| Summary: | 碩士 === 國立中山大學 === 化學系研究所 === 106 === Abstract
In the thermochemical study of 1H-1,2,3-Triazole adsorbed on graphene, TPD showed both molecular desorption and decomposition occur at 217 K. The ring is parallel to the basal plane of graphene via π-π interaction, resulting in a surface higher desorption peak temperature than that on clean Cu (111). While the former molecules adsorb in a layer by layer fusion, the latter is deposited by an island growth mode. In the photochemical studies, using two different UV light sources, RAIRS observed no reactions to take place during four hours irradiation period. In the thermochemical study of phenyl isocyanate on graphene, a new 2341 cm-1 feature grows upon annealing, which is attributed the dative bond between the lone pair electrons of the oxygen in N = C = O to the surface, making the N = C = O stretching frequency blue shift. TPD showed only molecules at 190 K with without the 365 nm irradiation, no thermochemical and photochemical reactions occur.
Keyword: ultrahigh vacuum, CVD graphene, UV LED, 1H-1,2,3-Triazole, Phenyl isocyanate
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