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Articles de revues sur le sujet « P-type chromophores »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

Lundquist, Knut, Jim Parkås, Magnus Paulsson, and Cyril Heitner. "Reactions of lignin chromophores of the enal and enone type with sulfite." BioResources 2, no. 3 (2007): 334–50. http://dx.doi.org/10.15376/biores.2.4.334-350.

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In NaHSO3-solutions of coniferaldehyde and its methyl ether (models for lignin chromophores of the cinnamaldehyde type) a dynamic equilibrium between the aldehydes and their hydrogen sulfite adducts is set up. A comparatively slow addition of hydrogen sulfite to the double bond leading to 1,3-disulfonic acid derivatives occurs; coniferaldehyde reacts slower than its methyl ether. In Na2SO3-solution both aldehydes are rapidly converted to 1,3-disulfonic acid derivatives. The results suggest that in both NaHSO3-solution and Na2SO3-solution the free cinnamaldehydes and sulfite ion are the reactan

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Lundquist, Knut, Jim Parkås, Magnus Paulsson, and Cyril Heitner. "Reactions of lignin chromophores of the enal and enone type with sulfite." BioResources 2, no. 3 (2007): 334–50. http://dx.doi.org/10.15376/biores.2.3.334-350.

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In NaHSO3-solutions of coniferaldehyde and its methyl ether (models for lignin chromophores of the cinnamaldehyde type) a dynamic equilibrium between the aldehydes and their hydrogen sulfite adducts is set up. A comparatively slow addition of hydrogen sulfite to the double bond leading to 1,3-disulfonic acid derivatives occurs; coniferaldehyde reacts slower than its methyl ether. In Na2SO3-solution both aldehydes are rapidly converted to 1,3-disulfonic acid derivatives. The results suggest that in both NaHSO3-solution and Na2SO3-solution the free cinnamaldehydes and sulfite ion are the reactan

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3

Facchetti, Antonio, Geoffrey R. Hutchison, Shahar Keinan, and Mark A. Ratner. "Control mechanisms for transport and nonlinear optical response in organic materials: a tale of twists and barriers." Inorganica Chimica Acta 357, no. 13 (2004): 3980–90. https://doi.org/10.1016/j.ica.2004.06.061.

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Simple electronic structure models are used to address two significant challenges in organic materials chemistry, the design of chromophores for strong electro-optic response (and low-energy optical absorption), and the prediction of relative mobilities and charge injection barriers for conductive oligomers. For electro-optic response, we examine two chromophore classes where twisting around an inter-ring bond can tune the electronic structure from aromatic (zwitterionic) to quinoid (neutral). The calculated nonlinear response develops a very strong maximum (βμ ∼ 1500 ×10−30 esu) at twist angl

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Fave, Claire, Muriel Hissler, Tamás Kárpáti та ін. "Connecting π-Chromophores by σ-P−P Bonds: New Type of Assemblies Exhibiting σ−π-Conjugation". Journal of the American Chemical Society 126, № 19 (2004): 6058–63. http://dx.doi.org/10.1021/ja0317067.

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Scheer, Hugo, and Hartmut Kayser. "Conformational studies of biliproteins from the insects pieris brassicae and cerura vinula." Zeitschrift für Naturforschung C 43, no. 1-2 (1988): 84–90. http://dx.doi.org/10.1515/znc-1988-1-217.

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Chromophore conformation and protein secondary structure of biliproteins from the butterfly, Pieris brassicae, and the moth, Cerura vinula, have been investigated by absorption, circular dichroism and fluorescence spectroscopy. The chromophore of the P. brassicae protein, biliverdin IXy, has probably a cyclic-helical structure similar to that of free bile pigments of the biliverdin type. Though achiral by structure the chromophore displays strong optical activity in the native protein-bound state, but becomes inactive after urea denaturation of the protein. A minor biliprotein from P. brassica

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Li, Yiting, C. Ed Whittle, Keith A. Walters, Kevin D. Ley та Kirk S. Schanze. "Photophysics of π-conjugated metalorganic oligomers". Pure and Applied Chemistry 73, № 3 (2001): 497–501. http://dx.doi.org/10.1351/pac200173030497.

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The optical absorption and photoluminescence properties of PPE-type p-conjugated oligomers that contain a 2,2-bipyridine-5,5¢-diyl metal coordinating unit have been examined. The spectra of the free oligomers are compared with those that contain Re(CO)3Cl and Ru(bpy)22+ chromophores chelated to the bpy-diyl unit.

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Khalid, Muhammad, Muhammad Usman Khan, Iqra Shafiq та ін. "Structural modulation of π-conjugated linkers in D–π–A dyes based on triphenylamine dicyanovinylene framework to explore the NLO properties". Royal Society Open Science 8, № 8 (2021): 210570. http://dx.doi.org/10.1098/rsos.210570.

