Solvatochromic Stokes shift and determination of excited state dipole moments of free base and zinc octaethylporphyrin

Phosphonate-substituted porphyrins as efficient, cost-effective and reusable photocatalysts

“…As reported in the literature for related compounds, 76 all synthesized M(TPPP) were found to displaynegligible solvatochromic properties (Table 2). In our case, it suggests the absence of axial coordination of phosphonate groups to the central metal ions and the non-dissociation of the axial chloride ion in In(TPPP).…”

Non-Radiative Transitions in Metal-Free Octaethylporphyrin and 2-Nitrofluorene Donor-Acceptor System

“…The absorption spectra of 2NF showed a peak at 332 nm due to S0→S1 transition. These are known features of the present donor and acceptor molecules [27,28]. It is seen that in our present study, there was no ground state complex formation, when OEP and 2NF were mixed together in the solvent ACN, even at high concentrations of the quencher (2NF).…”

Photophysical comparison of Zn(ii) phthalocyanaine tetrasulfonate and Zn(ii) tetrakis(4-sulfonatophenyl)porphyrin encapsulated within the Zn-polyhedral metal organic framework, HKUST-1(Zn)

“…In the case of Zn( ii ) porphyrin and phthalocyanine macrocycles the ground state dipole moment is relatively small (∼0.01D) due to the high symmetry while the excited states exhibit dipole moments on the order of 2D. 26 The octahemioctahedral cavities, which encapsulate the Zn4SP and are most likely to encapsulate the ZnPcS4 macrocycles, have restricted solvent accessible voids (Fig. 1, bottom).…”