Academic literature on the topic 'Porphyrins and derivates'

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Journal articles on the topic "Porphyrins and derivates"

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Chahal, Mandeep K., Nadiia Velychkivska, Whitney A. Webre та ін. "Increasing the complexity of oxoporphyrinogen colorimetric sensing chromophores: N-alkylation and β-substitution". Journal of Porphyrins and Phthalocyanines 23, № 11n12 (2019): 1184–94. http://dx.doi.org/10.1142/s1088424619501463.

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Meso-5,10,15,20-tetrakis-3,5-di-tert-butyl-4-oxocyclohexadienylideneporphyrinogen, OxP, is a versatile, highly colored chromophore derived from meso-5,10,15,20-tetrakis(3,5-di-tert-butyl-4-hydroxyphenyl)porphyrin. It exhibits a wide range of chromogenic responses to solvents (solvatochromism), anions and acidic media (halochromism) making it potentially useful as an analytical reagent. The chromogenic responses of OxP can be modulated by varying its chemical structure, and this is reviewed here based on the introduction of substituents at central nitrogen atoms or pyrrolic [Formula: see text]-
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Egemen, Gamze, Mustafa Hayvalı, Zeynel Kılıç, A. Osman Solak, and Zafer Üstündağ. "Phosphorus-nitrogen compounds Part 17: The synthesis, spectral and electrochemical investigations of porphyrino-phosphazenes." Journal of Porphyrins and Phthalocyanines 14, no. 03 (2010): 227–34. http://dx.doi.org/10.1142/s1088424610001945.

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The reactions of unsymmetrical porphyrins (1 and 2) with Ni(OAc)2·4H2O in boiling DMF produce porphyrin complexes (3 and 4). From the reactions of free porphyrin ligands 1 and 2 with hexachlorocyclotriphosphazatriene, N3P3Cl6 , the new free porphyrino-phosphazene derivatives (5 and 6) are obtained. On the other hand, the reactions of N3P3Cl6 with porphyrin complexes (3 and 4) afford the new porphyrino-phosphazene complexes (7 and 8). In the literature there are a few examples of the porphyrino-phosphazene architectures. The structural investigations of all the compounds have been made by eleme
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Mohd Radzuan, Nuur Haziqah, Zaitun Ghazali, Nurul Izzaty Hassan, Mohd Bakri Bakar, Siti Aishah Hasbullah, and Muntaz Abu Bakar. "Synthesis and Characterization of 5,15 A2-Type Porphyrin, Metalloporphyrin and Preliminary Study on Carbon Dioxide Adsorption." Sains Malaysiana 54, no. 6 (2025): 1535–49. https://doi.org/10.17576/jsm-2025-5406-09.

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Porphyrins are among the most extensively studied compounds in chemistry due to their remarkable stability, optical, and photophysical properties. In recent years, advancements in their diverse applications have driven the exploration of porphyrins with different functional groups, allowing for more specific applications. Nowadays, a greater focus is being placed on the development of materials for capturing and converting carbon dioxide (CO2) into value-added products. Despite their promising features, the application of porphyrins in carbon dioxide adsorption has been hindered by their initi
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Ringot, Cyril, Naima Saad, Robert Granet, Philippe Bressollier, Vincent Sol, and Pierre Krausz. "Meso-functionalized aminoporphyrins as efficient agents for photo-antibacterial surfaces." Journal of Porphyrins and Phthalocyanines 14, no. 11 (2010): 925–31. http://dx.doi.org/10.1142/s1088424610002719.

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Anionic, neutral and cationic amino porphyrins were synthesized as precursors of photodynamic antimicrobial agents with an aim to functionalize cotton surface through 1,3,5-triazine link. Structures of porphyrin-triazine derivatives were characterized by 1H NMR, MS and UV-vis confirming the feasibility of this novel concept. Porphyrinic cotton fabrics have been developed from these derivatives, and tested in vitro against Staphylococcus aureus. These novel photodynamic surfaces showed strong and varied antimicrobial activity.
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Wenceslau, Adriana C., Guilherme L. Q. C. Ferreira, Noboru Hioka, and Wilker Caetano. "Spectroscopic studies of pyridil and methoxyphenyl porphyrins in homogeneous and Pluronic®-based nanostructured systems." Journal of Porphyrins and Phthalocyanines 19, no. 11 (2015): 1168–76. http://dx.doi.org/10.1142/s1088424615500996.