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A donor–π–acceptor type series of Triphenylamine–dicyanovinylene-based chromophores ( DPMN1–DPMN11 ) was designed theoretically by the structural tailoring of π-linkers of experimentally synthesized molecules DTTh and DTTz to exploit changes in the optical properties and their nonlinear optical materials (NLO) behaviour. Density functional theory (DFT) computations were employed to understand the electronic structures, absorption spectra, charge transfer phenomena and the influence of these structural modifications on NLO properties. Interestingly, all investigated chromophores exhibited lower

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Matsumoto, Jin, Tsutomu Shiragami, Kazutaka Hirakawa, and Masahide Yasuda. "Water-Solubilization of P(V) and Sb(V) Porphyrins and Their Photobiological Application." International Journal of Photoenergy 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/148964.

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Porphyrins have been widely utilized as biochemical and biological functional chromophores which can operate under visible-light irradiation. Water-soluble porphyrins have been used as the drug for photodynamic therapy (PDT) and photodynamic inactivation (PDI). Although usual water-solubilization of porphyrins has been achieved by an introduction of an ionic group such as ammonium, pyridinium, sulfonate, phosphonium, or carboxyl to porphyrin ring, we proposed the preparation of water-soluble P and Sb porphyrins by modification of axial ligands. Alkyl (type A), ethylenedioxy (type E), pyridiniu

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Zhu, Xinju, Yaru Pan, Xinran Zhao, et al. "Cyano-Substituted Oligo(p-phenylene vinylene) Derivatives with Aggregation-Induced Enhanced Emissions and Mechanofluorochromic Luminescence." Molecules 29, no. 18 (2024): 4447. http://dx.doi.org/10.3390/molecules29184447.

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Developing red fluorescence emitters with simple structures via convenient synthetic routes is highly desirable yet challenging. Herein, two novel donor–acceptor-type red emitters, DCFOPV-TPA and SCFOPV-TPA, featuring the intramolecular charge transfer effect were designed by integrating triphenylamine and trifluoromethyl into a CN-substituted oligo(p-phenylene vinylene) backbone. Both chromophores exhibited aggregation-induced enhanced emission and solvatochromic behavior. Moreover, DCFOPV-TPA also displayed reversible mechanofluorochromic properties under external force.

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Espinoza, Eli Misael, John Anthony Clark, Mimi Karen Billones, et al. "Photophysics and Electrochemistry of Biomimetic Pyranoflavyliums: What Can Bioinspiration from Red Wines Offer." Photochem 2, no. 1 (2022): 9–31. http://dx.doi.org/10.3390/photochem2010003.

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Natural dyes and pigments offer incomparable diversity of structures and functionalities, making them an excellent source of inspiration for the design and development of synthetic chromophores with a myriad of emerging properties. Formed during maturation of red wines, pyranoanthocyanins are electron-deficient cationic pyranoflavylium dyes with broad absorption in the visible spectral region and pronounced chemical and photostability. Herein, we survey the optical and electrochemical properties of synthetic pyranoflavylium dyes functionalized with different electron-donating and electron-with

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Karamshuk, Svitlana, Stefano Caramori, Norberto Manfredi, et al. "Molecular Level Factors Affecting the Efficiency of Organic Chromophores for p-Type Dye Sensitized Solar Cells." Energies 9, no. 1 (2016): 33. http://dx.doi.org/10.3390/en9010033.

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Graziosi, G., C. Preti, G. Tosi, and P. Zannini. "Osmium(III) Halide Complexes with para-and meta-Substituted Benzeneseleninato Ligands." Australian Journal of Chemistry 38, no. 11 (1985): 1675. http://dx.doi.org/10.1071/ch9851675.

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New complexes of osmium(III) with para - and meta-substituted benzeneseleninic acids of the type XC6H4SeO2H (X = H, p- Cl , m- Cl , p-Br, m-Br, p-Me) are reported. The compounds, of the type Os(XC6H4SeO2)3, Os(XC6H4SeO2)2Y, Os(XC6H4SeO2)Y2 and Os2(XC6H4SeO2)3Y3 (Y = Cl , Br), have been studied through spectroscopic techniques ( i.r ., far- i.r .and electronic spectra), magnetic susceptibility measurements, thermogravimetric studies and conductivity measurements. The wavelengths of the principal electronic absorption peaks have been accounted for quantitatively in terms of the crystal-field the

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13

Dai, Yasi, Andrea Zerbini, Juan Casado, and Fabrizia Negri. "Ambipolar Charge Transport in Organic Semiconductors: How Intramolecular Reorganization Energy Is Controlled by Diradical Character." Molecules 28, no. 12 (2023): 4642. http://dx.doi.org/10.3390/molecules28124642.

