Optical Characterization of Oligo(phenylene−ethynylene) Self-Assembled Monolayers on Gold

2004 ◽  
Vol 108 (33) ◽  
pp. 12547-12559 ◽  
Author(s):  
Lee J. Richter ◽  
Clayton S.-C. Yang ◽  
Philip T. Wilson ◽  
Christina A. Hacker ◽  
Roger D. van Zee ◽  
...  
Keyword(s):  
Optical Characterization ◽  
Self Assembled Monolayers ◽  
Phenylene Ethynylene ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals X-ray spectroscopy characterization of self-assembled monolayers of nitrile-substituted oligo(phenylene ethynylene)s with variable chain length

2012 ◽  
Vol 3 ◽  
pp. 12-24 ◽  
Author(s):  
Hicham Hamoudi ◽  
Ping Kao ◽  
Alexei Nefedov ◽  
David L Allara ◽  
Michael Zharnikov
Keyword(s):  
Chain Length ◽  
Photoelectron Spectroscopy ◽  
Self Assembled Monolayers ◽  
Phenylene Ethynylene ◽  
X Ray ◽  
Molecular Length ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Gold Thiolate

Self-assembled monolayers (SAMs) of nitrile-substituted oligo(phenylene ethynylene) thiols (NC-OPEn) with a variable chain length n (n ranging from one to three structural units) on Au(111) were studied by synchrotron-based high-resolution X-ray photoelectron spectroscopy and near-edge absorption fine-structure spectroscopy. The experimental data suggest that the NC-OPEn molecules form well-defined SAMs on Au(111), with all the molecules bound to the substrate through the gold–thiolate anchor and the nitrile tail groups located at the SAM–ambient interface. The packing density in these SAMs was found to be close to that of alkanethiolate monolayers on Au(111), independent of the chain length. Similar behavior was found for the molecular inclination, with an average tilt angle of ~33–36° for all the target systems. In contrast, the average twist of the OPEn backbone (planar conformation) was found to depend on the molecular length, being close to 45° for the films comprising the short OPE chains and ~53.5° for the long chains. Analysis of the data suggests that the attachment of the nitrile moiety, which served as a spectroscopic marker group, to the OPEn backbone did not significantly affect the molecular orientation in the SAMs.

Active Photonic Crystal Devices in Self-Assembled Electro-Optic Polymeric Materials

2004 ◽  
Vol 817 ◽  
Author(s):  
J. Li ◽  
P. J. Neyman ◽  
M. Vercellino ◽  
J. R. Heflin ◽  
R. Duncan ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polymeric Materials ◽  
Optical Characterization ◽  
Photonic Devices ◽  
Self Assembled Monolayers ◽  
Electro Optic ◽  
Assembled Monolayers ◽  
Novel Approaches ◽  
Self Assembled

AbstractPhotonic crystals (PC) offer novel approaches for integrated photonics by allowing the manipulation of light based on the photonic bandgap effect rather than internal-reflection mechanisms employed in traditional devices. Electro-optic polymers represent interesting possibilities for the development of devices leveraging control over the phase of a confined propagating wave. We here report on the development of such active photonic crystal technology in ionically self-assembled monolayers. The simulation of active photonic devices such as Mach-Zehnder interferometers and wavelength multiplexers is first presented. We then report on the synthesis and optical characterization of electro-optic films grown through the ISAM technique. We conclude by presenting the preliminary development of a nanofabrication platform that would enable the realization of active photonic devices in such materials.

Structural and Chemical Characterization of Monofluoro-Substituted Oligo(phenylene−ethynylene) Thiolate Self-Assembled Monolayers on Gold

Langmuir ◽  
2004 ◽  
Vol 20 (15) ◽  
pp. 6195-6205 ◽  
Author(s):  
Christina A. Hacker ◽  
James D. Batteas ◽  
Jayne C. Garno ◽  
Manuel Marquez ◽  
Curt A. Richter ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Self Assembled Monolayers ◽  
Phenylene Ethynylene ◽  
Assembled Monolayers ◽  
Self Assembled

Optical Characterization of Thiolate Self-Assembled Monolayers on Au(111)

2008 ◽  
Vol 112 (10) ◽  
pp. 3899-3906 ◽  
Author(s):  
Mirko Prato ◽  
Riccardo Moroni ◽  
Francesco Bisio ◽  
Ranieri Rolandi ◽  
Lorenzo Mattera ◽  
...  
Keyword(s):  
Optical Characterization ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

Self-assembled Monolayers Preparation and Characterization of BiFeO3 Thin Films

2009 ◽  
Vol 25 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Guo-Qiang TAN ◽  
Hai-Yang BO ◽  
Hong-Yan MIAO ◽  
Ao XIA ◽  
Zhong-Liang HE
Keyword(s):  
Thin Films ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals Characterization of Self-Assembled Monolayers on a Ruthenium Surface

Langmuir ◽  
2017 ◽  
Vol 33 (25) ◽  
pp. 6419-6426 ◽  
Author(s):  
A. Shaheen ◽  
J. M. Sturm ◽  
R. Ricciardi ◽  
J. Huskens ◽  
C. J. Lee ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
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.

scholarly journals Synthesis and Characterization of Conjugated Mono- and Dithiol Oligomers and Characterization of Their Self-Assembled Monolayers

Langmuir ◽  
2003 ◽  
Vol 19 (10) ◽  
pp. 4272-4284 ◽  
Author(s):  
Bert de Boer ◽  
Hong Meng ◽  
Dmitrii F. Perepichka ◽  
Jie Zheng ◽  
Martin M. Frank ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Synthesis And Characterization ◽  
Assembled Monolayers ◽  
Self Assembled
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