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Ding KW, Li TQ, Ge ZX, Bu JH, Liu Y. The sequential structure of tripyridiniumylporphyrin pendants in water-soluble copolymers and their association behaviour with tetrasulfonatophenylporphyrin guests: UV-vis absorption and fluorescence emission spectra study. RSC Adv 2018; 8:35759-35767. [PMID: 35547895 PMCID: PMC9087862 DOI: 10.1039/c8ra06873a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/08/2018] [Indexed: 11/21/2022] Open
Abstract
A novel cationic tripyridiniumylporphyrin monomer, 5-[4-[2-(acryloyloxy)ethoxy]phenyl]-l0,l5,20-tris(N-methyl-4-pyridiniumyl)porphyrinate zinc(ii) (ZnTrMPyP), was synthesized, and its self-aggregation in water was studied by UV-vis absorption. The monomer was copolymerized with acrylamide in water and DMSO, respectively, to prepare the water-soluble polymers P-W and P-D. The aggregation behaviour of the copolymers in aqueous solution was investigated by UV-vis absorption and fluorescence emission spectra. The polymer P-D displayed very similar absorption and emission spectra to those of ZnTrMPyP in water, indicating that the polymer chains in P-D have no significant effect on the aggregate structure of ZnTrMPyP in aqueous media. In comparison, two new absorption bands appeared in the Q band range of polymer P-W and its fluorescence spectra red shifted and the fluorescence quantum yield decreased obviously. These characteristics remained unchanged even in a good solvent for the monomer, suggesting that a new aggregation structure for the porphyrin pendants fixed by the covalent bond was formed. According to the different dispersed states of the porphyrin monomer in water and DMSO, the porphyrin pendants should distribute randomly in the P-D polymer chains while having micro-blocky sequences in polymer P-W. The association behaviour between the copolymers and tetra(p-sulfonatophenyl)porphyrin, TSPP, bearing opposite charged substituents were studied by absorption and emission Spectra and further analyzed by the Benesi–Hildebrand and the Stern–Volmer methods. The results showed that relatively discrete porphyrin pendants in P-D formed a 1 : 1 stoichiometric complex with TSPP and both static and dynamic mechanisms were active in this quenching process, while the tightly associated porphyrin pendants in P-W interacted with TSPP as an entirety and static quenching was dominant in this process. This observation was in accordance with their sequential structure. The polymer P-W has a wider absorption range and higher absorption intensity in the long wavelength region than the porphyrin monomer, which can more efficiently absorb light to accomplish light harvesting in water. Water-soluble random and micro-blocky copolymers P(ZnTrMPyP-AM) were prepared and the porphyrin pendants on them associate with anionic porphyrins in different manner.![]()
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Affiliation(s)
- Ke-Wei Ding
- State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an 710065 China .,Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Tao-Qi Li
- Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Zhong-Xue Ge
- State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an 710065 China .,Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Jian-Hua Bu
- Xi'an Modern Chemistry Research Institute Xi'an 710065 China
| | - Ying Liu
- Xi'an Modern Chemistry Research Institute Xi'an 710065 China
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Carbon dioxide capture and conversion by an environmentally friendly chitosan based meso-tetrakis(4-sulfonatophenyl) porphyrin. Carbohydr Polym 2017; 175:575-583. [DOI: 10.1016/j.carbpol.2017.08.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 08/05/2017] [Accepted: 08/07/2017] [Indexed: 11/24/2022]
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3
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Zhang W, Xing L, Wang H, Liu X, Feng Y, Gao C. Preparation of novel porphyrin nanomaterials based on the pH-responsive shape evolution of porphyrin microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4330-4340. [PMID: 25798879 DOI: 10.1021/acs.langmuir.5b00322] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The shapes and properties of self-assembled materials can be adjusted easily using environmental stimuli. Yet, the stimulus-triggered shape evolution of organic microspheres in aqueous solution has rarely been reported so far. Here, a novel type of poly(allylamine hydrochloride)-g-porphyrin microspheres (PAH-g-Por MPs) was prepared by a Schiff base reaction between 2-formyl-5,10,15,20-tetraphenylporphyrin (Por-CHO) and PAH doped in 3.5-μm CaCO3 microparticles, followed by template removal. The PAH-g-Por MPs had an average diameter of 2.5 μm and could be transformed into one-dimensional nanorods (NRs) and wormlike nanostructures (WSs) after being incubated for different times in pH 1-4 HCl solutions. The rate and degree of hydrolysis had a significant effect on the formation and morphologies of the nanorods. The NRs@pH1, NRs@pH2, and NRs@pH3 were all composed of the released Por-CHO and the unhydrolyzed PAH-g-Por because of the incomplete hydrolysis of the Schiff base. However, the WSs@pH4 were formed by a pure physical shape transformation, because they had the same composition as the PAH-g-Por MPs and the Schiff base bonds were not hydrolyzed. The self-assembled NRs and WSs exhibited good colloidal stability and could emit stable red fluorescence over a relatively long period of time.
