TY - JOUR
T1 - Thiol-linked anthraquinone anthryl acetylene molecule
T2 - Synthesis, self-assembly, and photoelectrochemical properties
AU - Ma, Hong
AU - Kang, Mun-Sik
AU - Xu, Qing-Min
AU - Kim, Kyoung-Soo
AU - Jen, Alex K.-Y.
PY - 2005/5/31
Y1 - 2005/5/31
N2 - A novel self-assembling molecule with coplanar anthraquinonyl and anthryl moieties linked by an acetylenic unit has been designed and synthesized as an electron acceptor for efficient photocurrent generation. The high-resolution scanning tunneling microscopy (STM) images showed that the self-assembled monolayer (SAM) of this molecule forms highly ordered two-dimensional (2D) arrays on Au(111) with an oblique lattice and graphite-like stacking at room temperature. The electrochemical study of this molecule and its SAM on Au showed reversible characteristics. The SAMs generated by co-assembling this acceptor with an oligo(pyrrolethiophene) donor show very promising photoelectrochemical properties. The amount of photocurrent generated (up to 1425 nA/cm 2, 23.1% of quantum yield) under the illumination of 360 nm light is comparable to that obtained from using a C 60-based molecule as the electron acceptor (1700 nA/cm 2). This result demonstrates the feasibility of using anthraquinone-anthrylacetylene-thiol linked molecule as an efficient electron acceptor for constructing a monochromatic light-to-current molecular converter. © 2005 American Chemical Society.
AB - A novel self-assembling molecule with coplanar anthraquinonyl and anthryl moieties linked by an acetylenic unit has been designed and synthesized as an electron acceptor for efficient photocurrent generation. The high-resolution scanning tunneling microscopy (STM) images showed that the self-assembled monolayer (SAM) of this molecule forms highly ordered two-dimensional (2D) arrays on Au(111) with an oblique lattice and graphite-like stacking at room temperature. The electrochemical study of this molecule and its SAM on Au showed reversible characteristics. The SAMs generated by co-assembling this acceptor with an oligo(pyrrolethiophene) donor show very promising photoelectrochemical properties. The amount of photocurrent generated (up to 1425 nA/cm 2, 23.1% of quantum yield) under the illumination of 360 nm light is comparable to that obtained from using a C 60-based molecule as the electron acceptor (1700 nA/cm 2). This result demonstrates the feasibility of using anthraquinone-anthrylacetylene-thiol linked molecule as an efficient electron acceptor for constructing a monochromatic light-to-current molecular converter. © 2005 American Chemical Society.
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U2 - 10.1021/cm050243w
DO - 10.1021/cm050243w
M3 - RGC 21 - Publication in refereed journal
SN - 0897-4756
VL - 17
SP - 2896
EP - 2903
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 11
ER -