Self-assembly of pyrene derivatives on Au(111): substituent effects on intermolecular interactions (original) (raw)

“…The self‐assembled network formed by the mono‐brominated compound 7 is somewhat similar to that formed by 6 (Figure f, i). Similar to the results described above, the influence of the number of Br substituents on 2D self‐assembly of a pyrene derivative has been reported on Au(111) surface using UHV STM carried out at room temperature …”

Section: Halogen‐halogen Interactions and Halogen‐bonding In Self‐asssupporting

“…atoms covalently bonded to C atoms) . Similar quadruple nodes based on X 4 synthons have been reported for self‐assembly of brominated pyrenes on Au(111) under UHV conditions …”

Section: Halogen‐halogen Interactions and Halogen‐bonding In Self‐asssupporting

“…The formed triangular binding motif consists of both Br−Br halogen and Br−H hydrogen bonds, which are responsible for the network formation. More information can be found in our recent report on monolayer coverage of the same molecule on Au(111) with room temperature STM measurements …”

Section: Resultsmentioning

“…More information can be found in our recent report on monolayer coverage of the same molecule on Au(111)w ith room temperature STM measurements. [49] To initiate ac ovalent coupling reactionb etween the Br 4 Py molecules on Au(111), the sample was annealed at 473 Kf or 15 min and subsequentlyc ooled to 77 Kf or the STM measurements.From the STM image in Figure 6a,t he disappearance of the 2D self-assembled patterns can be inferred. Instead, disordered 2D arrays and clusters were observed.…”

Section: On-surfacep Olymerization Of Br 4 Py On Au(111)mentioning

“…In addition, the metal substrate not only serves as a support of low dimensional nanostructures, but also decreases the activation energy of dehydrogenation, leading to more participants in the process of coupling after C-H bond being separated [19][20][21][22]. On one hand, metal substrates decrease the relatively large bond dissociation enthalpy to let the action be easily done.…”

Section: Dehydrogenation Reactionmentioning