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Nonlinear Optical Properties of Porphyrin, Fullerene and Ferrocene Hybrid Materials
| Content Provider | MDPI |
|---|---|
| Author | Limosani, Francesca Tessore, Francesca Carlo, Gabriele Di Forni, Alessandra Tagliatesta, Pietro |
| Copyright Year | 2021 |
| Description | In this research, we investigated the second-order nonlinear optical (NLO) properties of multicomponent hybrid materials formed by meso-tetraphenylporphyrin P (both as free base and $Zn^{II}$ complex), carrying in 2 or 2,12 β-pyrrolic position an electron donor ferrocene (Fc), and/or an electron acceptor fullerene (C60) moiety, connected to the porphyrin core via an ethynyl or an ethynylphenyl spacer. We measured the NLO response by the electric-field-induced second-harmonic generation (EFISH) technique in $CH_{2}Cl_{2}$ solution with a 1907 nm incident wavelength, recording for all the investigated compounds unexpected negative values of $μβ_{1907}$. Since density functional theory (DFT) calculations evidenced for P-Fc dyads almost null ground state dipole moments and very low values for P-C60 dyads and Fc-P-C60 triads, our EFISH results suggested a significant contribution to $γ_{EFISH}$ of the purely electronic cubic term γ(−2ω; ω, ω, 0), which prevails on the quadratic dipolar orientational one μβ(−2ω; ω, ω)/5kT, as confirmed by computational evidence. |
| Starting Page | 4404 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14164404 |
| Journal | Materials |
| Issue Number | 16 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-06 |
| Access Restriction | Open |
| Subject Keyword | Materials Toxicology Porphyrins Fullerene Ferrocene Nonlinear Optics Hybrid Materials Dyads Triads |
| Content Type | Text |
| Resource Type | Article |