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Affiliation(s)
- Wenbo Zhang
- †MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lingbo Xing
- †MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Haisheng Wang
- †MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiujun Liu
- ‡School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yaqing Feng
- ‡School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Changyou Gao
- †MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Yang L, Jiang L, Yao W, Liu J, Han J. Real-time analysis of porphyrin J-aggregation on a plant-esterase-functionalized surface using quartz crystal microbalance with dissipation monitoring. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9962-9971. [PMID: 25062327 DOI: 10.1021/la501986e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The J-aggregation of meso-tetra (4-sulfonatophenyl) porphine (TPPS4) on a plant-esterase-functionalized surface in a 1:1 v/v mixture of 0.05 M HCl/ethanol (pH ∼1.38) was analyzed in real time using a quartz crystal microbalance with dissipation monitoring (QCM-D). Simultaneous changes in frequency (Δf) and energy dissipation (ΔD) correlated well with mass and structural changes during the sequential phases of slow nucleation, rapid aggregation, and equilibration in J-aggregation. The time-dependent mass adsorption could be quantitatively analyzed with a model, which integrated two simple equations obtained when the surface concentration of TPPS4 (Γ(TPPS4)) was below and above the critical aggregation surface concentration (CASC). This study provides a new view for the protein-induced J-aggregation process, which may be helpful for understanding the interactions of self-assembled nanostructures with biomolecules.
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Affiliation(s)
- Limin Yang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao, Shandong 266555, P. R. China
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Cheng M, Qiang X, Du C. Fluorescent detection of coenzyme A by analyte-induced aggregation of a cationic conjugated polymer. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5740-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Rocha Gonsalves AM, Serra AC, Pineiro M. The small stones of Coimbra in the huge tetrapyrrolic chemistry building. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424609000607] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Improvements over the Rothemund classical reaction methods have allowed the development of capacity to obtain a wide range of structures that were earlier unavailable. Performing the reaction in a mixed nitrobenzene/carboxylic acid medium allowed improvements of yield and purity of the porphyrin obtained, and in some cases the control of the oxidation level of the macrocycle. More recently, novel microwave synthetic methodologies were exploited to achieve important improvements in simple porphyrin chemistry. Tidy sulphonations of simple porphyrins opened the way to diverse desired, inexpensive structures in a very simple manner. The option to concentrate interests on improvements of synthetic methods to obtain simple and diversified tetrapyrrolic structures proved to be advantageous. Interesting biomimetic oxidation and photooxidation systems and PDT sensitizers were developed and significant knowledge was achieved in these specific and related areas. This review presents a view of our own results in the synthetic area, and outlines the contributions therefrom to the study of biomimetic and therapeutic processes.
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Affiliation(s)
| | - Arménio C. Serra
- Departamento de Química, Universidade de Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Marta Pineiro
- Departamento de Química, Universidade de Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
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Aggarwal A, Qureshy M, Johnson J, Batteas JD, Drain CM, Samaroo D. Responsive porphyrinoid nanoparticles: development and applications. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424611003422] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The economy of space and materials and the continuously increasing demand for advanced functionalities for diverse technologies requires the development of new synthetic methods. Many nanomaterials have enhanced photophysical and photochemical properties in solutions and/or on surfaces, while others have enhanced chemical properties, compared to the atomic, molecular, or bulk phases. Nanomaterials have a wide range of applications in catalysis, sensors, photonic devices, drug delivery, and as therapeutics for treatment of a variety of diseases. Inorganic nanoparticles are widely studied, but the formation of organic nanomaterials via supramolecular chemistry is more recent, and porphyrinoids are at the forefront of this research because of their optical, chemical, and structural properties. The formation of nanoscaled materials via self-assembly and/or self-organization of molecular subunits is an attractive approach because of reduced energy requirements, simpler molecular subunits, and the material can be adaptive to environmental changes. The presence of biocompatible groups such as peptides, carbohydrates, polyglycols and mixtures of these on the periphery of the porphyrin macrocycle may make nanoparticles suitable for therapeutics. This perspective focuses on responsive, non-crystalline porphyrinoid nanomaterials that are less than about 100 nm in all dimensions and used for catalytic or therapeutic applications.
