-Tetraphenylporphyrin purification

Barnett, Graham H.; Hudson, Mervyn F.; Smith, Kevin M.

doi:10.1016/s0040-4039(01)96078-2

Cited by 80 publications

(23 citation statements)

References 6 publications

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“…Therefore, we suggest the SAT complex has a structure with a very similar porphyrin core to prior species [19][20][21][22][23][24]. This conformation induces a distortion in the porphyrin plane enhancing the donor ability of the nitrogen lone pairs by directing them away from the central porphyrin cavity (figure 3).…”

Section: Resultsmentioning

confidence: 93%

Thermodynamic studies of sitting-atop (SAT) complexation of uranyl and free base meso -tetraarylporphyrins

Dehghani

Mansournia

2008

Journal of Coordination Chemistry

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The interaction of uranyl with meso-tetraphenylporphyrin and its para-substituted derivatives (H 2 t(4-X)pp, X : H, Br, Cl, CH(CH 3 ) 2 , OCH 3 , CH 3 ) in chloroform produced 1 : 1 sitting-atop (SAT) complexes ((uranyl)H 2 t(4-X)pp). Formation constants were calculated by computer fitting of complex absorbance versus mole ratio data to appropriate equations and found to decrease with temperature increase. Thermodynamic parameters, ÁG 0 , ÁH 0 and ÁS 0 were obtained. The formation constants vary with changing of the substituent on the aryl rings of H 2 t(4-X)pp in the following order: (uranyl)H 2 t(4-OCH 3 )pp4(uranyl)H 2 t (4-CH 3 )pp4(uranyl)H 2 t(4-CH(CH 3 ) 2 )pp4(uranyl)H 2 tpp4(uranyl)H 2 t(4-Br)pp4(uranyl)H 2 t (4-Cl)pp.

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Section: Resultsmentioning

confidence: 93%

Thermodynamic studies of sitting-atop (SAT) complexation of uranyl and free base meso -tetraarylporphyrins

Dehghani

Mansournia

2008

Journal of Coordination Chemistry

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“…H 2 TPP and ZnTPP were prepared and purified by known procedures [26][27][28]. The metalated molecules MTPP and MTPP-b-Py + (M = Ni II , Cu II and Pd II ) were obtained by classical metallation from the corresponding free-base [28].…”

Section: Synthesismentioning

confidence: 99%

Electrochemical reduction of l-(meso-tetraphenylporphyrin)-pyridinium cations

Brisach-Wittmeyer

Lobstein

Gross

et al. 2005

Journal of Electroanalytical Chemistry

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“…Zinc tetraphenylporphyrin (ZnTPP), used in this study, was synthesized from purified H 2 TPP (chlorin free) [7] and zinc acetate, using standard literature preparation and chromatographic purification methods [8]. Addition of Eu 3+ -ions to the colloidal solution of CdS nanoparticles was carried out using a solution of freshly prepared Eu(ClO 4 ) 3 in 2-propanol.…”

Section: Methodsmentioning

confidence: 99%

Photochemical reactivity of zinc tetraphenylporphyrin induced by nonstoichiometric CdS nanoparticles in 2‐propanol

Isarov

Chrysochoos

2001

International Journal of Photoenergy

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The photoreactivity of zinc tetraphenylporphyrin (ZnTPP) in the presence of photoexcited CdS nanoparticles and molecular oxygen in 2-propanol has been revisited. The photodecomposition of ZnTPP in 2-propanol, in the presence of CdS(e-CB/h+VB)and molecular oxygen, is linked to isopropyl free radicals formed by both hole transfer from CdS(h+VB)to(CH3)2CHOH and the reaction of superoxide ion(O2−)with 2-propanol. Isopropyl free radicals react with ZnTPP, leading to the formation ofZnTPP•−. Intermediate paramagnetic species monitored by EPR spectroscopy(g=2.0029,ΔH=5.7G)were characterized as superoxides formed in the reaction ofZnTPP•−withO2. Further transformations of such EPR-active species lead to the formation of diamagnetic intermediate photoproducts of ZnTPP observed by absorption and emission spectroscopy.

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-Tetraphenylporphyrin purification

Cited by 80 publications

References 6 publications

Thermodynamic studies of sitting-atop (SAT) complexation of uranyl and free base meso -tetraarylporphyrins

Thermodynamic studies of sitting-atop (SAT) complexation of uranyl and free base meso -tetraarylporphyrins

Electrochemical reduction of l-(meso-tetraphenylporphyrin)-pyridinium cations

Photochemical reactivity of zinc tetraphenylporphyrin induced by nonstoichiometric CdS nanoparticles in 2‐propanol

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