Matrix‐assisted laser desorption/ionisation quadrupole ion trap time‐of‐flight mass spectrometry of novel shape‐persistent macrocycles

Abstract

Alkoxy-decorated SPMs represent promising electron-donating building blocks that can be exploited in electronics and optoelectronics for the development of robust and highly efficient laser-activated supramolecular switches.

Phenanthrylene-butadiynylene and Phenanthrylene-thienylene Macrocycles: Synthesis, Structure, and Properties

“…Interestingly, the cyclic dimer that was formed in about 10% in the published procedure for 1b was not observed in our case. The higher cyclic oligomers were detected instead by NMR and MALDI-MS; however, none of them was isolated except for the tetramers mentioned.…”

“…Dimers, trimers, and even higher assemblies were also detected by MALDI-MS spectra in samples of the macrocycles 1 , 6 , and 7 in solid state. The unique ionization and fragmentation of the molecules found in the MALDI-MS spectra are discussed elsewhere …”