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Spectroscopic properties of Porphyrins TPyP (tetra(4-pyridil)porphyrin), TMPP (tetrakis(4-methoxypheny) porphyrin) and its zinc metaled derivatives porphyrins Zn-TPyP and Zn-TMPP respectively, were studied in homogeneous and micro heterogeneous systems, comprising nanostructured Pluronic® copolymeric micellar systems, as a promising drug delivery systems for the porphyrins investigated. Physico-chemical properties such as, hydrophobicity degree, self- aggregation in solvents of different polarities and water/ethanol mixtures (monofasic binary), as well as kinetics profile and isotherm binding,
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Stölzel, Ulrich, Thomas Stauch, and Ilja Kubisch. "Porphyrien." Der Internist 62, no. 9 (2021): 937–51. http://dx.doi.org/10.1007/s00108-021-01066-1.

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ZusammenfassungPorphyrien werden durch Enzymdefekte der Hämbiosynthese hervorgerufen und anhand spezifischer biochemischer Muster von Porphyrinen und deren Vorläufern in Urin, Stuhl und Blut diagnostiziert. Das jeweilige Muster der akkumulierten Porphyrine, Vorläufer und Derivate ist verbunden mit der klinischen Ausprägung, die abdominale, neurologische, psychiatrische, endokrine, kardiovaskuläre Symptome, Leberschaden und/oder Lichtempfindlichkeit der Haut umfassen kann. Klinisch werden akute und nichtakute Porphyrien unterschieden. Bei symptomatischen (klinisch aktiven), akuten hepatischen P
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Ol’shevskaya, Valentina A., Viktoriya M. Alpatova, Nadejda V. Konovalova, Elena G. Kononova, Evgeny G. Rys, and Natalya A. Bragina. "Fluorinated derivatives of meso-(aminophenyl)porphyrins: Synthesis and some transformation." Journal of Porphyrins and Phthalocyanines 22, no. 11 (2018): 989–96. http://dx.doi.org/10.1142/s1088424618500967.

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Condensation of amino groups in 5-(4-aminophenyl)-10,15,20-triphenylporphyrin and 5,10,15,20-tetrakis(4-aminophenyl)porphyrin with pentafluorobenzaldehyde resulted in corresponding Schiff bases and was shown to be a convenient route for the preparation of fluorinated porphyrin derivatives. Compounds thus obtained were easily transformed into the corresponding amines using sodium borohydride. Fluorinated carboranyl porphyrins were prepared via the nucleophilic substitution of the para-fluorine atom of pentafluorophenyl-substituted amine porphyrin derivatives with carborane S-nucleophiles. The a
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Dinache, Andra, Simona Nistorescu, Tatiana Tozar, et al. "Spectroscopic Investigations of Porphyrin-TiO2 Nanoparticles Complexes." Molecules 28, no. 1 (2022): 318. http://dx.doi.org/10.3390/molecules28010318.

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This study presents the spectral characterization of TiO2 nanoparticles (NPs) functionalized with three porphyrin derivatives: 5,10,15,20-(Tetra-4-aminophenyl) porphyrin (TAPP), 5,10,15,20-(Tetra-4-methoxyphenyl) porphyrin (TMPP), and 5,10,15,20-(Tetra-4-carboxyphenyl) porphyrin (TCPP). UV-Vis absorption and Fourier transform infrared spectroscopy–attenuated total reflection (FTIR-ATR) spectroscopic studies of these porphyrins and their complexes with TiO2 NPs were performed. In addition, the efficiency of singlet oxygen generation, the key species in photodynamic therapy, was investigated. UV
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Sassa, Shigeru. "Novel Effects of Heme Biological Systemst and Heme-related Compounds in Biological Systems." Current Medicinal Chemistry 3, no. 4 (1996): 273–90. http://dx.doi.org/10.2174/092986730304220302112129.

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Abstract: Heme and heme-related compounds such as porphyrins have a variety of biological and clinical activities. This review highlights some of the novel effects of these compounds in medicinal chemistry. Heme which has no photoreactive properties, can serve as the prosthetic group for various hemoproteins, or as a substrate for microsomal heme oxygenase (HO). In contrast, porphyrins have photodynamic activities but usually do not serve as substrates in biological systems. Thus, heme and heme analogues are often used to influence enzyme activities in tissues, while porphyrins by taking advan
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Almeida, José, Maria E. Fortună, Lucia Pricop, et al. "(Aminophenyl)porphyrins as precursors for the synthesis of porphyrin-modified siloxanes." Journal of Porphyrins and Phthalocyanines 23, no. 09 (2019): 1001–12. http://dx.doi.org/10.1142/s1088424619500573.

