In:
Applied Physics Letters, AIP Publishing, Vol. 101, No. 26 ( 2012-12-24)
Kurzfassung:
Electrical conduction through chromophore-functionalized nanotubes can be modulated by light with wavelengths expected to isomerize the chromophores. Here, we use second harmonic generation to directly measure the orientation and photoisomerization kinetics of azo-benzene chromophores on single-walled carbon nanotubes. We find a net chromophore orientation with an average chromophore tilt angle of 40° ± 3°. We show that this angle can be reduced effectively to zero with an applied corona field. Periodic illumination with unpolarized 495 nm light induces reversible trans-cis switching, enabling the extraction of switching time scales both with and without an applied electric field.
Materialart:
Online-Ressource
ISSN:
0003-6951
,
1077-3118
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2012
ZDB Id:
211245-0
ZDB Id:
1469436-0
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