Ultraviolet, Circular Dichroism, Fluorescence, and Circularly Polarized Luminescence Spectra of Regioregular Poly-[3-((S)-2-Methylbutyl)-Thiophene] in Solution.
Academic Article
Publication Date:
2012
Abstract:
Ultraviolet (UV), Circular Dichroism(CD), Fluorescence, and Circularly Polarized
Luminescence (CPL) spectra were recorded for mixed chloroform/methanol and chloroform/
butanol solutions of regioregular poly[3-((S)-2-methylbutyl)-thiophene]. An evaluation of the chiral
and nonchiral components in solution is proposed on the basis of the UV and CD spectra. The
fluorescence and CPL spectra are observed in a wavelength range where some UV and CD activity
still appears. For this reason, the observed CPL features are strongly influenced by CD. A general
procedure for evaluating true CPL spectra is proposed, when absorption and emission coexist.
Luminescence (CPL) spectra were recorded for mixed chloroform/methanol and chloroform/
butanol solutions of regioregular poly[3-((S)-2-methylbutyl)-thiophene]. An evaluation of the chiral
and nonchiral components in solution is proposed on the basis of the UV and CD spectra. The
fluorescence and CPL spectra are observed in a wavelength range where some UV and CD activity
still appears. For this reason, the observed CPL features are strongly influenced by CD. A general
procedure for evaluating true CPL spectra is proposed, when absorption and emission coexist.
CRIS type:
1.1 Articolo in rivista
List of contributors:
Castiglioni, Ettore; Abbate, Sergio; Lebon, France; Longhi, Giovanna
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