Self-assembly and photomechanical switching of an azobenzene derivative on GaAs(110): Scanning tunneling microscopy study

Ivan V. Pechenezhskiy; Jongweon Cho; Giang D. Nguyen; Luis Berbil-Bautista; Brandon L. Giles; Daniel A. Poulsen; Jean M.J. Fréchet; Michael F. Crommie

doi:10.1021/jp209835n

Self-assembly and photomechanical switching of an azobenzene derivative on GaAs(110): Scanning tunneling microscopy study

Ivan V. Pechenezhskiy, Jongweon Cho, Giang D. Nguyen, Luis Berbil-Bautista, Brandon L. Giles, Daniel A. Poulsen, Jean M.J. Fréchet, Michael F. Crommie^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Self-assembly and light-induced mechanical switching of azobenzene derivatives deposited on GaAs(110) were explored at the single molecule level using scanning tunneling microscopy (STM). 3,3′,5,5′-Tetra-tert- butylazobenzene (TTB-AB) molecules in the trans isomer configuration were found to form well-ordered islands on GaAs(110). After exposure to ultraviolet (UV) light, the TTB-AB molecules exhibited conformational changes attributed to trans to cis photoisomerization. Photoisomerization of TTB-AB/GaAs is observed to occur preferentially in one-dimensional (1D) stripes. This 1D cascade behavior differs significantly from optically induced switching behavior observed when TTB-AB molecules are placed on a gold surface.

Original language	English (US)
Pages (from-to)	1052-1055
Number of pages	4
Journal	JOURNAL OF PHYSICAL CHEMISTRY C
Volume	116
Issue number	1
DOIs	https://doi.org/10.1021/jp209835n
State	Published - Jan 12 2012

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Surfaces, Coatings and Films
Physical and Theoretical Chemistry

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title = "Self-assembly and photomechanical switching of an azobenzene derivative on GaAs(110): Scanning tunneling microscopy study",

abstract = "Self-assembly and light-induced mechanical switching of azobenzene derivatives deposited on GaAs(110) were explored at the single molecule level using scanning tunneling microscopy (STM). 3,3′,5,5′-Tetra-tert- butylazobenzene (TTB-AB) molecules in the trans isomer configuration were found to form well-ordered islands on GaAs(110). After exposure to ultraviolet (UV) light, the TTB-AB molecules exhibited conformational changes attributed to trans to cis photoisomerization. Photoisomerization of TTB-AB/GaAs is observed to occur preferentially in one-dimensional (1D) stripes. This 1D cascade behavior differs significantly from optically induced switching behavior observed when TTB-AB molecules are placed on a gold surface.",

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T1 - Self-assembly and photomechanical switching of an azobenzene derivative on GaAs(110)

T2 - Scanning tunneling microscopy study

AU - Pechenezhskiy, Ivan V.

AU - Cho, Jongweon

AU - Nguyen, Giang D.

AU - Berbil-Bautista, Luis

AU - Giles, Brandon L.

AU - Poulsen, Daniel A.

AU - Fréchet, Jean M.J.

AU - Crommie, Michael F.

PY - 2012/1/12

Y1 - 2012/1/12

N2 - Self-assembly and light-induced mechanical switching of azobenzene derivatives deposited on GaAs(110) were explored at the single molecule level using scanning tunneling microscopy (STM). 3,3′,5,5′-Tetra-tert- butylazobenzene (TTB-AB) molecules in the trans isomer configuration were found to form well-ordered islands on GaAs(110). After exposure to ultraviolet (UV) light, the TTB-AB molecules exhibited conformational changes attributed to trans to cis photoisomerization. Photoisomerization of TTB-AB/GaAs is observed to occur preferentially in one-dimensional (1D) stripes. This 1D cascade behavior differs significantly from optically induced switching behavior observed when TTB-AB molecules are placed on a gold surface.

AB - Self-assembly and light-induced mechanical switching of azobenzene derivatives deposited on GaAs(110) were explored at the single molecule level using scanning tunneling microscopy (STM). 3,3′,5,5′-Tetra-tert- butylazobenzene (TTB-AB) molecules in the trans isomer configuration were found to form well-ordered islands on GaAs(110). After exposure to ultraviolet (UV) light, the TTB-AB molecules exhibited conformational changes attributed to trans to cis photoisomerization. Photoisomerization of TTB-AB/GaAs is observed to occur preferentially in one-dimensional (1D) stripes. This 1D cascade behavior differs significantly from optically induced switching behavior observed when TTB-AB molecules are placed on a gold surface.

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Self-assembly and photomechanical switching of an azobenzene derivative on GaAs(110): Scanning tunneling microscopy study

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