Competing interaction of different thiol species on gold surfaces

Characterization of iron surface modified by 2-mercaptobenzothiazole self-assembled monolayers

“…Because the MBT molecule contained two sulphur atoms and they were in different positions, the S 2p peak was therefore fitted into two different peaks. The low-energy component (161.9 eV) corresponds to the exocyclic sulphur atom and the peak at 164.0 eV is attributed to the endocyclic sulphur, which is in agreement with those in the literature [35]. Besides, a distinct sharp peak at 400.0 eV was N 1s without any doubt.…”

Electronic Properties of Interfaces between PCPDTBT and Prototypical Electrodes Studied by Photoemission Spectroscopy

“…The binding energy of 399.9 eV is typical for N 1s in organic compounds. [15,16] Several species contribute to the C 1s signal and we observe an asymmetric peak with a tail to higher binding energies. For thiophenes we expect two components, corresponding to CÀS and C=C bonding configurations.…”

“…The adsorption of the SAM results in the removal of carbon contamination layers. [16,27] The chemical interaction between PCPDTBT and Au discussed below suggests that also for the system considered herein the contamination can be replaced by the polymer. Therefore, we use the work function of Au after preparation in UHV for the discussion of the electronic properties.…”

“…A chemical interaction between sulfur and Au has already been investigated for other systems such as thiols. [16,27] On the other hand, for thiophenes, such interactions are not yet known. The appearance of an additional peak only in the S 2p spectra, reveal a local chemical interaction between Au and the sulfur atoms in PCPDTBT.…”

Superluminescence from an optically pumped molecular tunneling junction by injection of plasmon induced hot electrons

“…The experimental apparatus and conditions are described in detail in Supporting Information File 1 ( Figures S1-S4). For the specimen, we have chosen a Au film covered with a monolayer of 5-chloro-2-mercaptobenzothiazole (Cl-MBT) molecules since (i) they chemically bind to the metal substrate (Figure 1c) via the sulfur atoms with the molecular plane oriented almost perpendicular to the substrate and at the same time allowing their p-electron systems to interact with the surface orbitals of the substrate [24,25]. (ii) Their first electronically excited state lies in the ultraviolet and cannot be reached by the laser photons at λ = 632.8 nm, therefore reducing photo damage and (iii) they have a static electric dipole moment with a negative partial charge located on the Cl atom bound to the benzene ring.…”