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The present research reports the efficient synthesis of mono- and di-(aminophenyl)porphyrins and their metalation with Zn(II) using microwave irradiation. The subsequent reaction of amino-functionalized porphyrins with siloxane moieties bearing epoxy or carboxyl functional groups provided four new porphyrin-modified siloxanes. The structure of the resulting derivatives was established by 1H-NMR and MALDI-TOF-MS. The optical properties of the porphyrin chromophores were preserved, as proven by comparing the absorption and emission spectra of the initial porphyrins to those of the porphyrin-modi
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Dissertations / Theses on the topic "Porphyrins and derivates"

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Chauhan, Prashant. "Porphyrin derivatives for functional nanomaterials." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423501.

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The thesis consists of two major research topic i.e. Porphyrin and Nano crystalline cellulose. The porphyrin project started with the production of porphyrin chromophores for dye sensitized solar cells. These derivatives were required as references for an ongoing project of the research group that hosted me. In addition, some porphyrin-porphyrin tweezers were prepared using a one pot synthetic methodology developed in our lab, based on the use of trichloro triazine as a linker. These derivatives were necessary for collaboration with Professor Nina Berova at Columbia University that studies
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Cunsolo, Alessandra. "Porphyrin derivatives as versatile proteasome modulators." Doctoral thesis, Università di Catania, 2017. http://hdl.handle.net/10761/3828.

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The ubiquitin proteasome system (UPS) is the primary degradation system in eukaryotic cells, with high selectivity for a myriad of soluble proteins, and perturbations in the UPS are associated with numerous human disorders. For this reason the proteasome has become a pharmacological target for cancer and neurodegenerative diseases where opposite effects are desirable, inhibition and activation respectively. Interestingly, accumulation of the ubiquitin-conjugated proteins, which have been tagged for degradation, but not efficiently degraded have been observed at advanced age in many tissues. Si
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Lubian, Elisa. "Porphyrin Derivatives as Optical Molecular Sensors." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427495.

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In this Doctorate Thesis project, a small library of four structurally related melamine-bridge bis(porphyrin-ZnII) receptors, was synthesized The coordination properties of these porphyrin derivatives has been investigated by UV-vis spectroscopy for a series of aliphatic diamines of general formula H2N (CH2)n NH2 (n = 4-8). A marked colour variation occours due to a favourable host-guest ditopic interaction. The binding constants, higher than 10e7 M-1, make these receptors excellent candidates for the development of sensor devices for continuous flow analyses, in which the porphyrin derivativ
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Gangemi, Chiara Maria Antonietta. "Synthesis and use of new Porphyrin Derivatives." Doctoral thesis, Università di Catania, 2016. http://hdl.handle.net/10761/3883.

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The Ph.D work was aimed to design, synthesize, and test capabilities of new spermine-porphyrin and BODIPY derivatives, and to study their interactions with various biological targets. The research period was focused on the synthesis of porphyrin derivatives with a different number of spermine pendants, in order to combine the hydrophobic and hydrophilic behaviour in a single molecule with the possibility to modulate the two properties, but meanwhile also to have biocompatible features. In particular, polyamine arms make these compounds quite soluble in aqueous solution and let them to interac
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Hiroto, Satoru. "Exploration of Porphyrin Derivatives with Unique Electronic Structures." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124445.

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Garcia, Vinícius Silveira. "Derivados porfirínicos com potencial aplicação em terapia fotodinâmica. Alterações estruturais." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-24062008-194017/.

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Devido à sua intensa absorção de luz na região visível do espectro, as porfirinas e seus derivados (clorinas e bacterioclorinas) são de grande importância na terapia fotodinâmica (TFD) para o tratamento de doenças neoplásicas. Neste trabalho foram sintetizadas as novas vinil-porfirinas estrategicamente funcionalizadas (47 e 48), seguida de uma sistemática de reações de Diels-Alder com dieófilos ativados, com o propósito de obter clorinas e/ou bacterioclorinas para potenciais aplicações em TFD.<br>Due to their strong absorption in the visible region, porphyrins and related derivatives (chlorins
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Mohamed, Sophie. "Développement de polymères à empreintes moléculaires basé sur une manganoporphyrine utilisé comme catalyseur oxydatif de dérivés soufrés. Vers une nouvelle approche biomimétique de décontamination d'armes chimiques." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR027/document.

