Patterned electroactive surfaces
1
Patterned electroactive surfaces 3x10 -6 2 1 0 -1 -2 -3 i/A 0.7 0.6 0.5 0.4 0.3 V vs Ag/AgCl(1M KCl) OH OH O O 2H + + 2e - + N B OMe M eO N B O O + + H OMe M eO H R R strong fluorescence w eak fluorescence R = H, F, C l, M e, O M e, C N , N O 2 , O H 1 R 2 3 4 5 6 7 8 9 [R] [O] 200 nm (a) 1.5 1.0 0.5 0.0 height (n 120 80 40 0 distance (nm) profile1 1.0 nm 2.0 1.5 1.0 0.5 0.0 height (n 120 80 40 0 distance (nm) 1.1 nm profile 2 (b) Nanostructures with tunable chemical functionality AFM image of aminoundecanethiol (squares) nanografted in a matrix of octadecanethiol. Spatial resolution as good as 10 nm has been achieved. Cyclic voltammogram of ferrocene thiol SAM. Upon oxidation, the SAM becomes positively charged. However, the ferrocenium groups undergo partial decomposition within 10 min. Reversible boronate formation between 1 and substituted catechols in MeOH. Upon binding the fluorescence intensity of 1 is reduced. The reversible oxidation of catechol to o-benzoquinone is also shown. (Lu et al., Chemical Communications 2009, 5491-5495.) AFM image of disc like GaSe nanoparticles deposited on Au(111). The particles are oriented and their aggregate states can be controlled by the surface Next step: integration
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Dynamic Surfaces and Directional Nanoscale Motion Tao Ye, School of Natural Sciences, University of California Merced. AFM image of aminoundecanethiol (squares) nanografted in a matrix of octadecanethiol. Spatial resolution as good as 10 nm has been achieved. - PowerPoint PPT Presentation
Transcript of Patterned electroactive surfaces
Patterned electroactive surfaces
3x10-6
2
1
0
-1
-2
-3
i/A
0. 70. 60. 50. 40. 3V vs Ag/ AgCl (1M KCl )
OH
OH
O
O 2H+ + 2e- +
N
BOMeMeO
N
BO O
+
+
H
OMe
MeOH
R
R
strong fluorescenceweak fluorescence
R = H, F, Cl, Me, OMe, CN, NO2, OH
1
R
2 3 4 5 6 7 8 9
[R] [O]
200 nm
(a)1.51.00.50.0he
ight
(nm
)
12080400distance (nm)
profile1
1.0 nm
2.01.51.00.50.0
heig
ht (
nm)
12080400distance (nm)
1.1 nm
profile 2
(b)
(c)
Nanostructures with tunable chemical functionality
AFM image of aminoundecanethiol (squares) nanografted in a matrix of octadecanethiol. Spatial resolution as good as 10 nm has been achieved.
Cyclic voltammogram of ferrocene thiol SAM. Upon oxidation, the SAM becomes positively charged. However, the ferrocenium groups undergo partial decomposition within 10 min.
Reversible boronate formation between 1 and substituted catechols in MeOH. Upon binding the fluorescence intensity of 1 is reduced. The reversible oxidation of catechol to o-benzoquinone is also shown. (Lu et al., Chemical Communications 2009, 5491-5495.)
AFM image of disc like GaSe nanoparticles deposited on Au(111). The particles are oriented and their aggregate states can be controlled by the surface ligands. Shao et al.,submitted.
Next step: integration
