Cobalt and gold atoms have been deposited on self-assembled molecular domains of terephthalic acid and are studied using low temperature scanning tunneling microscopy and DFT calculations. These two types of atoms present different adsorption properties as well as peculiar electronic structures. Co atoms are firmly adsorbed on the molecules while Au is highly dependent of the presence of diffusing hydrogen atoms. These latter can also favour the possible desorption of the adatoms or change their adsorption site depending on the presence of defective molecules. The results open the way to new investigations concerning the use of single atoms or molecules for chemistry at the subnanometer scale.

钴和金原子已沉积在对苯二甲酸的自组装分子域上，并使用低温扫描隧道显微镜和DFT计算进行了研究。这两种类型的原子具有不同的吸附特性以及独特的电子结构。钴原子牢固地吸附在分子上，而金原子高度依赖于氢原子扩散的存在。后者也可以根据可能存在的缺陷分子，促进吸附原子的可能解吸或改变其吸附位置。这些结果为在亚纳米规模上使用单个原子或分子进行化学研究提供了新的途径。