbara, Paul F., Gesquiere, Andre J., Young Jong Lee, So-Jung Park
Publisher: American Chemical Society
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2005
Molecular dynamics, Spectra, Photochemistry, Light emitting polymers

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Alternating-laser excitation of single molecules

Article Abstract:

A new family of single-molecule fluorescence methods that uses alternating-laser excitation (ALEX) of diffusing or immobilized bio-molecules to study their structure, interactions, and dynamics is described. Single-molecule fluorescence spectroscopy addresses biological mechanisms and enables ultrasensitive diagnostics.

Author: Laurence, Ted A., Xiangxu Kong, Weiss, Shimon, Kapanidis, Achillefs N., Lee, Nam Ki, Margeat, Emmanuel
Publisher: American Chemical Society
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2005
Laser beams, Laser diffraction

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Subjects list: Research, Usage, Fluorescence spectroscopy, Analysis, Molecular structure
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