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The charged forms of π–conjugated chromophores are relevant in the field of organic electronics as charge carriers in optoelectronic devices, but also as energy storage substrates in organic batteries. In this context, intramolecular reorganization energy plays an important role in controlling material efficiency. In this work, we investigate how the diradical character influences the reorganization energies of holes and electrons by considering a library of diradicaloid chromophores. We determine the reorganization energies with the four-point adiabatic potential method using quantum–chemical

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Gasper, Raphael, Julia Schwach, Jana Hartmann та ін. "Distinct Features of Cyanophage-encoded T-type Phycobiliprotein Lyase ΦCpeT". Journal of Biological Chemistry 292, № 8 (2017): 3089–98. http://dx.doi.org/10.1074/jbc.m116.769703.

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Auxiliary metabolic genes (AMG) are commonly found in the genomes of phages that infect cyanobacteria and increase the fitness of the cyanophage. AMGs are often homologs of host genes, and also typically related to photosynthesis. For example, the ΦcpeT gene in the cyanophage P-HM1 encodes a putative phycobiliprotein lyase related to cyanobacterial T-type lyases, which facilitate attachment of linear tetrapyrrole chromophores to Cys-155 of phycobiliprotein β-subunits, suggesting that ΦCpeT may also help assemble light-harvesting phycobiliproteins during infection. To investigate this possibili

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15

Zheng, Qingdong, Sandesh K. Gupta, Guang S. He, Loon-Seng Tan, and Paras N. Prasad. "Synthesis, Characterization, Two-Photon Absorption, and Optical Limiting Properties of Ladder-Type Oligo-p-phenylene-Cored Chromophores." Advanced Functional Materials 18, no. 18 (2008): 2770–79. http://dx.doi.org/10.1002/adfm.200800419.

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Qin, Peng, Joanna Wiberg, Elizabeth A. Gibson, et al. "Synthesis and Mechanistic Studies of Organic Chromophores with Different Energy Levels for p-Type Dye-Sensitized Solar Cells." Journal of Physical Chemistry C 114, no. 10 (2010): 4738–48. http://dx.doi.org/10.1021/jp911091n.

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Sillman, A. J., J. K. Carver, and E. R. Loew. "The photoreceptors and visual pigments in the retina of a boid snake, the ball python (Python regius)." Journal of Experimental Biology 202, no. 14 (1999): 1931–38. http://dx.doi.org/10.1242/jeb.202.14.1931.

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The photoreceptors and visual pigments of Python regius were studied using microspectrophotometry and scanning electron microscopy. The retina contains rods and cones, with rods constituting at least 90 % of the photoreceptor population. The rods are of a single type with long, narrow outer segments and are tightly packed. The wavelength of maximum absorbance (λ max) of the visual pigment in the rods is in the region of 494 nm. Two distinct types of cone are present. The most common cone, with a stout but stubby outer segment, contains a visual pigment with λ max at approximately 551 nm. A rel

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18

Qin, Peng, Mats Linder, Tore Brinck, Gerrit Boschloo, Anders Hagfeldt, and Licheng Sun. "High Incident Photon-to-Current Conversion Efficiency of p-Type Dye-Sensitized Solar Cells Based on NiO and Organic Chromophores." Advanced Materials 21, no. 29 (2009): 2993–96. http://dx.doi.org/10.1002/adma.200802461.

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Sakuda, Eri. "(Invited) Synthesis and Photophysical Properties of Platinum(II) Complexes Having Electron Donor/Acceptor Moieties." ECS Meeting Abstracts MA2022-01, no. 13 (2022): 886. http://dx.doi.org/10.1149/ma2022-0113886mtgabs.

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Boron containing π-electron chromophores represented by tri(9-anthryl)borane show quite unique spectroscopic and photophysical properties, owing to the presence of the vacant p-orbital on the boron atom. In practice, we demonstrated that the excited states of arylborane derivatives were characterized by charge transfer from the π-orbital of the aryl group to the vacant p-orbital on the boron atom: π(Ar) – p(B) CT. If such π(Ar) – p(B) CT interactions are introduced to the MLCT excited state of a transition metal complex, new and novel aspects into photophysics of the metal complexes could be d

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20

Kisel, Kristina S., Vadim A. Baigildin, Anastasia I. Solomatina, et al. "Rhenium(I) Block Copolymers Based on Polyvinylpyrrolidone: A Successful Strategy to Water-Solubility and Biocompatibility." Molecules 28, no. 1 (2023): 348. http://dx.doi.org/10.3390/molecules28010348.

