The neutral S-1 excited state and the ion ground state of 9-ethylfluorene-Ar-n van der Waals complexes have been studied for n = 1 - 3. Resonance enhanced multiphoton ionization spectroscopy of the S-1 state of the argon clusters reveals multiple isomeric structures for each of the cluster sizes studies coupled with the two monomer conformations. The n = 1 cluster shows three isomers, one of the symmetric 9-ethylfluorene and two of the unsymmetric. The n = 2 clusters has four possible isomers all of which are assigned to a (1\1) conformation, although each represents a unique structure with different argon binding sites. The n = 3 cluster collapses down to two dominate isomers, one for each conformation of the parent. Mass analyzed threshold ionization (MATI) spectroscopy was used to investigate the ion, as well as assisting in isomer assignment of the S-1 spectrum. IVR and dissociation of the argon complexes have also been studied with MATI spectroscopy. Ab initio calculations are used to determine the binding energy for all conformers and isomers of the n = 1 complex. These values are in excellent agreement with the experimentally bracketed values, and prove useful in isomer assignments. Redistribution of the 208 cm(-1) band of the n = 2 symmetric conformation shows dynamics suggesting interconversion of all isomers to a new unassigned structure. Preferential dissociation of the argon located on the ethyl chain side of the sym-9-ethylfluorene-Ar-2 complex is observed in both isomers.