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Structural relaxation of molecules on surfaces can be monitored by observing the spectral evolution as increasing amount of thermal energy is made available. Naphthalene forms excimers in the excited state when amorphously prepared, but relaxes to a more ordered state when heated. Substituent groups on the naphthalene can substantially alter the available pathways during the thermally induced structural...
The crystallization of naphthalene and benzophenone on Al 2 O 3 (0001) was studied by monitoring the emission from optically pumped excited electronic states. Adlayers of these molecules were initially prepared in their amorphous state by vacuum deposition onto the Al 2 O 3 surface at 90K. Prepared in this way, naphthalene exhibits excimeric emission, as characterized...
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