Beilstein J. Nanotechnol.2015,6, 2154–2160, doi:10.3762/bjnano.6.221
Heritage, University of Salento, Via per Arnesano, Lecce, Italy 10.3762/bjnano.6.221 Abstract Cu,H2-bis-porphyrin (Cu,H2-Por2), in which copper porphyrin and free-base porphyrin are linked together by an ethano-bridge, was dissolved in chloroform and spread at the air/liquid subphase interface of a
Langmuir trough. The bis-porphyrin derivative, floating film was characterized by reflection spectroscopy and the surface pressure of the floating film was studied as a function of the mean area per molecule. When aromatic amines are dissolved in the subphase, an evident interaction between the bis
bis-porphyrin derivative. The Langmuir–Schaefer technique has been used to transfer the floating bis-porphyrin film (when using pure water as a subphase) to a surface plasmon resonance (SPR) substrate and the resulting device was able to detect the presence of aniline at concentrations as low as 1 nM
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Figure 1:
(a) Syn- and (b) anti-conformations of an ethano-bridged bis-porphyrin.