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L’impression moléculaire de polymères est une technique utile pour créer des récepteurs artificiels capables de lier sélectivement des substrats. Cette propriété de reconnaissance rend les polymères à empreintes moléculaires particulièrement intéressants pour développer des catalyseurs macromoléculaires. Notre objectif a ainsi été d’accéder à un catalyseur supramoléculaire recyclable et capable d’oxyder des dérivés du soufre dans des conditions hétérogènes en présence d’un oxydant doux et éco-compatible tel que le peroxyde d’hydrogène. Compte-tenu de l’engagement du laboratoire dans la lutte c
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Acharya, Rajendra. "Synthesis, Characterization and Photophysical Studies of Porphyrin and N-Confused Porphyrin Derivatives and Self-assembled Nano-Morphologies." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1376061548.

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Mitevski, Oliver. "New Derivatives and Iron Complexes of the Siamese-Twin Porphyrin." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-002B-7D44-1.

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Gamelas, Sara Raquel Duarte. "Porphyrin derivatives and mRNA alternative splicing induced by photodynamic therapy." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/18633.

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Mestrado em Química<br>Neste trabalho é descrita a síntese de porfirinas regulares e N-confusas com o objetivo da realização de estudos acerca da sua eficiência como fotossensibilizadores (PSs) em terapia fotodinâmica (PDT) e a influência desta no splicing alternativo do mRNA. Os derivados porfirinicos foram preparados tendo como estrutura base a 5,10,15,20-tetraquis(1-metilpiridinio-4-il)porfirina. Inicialmente irá ser realizada uma breve introdução sobre os macrociclos tetrapirrólicos, nomeadamente sobre porfirinas. Segue-se o capítulo 2 onde há a descrição sintética dos derivados porfiríni
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Books on the topic "Porphyrins and derivates"

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Bonifazi, Davide. From solution to surfaces: Synthesis, physical properties, and materials applications of novel fullerene and porphyrin derivatives. 2004.

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Book chapters on the topic "Porphyrins and derivates"

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Grossweiner, Leonard I. "Photodynamic Therapy with Porphyrin Derivatives." In Porphyric Pesticides. American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0559.ch018.

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Matsumura, Akira, Yasushi Shibata, Kunio Nakagawa, et al. "Boron-, Gadolinium-Porphyrin Derivatives for Neutron Capture Therapy." In Cancer Neutron Capture Therapy. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9567-7_36.

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Nakashima, S., A. Negishi, J. Nakamura, and T. Okuda. "Study on porphyrin complex ligated with azaferrocene derivatives." In Hyperfine Interactions (C). Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0281-3_77.

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Wayland, Bradford B. "Rh-C Bond Dissociation Enthalpies for Organometallic Derivatives of Rhodium Porphyrins." In Energetics of Organometallic Species. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2466-9_5.

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Ol'shevskaya, Valentina A., Andrei V. Zaitsev, and Alexander A. Shtil. "Carborane Derivatives of Porphyrins and Chlorins for Photodynamic and Boron Neutron Capture Therapies." In Boron-Based Compounds. John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119275602.ch3.3.

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Yatskou, Mikalai M., Tjeerd J. Schaafsma, Vladimir V. Apanasovich, Rob B. M. Koehorst, Arie van Hoek, and Eugene G. Novikov. "Optical spectroscopy and simulation-based analysis of thin films of zinc porphyrin derivatives." In Spectroscopy of Biological Molecules: New Directions. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_79.

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Bhupathiraju, N. V. S. Dinesh K., and M. Graça H. Vicente. "Synthesis of Carborane-Containing Porphyrin Derivatives for the Boron Neutron Capture Therapy of Tumors." In Topics in Heterocyclic Chemistry. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/7081_2013_111.

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Matsuo, Yutaka, and Keisuke Ogumi. "Chapter 7. Recent Progress in Porphyrin Derivatives Used in Organic Thin-film Solar Cells." In Smart Materials Series. Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839164149-00204.

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Iida, Kouji, Pamela S. Parkes-Loach, Paul A. Loach, and Mamoru Nango. "Molecular Assemblies of Light-Harvesting Polypeptides/Porphyrin Derivatives as an Artificial Model for the Light- Harvesting Polypeptide Complex of Photosynthetic Bacteria." In Photosynthesis: from Light to Biosphere. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0173-5_54.

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Khalil, Gamal. "Porphyrin Optical Sensing: Three Applications." In Characteristics and Chemistry of Dyes [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1010442.

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Porphyrin derivatives play an important role in various applications, including optical chemical sensors. The electronic structure of the inner 16-membered ring in porphyrins, which consists of 18 electrons, governs their key optical features. Different classes of porphyrin molecules provide a diverse range of ring structures and substitutions, which can be effectively utilized to tune or modify specific spectral properties. Additionally, these properties are influenced by chemical modifications or changes in the pyrrole rings. Porphyrin is a highly symmetrical molecule with two pairs of low-e
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Conference papers on the topic "Porphyrins and derivates"

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Agarwala, Vinod S., and Frederick R. Longo. "Corrosion and Physical Studies of Porphyrin-Treated Iron Surfaces." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86198.