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Affiliation(s)
- Amit Aggarwal
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA
| | - Meroz Qureshy
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA
| | - Jason Johnson
- Department of Chemistry, New York City College of Technology of the City University of New York, 300 Jay Street, Brooklyn, NY 11201, USA
| | - James D. Batteas
- Department of Chemistry, Texas A & M University, College Station, TX 77842, USA
| | - Charles Michael Drain
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065, USA
- The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA
| | - Diana Samaroo
- Department of Chemistry, New York City College of Technology of the City University of New York, 300 Jay Street, Brooklyn, NY 11201, USA
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Costa SM, Andrade SM, Togashi DM, Paulo PM, Laia CA, Isabel Viseu M, Gonçalves da Silva AM. Optical spectroscopy and photochemistry of porphyrins and phthalocyanines. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424609000589] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Studies of excited singlet and triplet states of porphyrins and phthalocyanines in organized media of reverse micelles, vesicles, monolayers, and Langmuir-Blodgett films along with more complex supramolecular organizates with proteins and dendrimers, are reported. Self-assembly in these systems was followed by imaging and temporal fluorescence techniques.
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Affiliation(s)
- Sílvia M.B. Costa
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - Suzana M. Andrade
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - Denísio M. Togashi
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - Pedro M.R. Paulo
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - César A.T. Laia
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - M. Isabel Viseu
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - Amélia M. Gonçalves da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
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9
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Wang F, Ding K, Wu F. Red-Emitting Polymer Microspheres Containing Zinc Porphyrins. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Ding K, Wang F, Wu F. The formation of a slipped cofacial dimer of zinc (II) tripyridylporphyrin in water-soluble polymer. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Togashi DM, Ryder AG. Assessing protein–surface interactions with a series of multi-labeled BSA using fluorescence lifetime microscopy and Förster Energy Resonance Transfer. Biophys Chem 2010; 152:55-64. [DOI: 10.1016/j.bpc.2010.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 07/13/2010] [Accepted: 07/28/2010] [Indexed: 11/24/2022]
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12
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Gutierrez JA, Falcone RD, Silber JJ, Correa NM. Role of the medium on the C343 inter/intramolecular hydrogen bond interactions. An absorption, emission, and 1HNMR investigation of C343 in benzene/n-heptane mixtures. J Phys Chem A 2010; 114:7326-30. [PMID: 20565101 DOI: 10.1021/jp102136e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
C343, a common molecular probe utilized in solvation dynamics experiments, was studied in homogeneous media. Absorption, emission, and (1)HNMR spectroscopies were used to investigate the behavior of C343 in benzene and in benzene/n-heptane mixtures. We demonstrate the implications of the medium polarity, measured as the Kamlet-Taft polarity-polarizability (pi*) parameter, in the C343 inter/intramolecular hydrogen bond (H-bond) interactions and the role that this interaction plays in the dimerization process of the dye. In pure benzene, the dimer prevails because the intermolecular H-bond interaction is favored. On the other hand, as the n-heptane content increases the intramolecular H-bond is the strongest and the C343 monomer is favored. As the polarity of the medium decreases, the solvophobic interaction makes that C343 monomer species experiences a more complicated aggregation process beyond the simple monomer dimer equilibrium present in pure benzene. Thus, the addition of n-heptane to the mixture yields a C343 higher-order aggregates species. Thus, our work reveals the importance that the medium has on the behavior of a widespread dye used as chromophore for very different systems such as homogeneous and microheterogenous media. This is very important since the use of chromophores without understanding its chemistry can induce artifacts into the interpretation of solvation dynamics in heterogeneous environments, in particular, those provided by biological systems such as proteins. Considerable care in choosing and characterizing the system is required to analyze the results fully.
