Abstract
The absence of residual anions on surfaces of Ag colloidal particles prepared by laser ablation was proved to be of key importance for reproducibility of metalation of a free-base cationic porphyrin, TMPyP [1]. The same testing SERRS experiment indicates that surfaces of the laser-ablated colloids are highly reactive towards Ag-TMPyP surface complex formation. We probe the ability of 3-thiopheneacetic acid (TAA) to modify the surface of laser-ablated Ag colloidal particles and prevent metalation of TMPyP [2]. We than apply the same test to a conventionally prepared, borohydride-reduced Ag colloid. In this contribution, the results obtained are quantitatively evaluated.
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