Vacuum UV studies of protonated serine clusters

In a recent work, we have shown that photon absorption can cause a chemical bond to be created between the two monomers within a protonated serine dimer, a process known as intra-cluster bond formation, despite this process not occurring following thermal excitation via low energy collision-induced dissociation (LE-CID). Here we show further evidence for non-statistical photon-induced dissociation (PID) of the protonated serine dimer. In addition we discuss LE-CID and PID studies of the protonated serine octamer, showing that in this case as well, PID leads to non-statistical fragmentation and to the formation of two bonds between three neighboring monomers.

Automated summary

In our recent study, we have demonstrated that photon absorption can lead to the formation of chemical bonds within a protonated serine dimer, known as intra-cluster bond formation. This process is not observed following thermal excitation via low energy collision-induced dissociation. We provide further evidence for non-statistical photon-induced dissociation of the protonated serine dimer. Additionally, we discuss the results of studies on the protonated serine octamer, which also show non-statistical fragmentation and the formation of two bonds between three neighboring monomers through photon-induced dissociation.