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Affiliation(s)
- Jorge A Gutierrez
- Department of Chemistry, National University of Rio Cuarto, Postal Agency #3, X5804BYA Río Cuarto, Argentina
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Moyano F, Quintana SS, Falcone RD, Silber JJ, Correa NM. Characterization of Multifunctional Reverse Micelles’ Interfaces Using Hemicyanines as Molecular Probes. I. Effect of the Hemicyanines’ Structure. J Phys Chem B 2009; 113:4284-92. [DOI: 10.1021/jp8105502] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Fernando Moyano
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, (X5804ZAB) Río Cuarto, Argentina
| | - Silvina S. Quintana
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, (X5804ZAB) Río Cuarto, Argentina
| | - R. Dario Falcone
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, (X5804ZAB) Río Cuarto, Argentina
| | - Juana J. Silber
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, (X5804ZAB) Río Cuarto, Argentina
| | - N. Mariano Correa
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, (X5804ZAB) Río Cuarto, Argentina
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14
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Huang CZ, Chen SF. Quantitation and Differentiation of Bioparticles Based on the Measurements of Light-Scattering Signals with a Common Spectrofluorometer. J Phys Chem B 2008; 112:11785-93. [DOI: 10.1021/jp802895b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cheng Zhi Huang
- College of Chemistry and Chemical Engineering, MOE Key Laboratory for Luminescence and Real-Time Analysis, CQKL-LTRA, Southwest University, Chongqing 400715, China
| | - Shao Fen Chen
- College of Chemistry and Chemical Engineering, MOE Key Laboratory for Luminescence and Real-Time Analysis, CQKL-LTRA, Southwest University, Chongqing 400715, China
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Zhang X, Sasaki K, Kuroda Y. Characterization of Magnesium Porphyrins and Aggregation of Porphyrins in Organic Solvent. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.536] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Gryko DT, Piechowska J, Jaworski JS, Gałęzowski M, Tasior M, Cembor M, Butenschön H. Synthesis and properties of directly linked corrole–ferrocene systems. NEW J CHEM 2007. [DOI: 10.1039/b618631a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Ingrosso C, Petrella A, Cosma P, Curri ML, Striccoli M, Agostiano A. Hybrid Junctions of Zinc(II) and Magnesium(II) Phthalocyanine with Wide-Band-Gap Semiconductor Nano-oxides: Spectroscopic and Photoelectrochemical Characterization. J Phys Chem B 2006; 110:24424-32. [PMID: 17134197 DOI: 10.1021/jp064756h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The optical properties of zinc phthalocyanine (ZnIIPc) and magnesium phthalocyanine (MgIIPc) in DMSO and DMF solutions have been extensively investigated, and the photoelectrochemical behaviors of layer-by-layer hybrid junctions formed of the two metallo(II) phthalocyanines (MIIPcs) and wide-band-gap colloidal semiconductors, namely, ZnO and TiO2 nanocrystals (NCs), have been probed. Different experimental conditions, such as the Pc center metal ion, dye concentration, and solvent identity, were investigated in order to elucidate their effects on the photoelectrochemical performances of the prepared heterojunctions. Finally, thermal treatment of either dye and NC films and control of the NC shape and surface chemistry were also studied and, interestingly, were found to be critical in affecting the performance of photochemical sensitization processes, occurring at the dye/oxide and oxide/solution interfaces.
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Affiliation(s)
- Chiara Ingrosso
- Dipartimento di Chimica, Università di Bari, via Orabona 4, I-70126 Bari, Italy
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Guo L. A novel pH-controlled transfer process of 5,10,15-tri(4-hydroxyphenyl)-20-(4-hexadecyloxyphenyl) porphyrin in CTAB micelles. J Colloid Interface Sci 2006; 302:620-4. [PMID: 16876185 DOI: 10.1016/j.jcis.2006.06.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2006] [Revised: 06/24/2006] [Accepted: 06/27/2006] [Indexed: 10/24/2022]
Abstract
By analysis of the UV-visible and fluorescence spectra of 5,10,15-tri(4-hydroxyphenyl)-20-(4-hexadecyloxyphenyl)porphyrin (P) in different microenvironments of micelle and solvent solutions, a novel pH-controlled transfer process of P in CTAB micelle was reported. In neutral CTAB micelles, porphyrins may locate at the inner layers of micelles. With pH increases to 11.19, the porphyrin can be completely deprotonated and transfers to the outer surface of CTAB micelle. The investigation of kinetics of porphyrin complexing with Cu(II) indicates that the metallation rate of porphyrins in CTAB micelles could also be controlled by changing pH.
