A series of molecules with oligophenylene backbone, thiolate anchoring group, and pentafluoro-λ⁶-sulfanyl (−SF₅) tail group was synthesized and used as precursors to form self-assembled monolayers (SAMs) on Au(111) substrates. The resulting SAMs feature dense molecular packing, upright molecular orientation, and chemically homogeneous SAM-ambient interface, comprised entirely of the −SF₅ moieties. These SAMs exhibit exceptional wetting and electrostatic properties, showing advancing water contact angles up to 103° and work function values up to 5.96 eV—probably the highest values reported for any aromatic monolayers on gold. They also feature a comparably low value of the tunnelling decay coefficient (0.38 ± 0.07 Å⁻¹), typical of oligophenylene backbone, which is not affected by the introduction of the −SF₅ group. The latter also hardly affects the current densities at a specific bias compared to analogous monolayers with other electronegative tail groups. The superior electrostatic and good charge transport properties of the designed, SF₅-terminated SAMs make them potentially useful for interface engineering in organic electronics and photovoltaics.

合成了一系列具有低聚亚苯基主链、硫醇锚定基团和五氟-λ ⁶ -硫基 (-SF ₅ ) 尾基的分子，并用作前体在 Au(111) 基底上形成自组装单分子层 (SAM)。由此产生的 SAM 具有密集的分子堆积、直立的分子取向和化学均匀的 SAM-环境界面，完全由 −SF ₅部分组成。这些 SAM 表现出卓越的润湿和静电特性，前进水接触角高达 103°，功函数值高达 5.96 eV——可能是金上任何芳香单分子层报道的最高值。它们还具有相对较低的隧道衰减系数值 (0.38 ± 0.07 Å ^-1), 典型的低聚亚苯基主链，不受引入-SF ₅基团的影响。与具有其他电负性尾基的类似单层相比，后者也几乎不影响特定偏压下的电流密度。_{所设计的 SF 5}端基 SAM具有优异的静电和良好的电荷传输特性，使其有可能用于有机电子和光伏的界面工程。