SAMs high-quality aromatic

While some features, such as the formation of UPD islands, were commonly reported for various systems (different thiols and metals, that is, Ag and Cu) differing interpretations were given with respect to the details such as formation, extension or height, possibly due to the sometimes difficult interpretation of data that, furthermore, can vary with the details of the system and the experimental conditions applied. Some of the issues could be resolved in a recent study on high-quality aromatic SAMs where the UPD process could be extremely slowed down to allow time-resolved in-situ studies [43]. 

Figure 5.2 STM images ofthiols SAM on Au/mica illustrating the range of structural qualities, (a) high-quality SAM of dodecane thiol prepared from a solution of dodecane thiocyanate [111] and a low-quality aromatic SAM of methylbiphenyl butane thiol (MBP4) (b) [90].

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