886231-11-4Relevant academic research and scientific papers
General and Scalable Approach to A2B- and A2BC-Type Porphyrin Phosphonate Diesters
Enakieva, Yulia Yu.,Michalak, Julien,Abdulaeva, Inna A.,Volostnykh, Marina V.,Stern, Christine,Guilard, Roger,Bessmertnykh-Lemeune, Alla G.,Gorbunova, Yulia G.,Tsivadze, Aslan Yu.,Kadish, Karl M.
supporting information, p. 4881 - 4892 (2016/10/13)
A two-step reaction sequence for accessing meso-(dialkoxyphosphoryl)porphyrins from readily available trans-A2-type porphyrins was developed. This approach involves bromination and subsequent palladium-catalyzed phosphonylation. Optimal conditi
New acceptor-π-porphyrin-π-acceptor systems for solution-processed small molecule organic solar cells
Arrechea, Susana,Molina-Ontoria, Agustín,Aljarilla, Ana,De La Cruz, Pilar,Langa, Fernando,Echegoyen, Luis
, p. 109 - 117 (2015/06/08)
Two new conjugated acceptor-donor-acceptor (A-π-D-π-A) compounds having a Zn-porphyrin acting as donor and linked by ethynylenes to one or two units of thienylenevinylene and capped by dicyanovinylene groups as acceptor units have been synthesized and the
8-Hydroxylquinoline-conjugated porphyrins as broadband light absorbers for dye-sensitized solar cells
Si, Liping,He, Hongshan,Zhu, Kai
, p. 1565 - 1572 (2014/05/06)
Three porphyrin dyes, DPZn-HOQ, PZn-HOQ and DPZn-COOH, were synthesized and characterized for dye-sensitized solar cells. Both DPZn-HOQ and DPZn-COOH exhibited a donor-π-acceptor configuration with N,N-dimethylaniline as a donor and 8-hydroxylquinoline (HOQ) and para-benzoic acid (BZA) as acceptors, respectively. PZn-HOQ is an analogue of DPZn-HOQ without a donor. It was found that DPZn-HOQ exhibited broader and stronger light absorption capability in the red region than DPZn-COOH. Theoretical calculations showed that the electrons were delocalized to the 8-hydroxylquinoline ring in DPZN-HOQ. The DPZn-HOQ-sensitized solar cells exhibited higher energy conversion efficiency (3.09%) than DPZn-COOH-sensitized solar cells (1.76%) under the same conditions. The results were consistent with the incident photon to current conversion efficiency (IPCE) spectra. The electrochemical impedance spectroscopy studies revealed that HOQ-conjugated porphyrin exhibited high electron recombination resistance and a long electron lifetime, which was attributed to the effective shielding of DPZn-HOQ from the electrolyte due to its tilted orientation on the surface of TiO2 nanoparticles. The efficiency of DPZn-HOQ-sensitized solar cells was further increased to 3.41% when a complementary dye BET was used.
Synthesis and binding properties of arylethyne-linked porphyrin-zinc complexes for organic electronics applications
Reainthippayasakul,Paosawatyanyong,Bhanthumnavin
, p. 3617 - 3621 (2013/06/05)
Conjugated meso-alkynyl 5,15-dimesitylporphyrin metal complexes have been synthesized by Sonogashira coupling reaction in good yields. Alkynyl groups were chosen as a link at the meso positions in order to extend the π-conjugated length of porphyrin rings. These synthesized porphyrin derivatives were characterized by 1H NMR spectroscopy and MALDI-TOF mass spectrometry. Moreover, UV-visible spectroscopy and fluorescence spectroscopy were also used to investigate their photophysical properties. It has been demonstrated that central metal ions as well as meso substituents on porphyrin rings affected the electronic absorption and emission spectra of the compounds. Spectroscopic results revealed that alkyne-linked porphyrin metal complexes showed higher π-conjugation compared with porphyrin building blocks resulting in red shifts in both absorption and emission spectra. Coordination properties of synthesized porphyrins were preliminarily investigated by UV-visible absorption and fluorescence emission spectroscopic titration with pyridine as axial ligand. The formation of porphyrin-pyridine complexes resulted in significant red shifts in absorption spectra and decrease of fluorescence intensity in emission spectra. Moreover, the 1H NMR titration experiments suggested that central metal ions play an important role to coordinate with pyridine and the coordination of porphyrin zinc(II) complex with pyridine occur in a 1:1 ratio. From these spectroscopic results, alkyne-linked porphyrin metal complexes offer potential applications as materials for optical organic nanosensors. Copyright
