Photochromic dithienylethenes characterized by in situ irradiation NMR-spectroscopy and electrochemically induced responsiveness on gold substrates

2019 ◽  
Vol 7 (45) ◽  
pp. 14088-14097
Author(s):  
Jonas von Irmer ◽  
Florian Frieß ◽  
Dominik Herold ◽  
Jonas Kind ◽  
Christina M. Thiele ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Nmr Spectroscopy ◽  
Self Assembled Monolayers ◽  
Gold Surfaces ◽  
Gold Substrates ◽  
Assembled Monolayers ◽  
Self Assembled

The photochromic and electrochemical switching capabilities of two dithienylethenes with different substitutions and their self-assembled monolayers on gold surfaces are characterized by in situ NMR-spectroscopy and cyclic voltammetry.

scholarly journals Electrochemical Study of Biotin-Modified Self-Assembled Monolayers: Recommendations for Robust Preparation

2006 ◽  
Vol 6 ◽  
pp. 20-29 ◽  
Author(s):  
Richard J.C. Brown ◽  
Dan J.L. Brett
Keyword(s):  
Cyclic Voltammetry ◽  
Impedance Spectroscopy ◽  
Self Assembled Monolayers ◽  
Gold Surfaces ◽  
Precursor Molecule ◽  
End Groups ◽  
Assembled Monolayers ◽  
Polycrystalline Gold ◽  
Self Assembled ◽  
First Time

The development of the underpinning methodology for the production of robust, well-formed, and densely packed biotin-HPDP functionalised gold surfaces, the crucial first step in immobilising bimolecules on surfaces, is described. Self-assembled monolayers (SAMs) with biotin end-groups were prepared on polycrystalline gold surfaces according to a published method. The layers formed were studied using cyclic voltammetry to determine the composition of the layer and its quality. Crystal impedance spectroscopy was also applied as a complimentary indicator of the composition of the layer.For the first time, the effect of assembly time on the properties of the layer was studied along with the composition of the layer and the ability of the precursor molecule to self-assemble by oxidative addition.

Nanoporous Thin Films Formed from Photocleavable Diblock Copolymers on Gold Substrates Modified with Thiolate Self-Assembled Monolayers

Langmuir ◽  
2020 ◽  
Vol 36 (31) ◽  
pp. 9259-9268 ◽  
Author(s):  
Takashi Ito ◽  
Herman Coceancigh ◽  
Yi Yi ◽  
Jay N. Sharma ◽  
Fred C. Parks ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Self Assembled Monolayers ◽  
Gold Substrates ◽  
Assembled Monolayers ◽  
Self Assembled

Spectral and cyclic voltammetric characterization of self-assembled monolayers on gold of pyrene end-labeled oligonucleotide duplexes

1999 ◽  
Vol 77 (5-6) ◽  
pp. 1077-1084 ◽  
Author(s):  
R Scott Reese ◽  
Marye Anne Fox
Keyword(s):  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Self Assembled Monolayer ◽  
Surface Emission ◽  
Assembled Monolayers ◽  
Oligonucleotide Duplex ◽  
Self Assembled ◽  
Duplex Formation

Self-assembled monolayers of sulfur-terminated oligonucleotide duplexes were formed on flat gold surfaces, either by exposure of a self-assembled monolayer bearing one oligonucleotide strand to the complementary strand or by preformation of a oligonucleotide duplex that was then deposited on a fresh gold surface. Virtually identical spectral behavior was observed whether the duplex was produced before deposition or by in situ complementary association. With a duplex bearing an appropriate pyrene end-label, the resulting thin film was photoresponsive. Surface emission measurements show no evidence for pyrene aggregation on the modified surfaces. The polarity of the photocurrent, reflecting photoinduced electron transfer initiated by photoexcitation of pyrene, is opposite that expected from the oligonucleotide-mediated reduction of the appended pyrene excited state.Key words: oligonucleotide, self-assembled monolayer, duplex formation, photoelectrochemistry, surface emission.

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