29116-34-5Relevant articles and documents
Bromine-lithium exchange as a straightforward method to obtain meso-tetrakis(4-formylphenyl)porphyrin: A versatile intermediate
?nal, Emel,Ahsen, Vefa,Pécaut, Jacques,Luneau, Dominique,Hirel, Catherine
, p. 5157 - 5160 (2015)
A three step, one-pot reaction has been developed for the introduction of the formyl functional group to the meso position of porphyrins. Symmetric meso-tetrakis(4-formylphenyl)porphyrin ((CHO)4TPPH2), an important cornerstone in porphyrin chemistry, was obtained selectively in good yields via bromine-lithium exchange and subsequent Bouveault reaction. The meso-tetrakis(4-formylphenyl)porphyrin was fully characterized by HR-ESI, UV-vis, NMR, and single crystal X-ray diffraction.
Zinc tetraphenylporphyrin-fluorene branched copolymers: Synthesis and light-emitting properties
Wang, Xiaochen,Wang, Haiqiao,Yang, Yi,He, Youjun,Zhang, Lei,Li, Yongfang,Li, Xiaoyu
, p. 709 - 715 (2010)
Three novel branched zinc tetraphenylporphyrin (ZnTPP)-fluorene copolymers P12, P100, and P1000, with different ZnTPP content, were designed and synthesized by a "A2 + A2′ + B 4" approach based on a facile one-pot Suzuki polycondensation reaction. The molar ratio of ZnTPP to fluorene units in the copolymers is 5.50% for P12, 0.91 % for P100, and 0.08% for P1000. The copolymers are thermally stable, readily soluble in common organic solvents, and show ZnTPP content-dependent absorption and emission properties. The band gap of the copolymers decreased with increasing content of ZnTPP from P1000 to P12, and the emission color of the copolymers changed from purplish pink to red. The OLED device using P12 as emitter showed pure red emission (CIE coordinates of x = 0.64, y = 0.30) with a maximum luminance of 740 cd/m2, which is among the highest values for pure red light-emission OLEDs based on porphyrin-containing copolymers. It is noteworthy that these devices all show reasonably stable efficiency over a broad current range, which is a satisfactory performance meeting the need for active-matrix-driven devices.
A copper(II) ion-selective on-off-type fluoroionophore based on zinc porphyrin-dipyridylamino
Weng, Yan-Qin,Yue, Fan,Zhong, Yong-Rui,Ye, Bao-Hui
, p. 7749 - 7755 (2007)
A new copper(II) fluorescent sensor 5,10,15,20-tetra((p-N,N-bis(2-pyridyl) amino)phenyl)porphyrin zinc (1) has been designed and synthesized by the Ullmann-type condensation of bromoporphyrin zinc with 2,2′-dipyridylamine (dpa) under copper powder as a catalyst as well as with K2CO 3 as the base in a DMF solution. It consists of two separately functional moieties: the zinc porphyrin performs as a fluorophore, and the dpa-linked-to-zinc porphyrin acts as a selected binding site for metal ions. It displays a high selectivity and antidisturbance for the Cu2+ ion among the metal ions examined (Na+, Mg2+, Cr3+, Mn2+, Fe2+, Co2+, Ni2+, Cu 2+, Ag+, Zn2+, Cd2+, Hg 2+, and Fe3+) and exhibits fluorescence quenching upon the binding of the Cu2+ ion with an on-off -type fluoroionophoric switching property. The detection limit is found to be 3.3 × 10-7 M (3s blank) for Cu2+ ion in methanol solution, and its fluorescence can be revived by the addition of EDTA disodium solution. The design strategy and remarkable photophysical properties of sensor 1 help to extend the development of fluorescent sensors for metal ions.
Liquid crystals from shape-persistent porphyrin stars with intrinsic free space
Dechant, Moritz,Gerbig, Lisa,Ghosh, Tapas,Lambov, Martin,Lehmann, Matthias
supporting information, p. 5562 - 5571 (2020/05/13)
A small library of shape-persistent, conjugated star-shaped liquid crystals (LCs) with a zinc porphyrin core was successfully synthesized. Different conjugated arms are attached in themeso-positions. The self-assembly is at the limit between liquid crystals and soft crystal phases owing to the space-filling requirement. A model indicates the formation of dimers in double helices. A remarkable mesogen with thiophene linked directly to the porphyrin core generates J-aggregates in solution, which persist in the solid state. In the liquid crystal the J-aggregates disappear but can be reversibly reobtained by solvent treatment.
4D-π-1A type β-substituted ZnII-porphyrins: Ideal green sensitizers for building-integrated photovoltaics
Covezzi,Orbelli Biroli,Tessore,Forni,Marinotto,Biagini,Di Carlo,Pizzotti
supporting information, p. 12642 - 12645 (2016/10/31)
Two novel green β-substituted ZnII-porphyrins, G1 and G2, based on a 4D-π-1A type substitution pattern have been synthesized. Their enhanced push-pull character, by reduction of H-L energy gaps, promotes broadening and red-shifting of absorption bands. The effective synthetic pathway and the remarkable spectroscopic properties make G2 ideal for BIPV application.