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Abstract The Chemical and structural characteristics of porphyrins suggest that this class of molecules should offer protection of metallic surfaces by chemisorption. Therefore we have prepared and tested more than twenty-five different porphyrins and several of their metallo-derivatives. Corrosion and electrochemical studies have shown that the inhibition efficiency of a porphyrin improves (a) with its water-soluble nature, (b) with its conversion to a metalloderivative and (c) when applied by vapor deposition at temperatures above 300 C. Best corrosion inhibition (in 1% NaCl) was shown by te
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Agarwala, V. S., and S. Hettiarachchi. "Porphyrins and Phthalocyanines for Corrosion Inhibition." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90442.

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Abstract The electronic structure and the chemical properties of porphyrin and phthalocyanine molecules suggest that they are capable of strong chemisorption at metallic surfaces. Thus, a number of different porphyrins, phthalocyanines and their metallo- derivatives were synthesized and studied. The corrosion and electrochemical studies showed their excellent potential for corrosion inhibition. The current studies have shown that "tailor-making" the molecules through modification of chemical structure, could transform them into most efficient corrosion inhibitors. The degree of inhibidon impro
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Kushida, Hiromu, and Prof Kosuke Sugawa. "Significant Performance Enhancement of Triplet-Triplet Annihilation Upconversion Systems Based on Strong Light-Matter Interactions." In 6th World Conference on Chemistry and Chemical Engineering and 6th World Conference on Advanced Materials, Nanoscience and Nanotechnology. Eurasia Conferences, 2024. https://doi.org/10.62422/978-81-974314-2-5-005.

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Triplet-triplet annihilation upconversion (TTA-UC) is a technique that converts low-energy light into higher-energy light and has garnered significant attention for its wide range of potential applications. In TTA-UC, porphyrins are commonly used as sensitizer molecules, but the method faces several limitations. These include a narrow excitation wavelength range, restricted by the molecules’ spectroscopic properties, and a low molar absorption coefficient due to weak interactions with light. This study aims to significantly enhance TTA-UC performance by achieving strong interactions between li
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Pratiwi, Rimadani, Slamet I. Surantaatmadja, and Daryono H. Tjahjono. "Complexes Formation of Porphyrin Derivatives with Lead: Preliminary Computational Study of Porphyrin as Analytical Reagent." In 3rd International Conference on Computation for Science and Technology (ICCST-3). Atlantis Press, 2015. http://dx.doi.org/10.2991/iccst-15.2015.4.

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Fujita, Marta Akemi, Carla Marisa Brito Carvalho, Timothy John Brocksom та Kleber Thiago de Oliveira. "Synthesis and photophysical evaluations of β-fused Uracil- Porphyrin derivatives". У 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013912183035.

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Fang Chen, Zhenzhu Hu, and Zhenli Deng. "Study on the interaction between BSA and tetraphenyl-porphyrin derivatives." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5966016.

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Noguchi, Yutaka, Takashi Nagase, Rieko Ueda, Toshiya Kamikado, Tohru Kubota, and Shinro Mashiko. "Fowler-Nordheim Tunneling in Electromigrated Break Junctions with Porphyrin Derivatives." In 2006 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2006. http://dx.doi.org/10.7567/ssdm.2006.d-7-2.

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Gomes, Ana T. P. C., Fernando C. da Silva, Maria G. P. M. S. Neves, Vítor F. Ferreira, and José A. S. Cavaleiro. "Synthesis of new N-confused triazole-porphyrin derivatives through the Heck procedure." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013819125430.

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Kwasny, Miroslaw, Zygmunt Mierczyk, Andrzej Gietka, Alfreda Graczyk, and Janusz Domaniecki. "Localization of porphyrine amino acid derivatives in superficial tumors using laser-induced fluorescence." In Laser Technology V, edited by Wieslaw Wolinski and Alfreda Graczyk. SPIE, 1997. http://dx.doi.org/10.1117/12.292852.

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De Mey, K., K. Clays, Michael J. Therien, David N. Beratan, and Inge Asselberghs. "Analysis of the unusual wavelength dependence of the first hyperpolarizability of porphyrin derivatives." In SPIE Photonic Devices + Applications, edited by Manfred Eich, Jean-Michel Nunzi, Rachel Jakubiak, and Theodore G. Goodson III. SPIE, 2010. http://dx.doi.org/10.1117/12.859819.

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