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Affiliation(s)
- Lin Guo
- Key Laboratory of Mesoscopic Chemistry of MOE and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China.
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Correa NM, Levinger NE. What Can You Learn from a Molecular Probe? New Insights on the Behavior of C343 in Homogeneous Solutions and AOT Reverse Micelles. J Phys Chem B 2006; 110:13050-61. [PMID: 16805613 DOI: 10.1021/jp0572636] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The behavior of C343, a common molecular probe utilized in solvation dynamics experiments, was studied in homogeneous media and in aqueous and nonaqueous reverse micelles (RMs). In homogeneous media, the Kamlet and Taft solvatochromic comparison method quantified solute-solvent interactions from the absorption and emission bands showing that the solvatochromic behavior of the dye depends not only on the polarity of the medium but also on the hydrogen-bonding properties of the solvent. Specifically, in the ground state the molecule displays a bathochromic shift with the polarity polarizability (pi) and the H-bond acceptor (beta) ability of the solvents and a hypsochromic shift with the hydrogen donor ability (alpha) of the media. The carboxylic acid group causes C343 to display greater sensitivity to the beta than to the pi polarity parameter; this sensitivity increases in the excited state, while the dependence on alpha vanishes. This demonstrates that C343 forms a stable H-bond complex with solvents with high H-bond acceptor ability (high beta) and low H-bond donor character (low alpha). Spectroscopy in nonpolar solvents reveals J-aggregate formation. With information from the Kamlet-Taft analysis, C343 was used to explore RMs composed of water or polar solvents/sodium 1,4-bis-2-ethylhexylsulfosuccinate (AOT)/isooctane using absorption, emission, and time-resolved spectroscopies. Sequestered polar solvents included ethylene glycol (EG), formamide (FA), N,N-dimethylformamide (DMF), and N,N-dimethylacetamide (DMA). Dissolved in the AOT RM systems at low concentration, C343 exists as a monomer, and when introduced to the RM samples in its protonated form, C343 remains protonated driving it to reside in the interface rather than the water pool. The solvathochromic behavior of the dye depends the specific polar solvent encapsulated in the RMs, revealing different types of interactions between the solvents and the surfactant. EG and water H-bond with the AOT sulfonate group destroying their bulk H-bonded structures. While water remains well segregated from the nonpolar regions, EG appears to penetrate into the oil side of the interface. In aqueous AOT RMs, C343 interacts with neither the sulfonate group nor the water, perhaps because of intramolecular H-bonding in the dye. DMF and DMA interact primarily through dipole-dipole forces, and the strong interactions with AOT sodium counterions destroy their bulk structure. FA also interacts with the Na+ counterions but retains its H-bond network present in bulk solvent. Surprisingly, FA appears to be the only polar solvent other than water forming a "polar-solvent pool" with macroscopic properties similar to the bulk.
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Affiliation(s)
- N Mariano Correa
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, USA.
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Badr IHA, Meyerhoff ME. Fluoride-selective optical sensor based on aluminum(III)-octaethylporphyrin in thin polymeric film: further characterization and practical application. Anal Chem 2006; 77:6719-28. [PMID: 16223262 PMCID: PMC2546528 DOI: 10.1021/ac050987t] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
More detailed analytical studies of a new fluoride-selective optical sensor based on the use of aluminum(III)-octaethylporphyrin and a lipophilic pH indicator (4',5'-dibromofluorescein octadecyl ester; ETH-7075) within a thin plasticized poly(vinyl chloride) film are reported. The sensor exhibits extraordinary optical selectivity for fluoride over a wide range of other anions, including anions with far more positive free energies of hydration (e.g., perchlorate, thiocyanate, nitrate, etc.). UV-visible spectrophotometric studies of the sensing films indicate that fluoride interacts with the Al(III) center of the porphyrin structure, yielding both a change in the Soret band lambda(max) of the porphyrin and a change in the protonation state of the pH indicator within the film. The same change in spectral properties of the metalloporphyrin occurs in the absence of added pH indicator or with added tetraphenylborate derivative anionic sites, but optical responses to fluoride in these cases are shown to be irreversible. The presence of the pH indicator and the simultaneous fluoride/proton coextraction equilibrium chemistry is shown to greatly enhance the reversibility of fluoride binding to the Al(III) porphyrin. Optical response toward fluoride can be observed in the range of 0.1 microM-1.6 mM. Optical selectivity coefficients of <10(-6) for common anions (e.g., sulfate, chloride, nitrate, etc.) and <10(-4) for perchlorate and thiocyanate are obtained. Measurements of fluoride in drinking water via the new optical sensor are shown to correlate well with values obtained for the same samples using a classical LaF3-based fluoride ion-selective electrode method.
