The interaction of the 4,5‐bis(diphenylthiophosphinoyl)‐1,2,3‐triazolate (SPTz⁻) with different gold surfaces was investigated (nanoparticles, an electrode, and flat sheets). Studies on binding affinity of this dithiophosphin‐triazolate on a gold electrode were performed by cyclic voltammetry (CV). Voltammograms exhibit two reductive desorption and only one oxidative readsorption, indicating that once reabsorbed, the molecule achieves a unique conformation. The morphology and average size of modified gold nanoparticles were studied by transmission electron microscopy (TEM) (av. diameter of 5.9 ± 1.8 nm). Further characterization was made by UV‐visible (UV‐vis) spectroscopy showing surface plasmon resonance (SPR) at about 580 nm. The bonding configurations of SPTz⁻ on gold have also been investigated by comparing the FT‐IR and FT‐Raman spectra. The ³¹P{¹H} NMR spectrum of capped nanoparticles exhibited two sharp signals at 30.3 and 29.6 ppm and a very broad signal at 72.7 ppm. X‐ray photoelectron spectroscopy (XPS) showed SPTz⁻ can accomplish a strong interaction with gold nanoparticles through bonds involving a sulfur atom and a nitrogen from the triazole ring with a free terminal PS group, forming self‐assembled monolayers (SAM). This may allow subsequent functionalization through free S/N atoms of the formed SAMs. The SPTz⁻ packing led to a reduction in packing density that permits large spaces between adsorbed headgroups and the inclusion of carbon and oxygen impurities from small molecules; nevertheless, oxidized sulfur or nitrogen species were not detected, indicating the chemical stability of the obtained SAMs.

中文翻译：

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4,5-双（二苯基硫代膦酰基）-1,2,3-三唑酸酯与金纳米颗粒和平坦表面的相互作用形成自组装单层

的4,5-双（diphenylthiophosphinoyl）-1,2,3-三唑（SPTz的相互作用^- ）具有不同的金表面进行了研究（纳米颗粒，电极和平板）。通过循环伏安法（CV）对该二硫代膦三唑化物在金电极上的结合亲和力进行了研究。伏安图显示两个还原性解吸和一个氧化性再吸收，表明一旦被重新吸收，该分子将获得独特的构象。通过透射电子显微镜（TEM）（平均直径为5.9±1.8 nm）研究了改性金纳米颗粒的形貌和平均尺寸。紫外可见（UV-vis）光谱进一步表征，显示在约580 nm处的表面等离振子共振（SPR）。SPTz的绑定配置^-还通过比较FT-IR和FT-拉曼光谱研究了金上的金。封端的纳米粒子的³¹ P { ¹ H} NMR光谱在30.3和29.6 ppm处显示两个尖锐信号，在72.7 ppm处显示非常宽的信号。X射线光电子能谱（XPS）显示SPTz ^-可以通过涉及硫原子和从三唑环具有游离终端PS基中的氮，形成自组装单层（SAM）键完成与金纳米颗粒具有强的相互作用。这可以允许随后通过形成的SAM的自由S / N原子进行功能化。该SPTz ^-堆积导致堆积密度降低，从而使被吸附的头基之间具有较大的空间，并包含了小分子中的碳和氧杂质。然而，未检测到氧化的硫或氮物质，表明获得的SAM的化学稳定性。