Adsorption states and thermal desorption behaviors of thiophene derivative self-assembled monolayers on Au(111)

Ito, Eisuke; Noh, Jaegeun; Hara, Masahiko

doi:10.1016/j.susc.2008.08.025

Cited by 24 publications

(32 citation statements)

References 47 publications

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“…2b and c). Similar strong TD spectra showing decomposition of molecules were observed from other SAM systems, such as 2-antracene-2-thiol or thiophenemethanethiol SAMs on an Au(111) surface [31,32]. The decomposed desorption for the BMT SAM was observed at a lower temperature compared to that of the BT SAM.…”

Section: Thermal Desorption Behaviorsupporting

confidence: 73%

“…Recently, we found that p-conjugated thiophene (TP) derivatives showed that their desorption behaviors are quite different from those of AT SAMs. The strong TDS spectra resulting from the structural decomposition via cleavage of the sulfur and TP molecular backbone were observed in these molecular systems [8,32].…”

Section: Introductionmentioning

confidence: 95%

“…Dimerization of the sulfur head groups is strongly dependent on surface coverage, implying a second-order desorption process [25]. On the other hand, there are only a few reports regarding the thermal desorption process of SAMs prepared by aromatic thiols [8,17,[30][31][32]. The information on the thermal stability of functional SAMs on metal electrodes is necessary for the fabrication of stable organic devices.…”

Section: Introductionmentioning

confidence: 99%

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Self-assembled monolayers of benzenethiol and benzenemethanethiol on Au(111): Influence of an alkyl spacer on the structure and thermal desorption behavior

Noh

Ito

Hara

2010

Journal of Colloid and Interface Science

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Section: Thermal Desorption Behaviorsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Self-assembled monolayers of benzenethiol and benzenemethanethiol on Au(111): Influence of an alkyl spacer on the structure and thermal desorption behavior

Noh

Ito

Hara

2010

Journal of Colloid and Interface Science

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“…60,61 In our case, the Au 4f 7/2 and Au 4f 5/2 binding energies were slightly higher than the bulk Au 4f levels, which suggested that the Au atoms bond with the S atom in Poly(EDOT-MeSH). [62][63][64] The C 1s spectra of Poly(EDOT-MeSH) and the Poly(EDOT-MeSH)/Au hollow spheres display three peaks at 284.8, 286.1 and 288 eV (Fig. 4C), which correspond to the C-C, C-S and C-O bonds in Poly(EDOT-MeSH), respectively.…”

Section: Resultsmentioning

confidence: 99%

Hollow, Spherical, Poly(3,4-ethylenedioxythiophene)-Bearing Methanethiol as a Gold Stabilizer for High-Efficiency Electrochemical Sensors

Ali¹,

Abdiryim²,

Huang³

et al. 2018

J. Electrochem. Soc.

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Conducting polymers decorated with noble metals are good electrochemical sensors for biological species. In this work, we developed a polymer of methanethiol-grafted poly(3,4-ethylenedioxythiophene) hollow spheres (Poly(EDOT-MeSH)) using SiO 2 nanospheres as a hard template. The Poly(EDOT-MeSH) spheres were used as both a reductant and stabilizer to decorate gold nanoparticles (Au NPs). FTIR, XRD, EDX, SEM and TEM analyses were used to characterize the Poly(EDOT-MeSH)/Au hollow spheres. The chemical bond between S and Au was confirmed by XPS. The electrochemical performance of the Poly(EDOT-MeSH)/Au hollow spheres was determined by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results revealed that the Poly(EDOT-MeSH)/Au hollow sphere-based electrochemical sensor possesses an excellent conductivity and high redox reversibility with detection limits (S/N = 3) of 5.3, 0.04 and 0.12 μM in the linear ranges of 50-320 μM, 0.05 μM − 780 μM and 0.8 μM − 250 μM for the determination of AA, DA and UA, respectively. These results will further the development of this type of electrochemical sensor for biological species. Small biological species usually coexist in physiological fluids, which are very important for maintaining the functions of organisms.1,2 As typical biological species, dopamine (DA), uric acid (UA) and ascorbic acid (AA) are important components of the neural system and play significant roles in physiological functions.3,4 DA is a natural neurotransmitter that plays an important role in controlling the central nervous system and coordinating normal cardiovascular, renal, and hormonal functions. 5,6 The UA concentration in blood and urine is usually related to diseases such as Lesch-Nyhan syndrome, hyperuricemia, gout and kidney stones. 7,8 Therefore, the ability to detect and quantify these biological species is very important. Several analytical techniques, such as liquid chromatography, 9 ultraviolet visible spectroscopy, 10 capillary electrophoresis, 11,12 chemiluminescence 13,14 and spectrometry 15 have been used to detect single or multiple biological species. However, most of these techniques require specialized, expensive instruments and can be utilized only for individual determination. In the last few years, electrochemical techniques have attracted attention for the determination of multiple components due to their simplicity, low cost, minimal analysis time, high sensitivity, good selectivity and simple instrumentation. [16][17][18] However, the electrochemical oxidation of DA and UA is difficult to observe with conventional electrodes, such as glassy carbon, gold and platinum electrodes, because the oxidation products cause electrode surface fouling. 3,19 In addition, AA co-exists with DA and UA in most biological fluids, and the AA concentration is higher than that of DA and UA (100-1000 times higher than that of DA). 20 The AA oxidation peak often overlaps with the DA and UA peaks because their oxidation potentials on conventional electrodes are nearly equal. 21,22 To...

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“…In addition, understanding adsorption and thermal stability of fused thiophenes on metal surface allows for the development of high performance electronics. Self-assembled monolayers (SAMs) of thiophene have been widely investigated due to a variety of potential applications in, for example, sensors, corrosion inhibition, nanolithography, and molecular electronic devices [19][20][21][22][23][24][25]. However, to the best of our knowledge, there has been no study reported in the literature dealing with the influence of the molecular structure of thienothiophene derivatives on their self-organizing properties and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and thermal decomposition of 2-octylthieno[3,4-b]thiophene on Au(1 1 1)

Park

Zong

Jeon

et al. 2012

Journal of Colloid and Interface Science

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Adsorption states and thermal desorption behaviors of thiophene derivative self-assembled monolayers on Au(111)

Cited by 24 publications

References 47 publications

Self-assembled monolayers of benzenethiol and benzenemethanethiol on Au(111): Influence of an alkyl spacer on the structure and thermal desorption behavior

Self-assembled monolayers of benzenethiol and benzenemethanethiol on Au(111): Influence of an alkyl spacer on the structure and thermal desorption behavior

Hollow, Spherical, Poly(3,4-ethylenedioxythiophene)-Bearing Methanethiol as a Gold Stabilizer for High-Efficiency Electrochemical Sensors

Adsorption and thermal decomposition of 2-octylthieno[3,4-b]thiophene on Au(1 1 1)

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