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Affiliation(s)
| | - Mark E. Meyerhoff
- To whom correspondence should be addressed at E-mail: ; phone: (734) 763-5916; fax: (734) 647-4865
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Andrade SM, Teixeira C, Togashi DM, Costa SM, Sobral AJ. Self-association of free base porphyrins with aminoacid substituents in AOT reverse micelles. J Photochem Photobiol A Chem 2006. [DOI: 10.1016/j.jphotochem.2005.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Andrade SM, Costa SMB. Spectroscopic Studies of Water-Soluble Porphyrins with Protein Encapsulated in Bis(2-ethylhexyl)sulfosuccinate (AOT) Reverse Micelles: Aggregation versus Complexation. Chemistry 2006; 12:1046-57. [PMID: 16250056 DOI: 10.1002/chem.200500047] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We have investigated the interaction of two water-soluble free-base porphyrins (negatively charged meso-tetrakis(p-sulfonatophenyl)porphyrin sodium salt (TSPP) and positively charged meso-tetrakis(N-methylpyridinium-4-yl)porphyrin (TMpyP)) with two drug-carrier proteins (human serum albumin (HSA) and beta-lactoglobulin (betaLG)) in bis(2-ethylhexyl)sulfosuccinate (AOT)/isooctane/water reverse micelles (RM) by using steady-state and transient-state fluorescence spectroscopy. TSPP exhibited a complex pattern of aggregation on varying the RM size and pH in the absence of the protein: at low omega0 (the ratio of water concentration to AOT concentration, the emission of H-aggregates prevails under acidic or neutral "pH(ext)" conditions. Upon formation of the water-pool, J-aggregates and monomeric diacid species dominate at low "pH(ext)" but only monomer is detected at neutral "pH(ext)". The aggregation number increases with omega0 and the presence of the protein does not seem to contribute to further growth of the aggregate. The presence of protein leads to H-deaggregation but promotes J-aggregation up to a certain protein/porphyrin ratio above which, complexation with the monomer bound to a hydrophobic site of the protein prevails. The effective complex binding constants are smaller than in free aqueous solution; this indicates a weaker binding in these RM probably due to some conformational changes imposed by encapsulation. Only a weak quenching of TMpyP fluorescence is detected due to the presence of protein in contrast to the negative porphyrin.
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Affiliation(s)
- Suzana M Andrade
- Centro de Química Estrutural, Complexo 1, Instituto Superior Técnico, 1049-001 Lisboa, Portugal.
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Drain CM, Smeureanu G, Patel S, Gong X, Garno J, Arijeloye J. Porphyrin nanoparticles as supramolecular systems. NEW J CHEM 2006. [DOI: 10.1039/b607289e] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Togashi DM, Romão RIS, Gonçalves da Silva AM, Sobral AJFN, Costa SMB. Self-organization of a sulfonamido-porphyrin in Langmuir monolayers and Langmuir-Blodgett films. Phys Chem Chem Phys 2005; 7:3874-83. [PMID: 16358039 DOI: 10.1039/b506442b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Langmuir monolayers (LM) and Langmuir-Blodgett (LB) films of pure lipophilic meso-tetra(4-dodecylaminosulfophenyl)porphyrin (PC12) and mixed with the anionic surfactant sodium hexadecylsulfate (SHS) were studied. The molecular packing and structure of PC12 and PC12-4SHS with variable surface pressure were investigated by surface pressure-area measurements, steady-state absorption, fluorescence emission and anisotropy, as well as by fluorescence lifetime imaging microscopy (FLIM). At low surface pressure, the porphyrin molecules are organized with the rings tilted on the water surface whereas at high surface pressure the porphyrin rings achieve a more perpendicular arrangement. Using the FLIM images a gradual change of aggregates into large "islands" is observed. Different patterns are observed in the pure PC12 multilayer films (n = 3 and 5) with ordered patches superimposed which are not observed in the PC12-4SHS multilayer LB films.
