Redox-induced orientation changes of self-assembled monolayers(SAMs) of 11-ferrocenylundecanethiol(FcC11SH) were studied by the flow-injection electrochemical surface plasmon resonance(FI-EC-SPR).Results indicated that there existed two mechanisms concerning the redox-induced structure change of the self-assembled monolayer of ferrocenylalkanethiols:the electrostatic repulsion between the positively charged surface and the ferricenium cation and that among the cations led to a decrease in the tilt angle of the alkanethiol chain;upon Fc oxidation,the Fc group rotated from a tilted conformation to a position where the cyclpentyldiene plane became perpendicular to the electrode.


self-assembled monolayers, ferrocenylalkanethiol, the tilt angle, Cp rings

Publication Date


Online Available Date


Revised Date


Received Date



[1]Viana A S,Jones A H,Abrantes L M,et al.Redox in-duced orientational changes in a series of short chainferrocenyl alkyl thiols self-assembled on gold(111)elec-trodes[J].Journal of Electranalytical Chemistry,2001,500:290.
[2]Ye S,Sato Y,Uosaki K.Redox-induced orientation ch-ange of a self-assembled monolayer of 11-ferrocenyl-1-undecanethiol on a gold electrode studied by in situ FT-IRRAS[J].Langmuir,1997,13:3157.
[3]Ye S,Haba T,Sato Y,et al.Coverage dependent behav-ior of redox reaction induced structure change and masstransport at an 11-ferrocenyl-1-undecanethiol self-as-sembled monolayer on a gold electrode studied by an insitu IRRAS-EQCM combined system[J].Phys ChemChem Phys,1999,1:3653.
[4]Campbell D J,Herr B R,Hulteen J C,et al.Ion-gated e-lectron transfer in self-assembled monolayer films[J].JAm Chem Soc,1996,118:10211.
[5]Yao X,Yang ML,Wang Y,et al.Study of the ferroceny-lalkanethiol self-assembled monolayers by electrochemi-cal surface plasmon resonance[J].Sensors and Actua-tors B:Chemical,2007,122:351.
[6]Wang S,Boussaad S,Wong S,et al.High-sensitivity starkspectroscopy obtained by surface plasmon resonancemeasurement[J].Anal Chem,2000,72(17):4003.
[7]Yao X,Wang J,Zhou F,et al.Quantification of redox-in-duced thickness changes of 11-ferrocenylundecanethiolself-assembled monolayers by electrochemical surfaceplasmon resonance[J].J Phys Chem B,2004,108(22):7206.
[8]Kolomenskii A A,Gershon P D,Schuessler H A.Sensi-tivity and detection limit of concentration and adsorptionmeasurements by laser-induced surface-plasmon reso-nance[J].Optical Society of America,1997,36(25):6539.
[9]Boussaad S,Pean J,Tao N J.High-resolution multiwave-length surface plasmon resonance spectroscopy for pro-bing conformational and electronic changes in redox pro-teins[J].Anal Chem,2000,72(1):222.
[10]Uosaki K,Sato Y,Kita H.Electrochemical characteris-tics of a gold electrode modified with a self-assembledmonolayer of ferrocenylalkanethiols[J].Langmuir,1991,7(7):1510.
[11]Chidsey C E D,Bertozzi C R,Putvinski TM,et al.Co-adsorption of ferrocene-terminated and unsubstitutedalkanethiols on gold:Electroactive self-assembled mon-olayer[J].J Am Chem Soc,1990,112:4301.
[12]Viana A S,Abrantes L M,Jin G,et al.Electrochemi-cal,spectroscopic and SPM evidence for the controlledformation of self-assembled monolayers and organisedmultilayers of ferrocenyl alkyl thiols on Au(111)[J].Phys Chem Chem Phys,2001,3(16):3411.
[13]Grassi J H,Georgiadis R M.Temperature-dependent re-fractive index determination from critical angle meas-urements:Implications for quantitative SPR sensing[J].Anal Chem,1999,71:4392.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.