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Affiliation(s)
- Denisio M Togashi
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, 1049-001, Lisbon, Portugal.
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Togashi DM, Costa SMB, Sobral AJFN. Lipophilic porphyrin microparticles induced by AOT reverse micelles: a fluorescence lifetime imaging study. Biophys Chem 2005; 119:121-6. [PMID: 16154681 DOI: 10.1016/j.bpc.2005.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2005] [Revised: 08/16/2005] [Accepted: 08/17/2005] [Indexed: 12/21/2022]
Abstract
Fluorescence Lifetime Imaging Microscopy (FLIM) technique was applied to investigate the fluorescence dynamics and structural features of large colloidal aggregates of meso-tetra(N-dodecyl-4-amino sulfonyl-phenyl)porphyrin (PC12) induced by Sodium 1,4-bis(2-ethyl hexyl)sulfosuccinate (AOT) reverse micelles. The aggregate's particle sizes (down to 1 microm) obtained from the confocal fluorescence images matched with the particle sizes measured in the images obtained from Scanning Electron Microscopy (SEM). The fluorescence decays for those aggregates in the micro spatial domain show triexponential fluorescence lifetimes (tau1 approximately 12 ns, tau2 approximately 3 ns and tau3 approximately 1 ns) which are independent of the aggregate's size.
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Affiliation(s)
- Denisio M Togashi
- Centro de Química Estrutural, Complexo I-Instituto Superior Técnico, 1049-001 Lisboa, Portugal
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Castriciano MA, Romeo A, Villari V, Angelini N, Micali N, Scolaro LM. Aggregation Behavior of Tetrakis(4-sulfonatophenyl)porphyrin in AOT/Water/Decane Microemulsions. J Phys Chem B 2005; 109:12086-92. [PMID: 16852491 DOI: 10.1021/jp0508960] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AOT/water/decane microemulsions have been used to entrap the water-soluble 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS4). Quasi-elastic light scattering technique has confirmed the confinement of the porphyrin and its various aggregates into the inner water pool. Various species have been detected as function of the size of the microemulsions, concentration of the porphyrin, pH, and aging of the solutions by using a combination of UV-vis absorption, steady fluorescence emission, fluorescence lifetime measurements, and time-resolved fluorescence anisotropy. Under neutral pH conditions, the porphyrin is present as the free base monomer (S414) in the inner water compartment, and it is free to rotate when the size of the droplet is large enough and the porphyrin concentration is low. On increasing the concentration and/or decreasing the microemulsion size, a H-dimer of the free base (S406) is prevalently formed. Aging both the S414 and S406 species leads to the formation of a new species (S424), which has been postulated as a H-type dimer of the diacid porphyrin. On decreasing the pH, the species S414 and S406 almost instantaneously convert into the diacid porphyrin, which is monomeric (S434). This latter is an intermediate in the eventual formation of J-aggregated TPPS4 (S490). A marked stability has been observed for the S424 species, which do not interconvert on changing the pH of the bulk aqueous phase.
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Affiliation(s)
- Maria Angela Castriciano
- Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Università di Messina, Salita Sperone 31, 98166 Vill. S. Agata, Messina, Italy
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Koszarna B, Butenschön H, Gryko DT. The synthesis and properties of bis-1,1′-(porphyrinyl)ferrocenes. Org Biomol Chem 2005; 3:2640-5. [PMID: 15999199 DOI: 10.1039/b505366h] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferrocene-bridged bisporphyrins have been synthesized by the condensation of corresponding dipyrromethane-derived diols with a bisdipyrromethane. Purification of the final compounds has been achieved without chromatography. The specific geometry of these bisporphyrins makes them valuable starting points for building complex molecular and supramolecular structures. In particular it provides a core to which multiple sites of attractive intermolecular interactions can be attached thereby creating compounds predisposed to form complex networks by association. We have studied the structure of bis-1,1'-(porphyrinyl)ferrocenes by 1H NMR, UV-Vis and electrochemistry. Results have shown that complex dynamic processes occur in these molecules (which may involve conformers, formation of H-aggregates and tautomers) and that they have non-typical electrochemical behaviour.
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Affiliation(s)
- Beata Koszarna
- Institute of Organic Chemistry of the Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
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