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A series of diphosphine Re(I) complexes Re1–Re4 have been designed via decoration of the archetypal core {Re(CO)2(N^N)} through the installations of the phosphines P0 and P1 bearing the terminal double bond, where N^N = 2,2′-bipyridine (N^N1), 4,4′-di-tert-butyl-2,2′-bipyridine (N^N2) or 2,9-dimethyl-1,10-phenanthroline (N^N3) and P0 = diphenylvinylphosphine, and P1 = 4-(diphenylphosphino)styrene. These complexes were copolymerized with the corresponding N-vinylpyrrolidone-based Macro-RAFT agents of different polymer chain lengths to give water-soluble copolymers of low-molecular p(VP-l-Re) an

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Vullev, Valentine I., Daniel T. Gryko, Katarzyna Rybicka-Jasińska, et al. "Electron-Deficient Metal-Free Organic Conjugates." ECS Meeting Abstracts MA2025-01, no. 17 (2025): 1256. https://doi.org/10.1149/ma2025-01171256mtgabs.

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The advent of carbon electronics and photonics places increasing demands on the diversity of the electronic properties of organic conjugates. In comparison to their inorganic counterparts, majority of organic molecular and supramolecular structures tend to be electron rich, ensuring p-type characteristics of the materials they compose. Conversely, n-type organics are few and far between. With relatively high reduction potentials, the imides and diimides of aromatic hydrocarbons are good candidates for n-type organic materials. Perylene diimides (PDI) some of the most broadly used electron-defi

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Rabbi, Athaya, Fauziah Hayati, and Andri Andri. "Hubungan Merokok dengan Kejadian Penyakit Katarak di Rumah Sakit Pertamedika Ummi Rosnati Banda Aceh." MEDIA KESEHATAN MASYARAKAT INDONESIA 22, no. 4 (2023): 250–55. http://dx.doi.org/10.14710/mkmi.22.4.250-255.

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Latar belakang: Katarak merupakan keadaan di mana terjadi kekeruhan pada lensa. Katarak juga terjadi karena proses multifaktor, seperti faktor intrinsik dan ekstrinsik. Merokok dan mengunyah tembakau dapat menginduksi stres oksidatif dan dihubungkan dengan penurunan kadar antioksidan, askorbat dan karatenoid, sehingga menyebabkan penumpukan molekul berpigmen 3-hydroxihynurine dan chromophores yang menyebabkan terjadinya penguningan warna lensa. Bahan kimia dalam rokok juga menyebabkan karbamilasi dan denaturasi protein pada lensa. Tujuan penelitian ini adalah untuk mengetahui hubungan merokok

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Kavanagh, Maeve A., Joshua K. G. Karlsson, Jonathan D. Colburn, Laura M. C. Barter, and Ian R. Gould. "A TDDFT investigation of the Photosystem II reaction center: Insights into the precursors to charge separation." Proceedings of the National Academy of Sciences 117, no. 33 (2020): 19705–12. http://dx.doi.org/10.1073/pnas.1922158117.

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Photosystem II (PS II) captures solar energy and directs charge separation (CS) across the thylakoid membrane during photosynthesis. The highly oxidizing, charge-separated state generated within its reaction center (RC) drives water oxidation. Spectroscopic studies on PS II RCs are difficult to interpret due to large spectral congestion, necessitating modeling to elucidate key spectral features. Herein, we present results from time-dependent density functional theory (TDDFT) calculations on the largest PS II RC model reported to date. This model explicitly includes six RC chromophores and both

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Geraghty, Paul B., Calvin Lee, Jegadesan Subbiah, et al. "High performance p-type molecular electron donors for OPV applications via alkylthiophene catenation chromophore extension." Beilstein Journal of Organic Chemistry 12 (November 2, 2016): 2298–314. http://dx.doi.org/10.3762/bjoc.12.223.

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The synthesis of key 4-alkyl-substituted 5-(trimethylsilyl)thiophene-2-boronic acid pinacol esters 3 allowed a simplified alkylthiophene catenation process to access bis-, ter-, quater-, and quinquethiophene π-bridges for the synthesis of acceptor–π-bridge-donor– π-bridge-acceptor (A–π-D–π-A) electron donor molecules. Based on the known benzodithiophene-terthiophene-rhodanine (BTR) material, the BXR series of materials, BMR (X = M, monothiophene), BBR (X = B, bithiophene), known BTR (X = T, terthiophene), BQR (X = Q, quaterthiophene), and BPR (X = P(penta), quinquethiophene) were synthesised t

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25

Qin, Peng, Hongjun Zhu, Tomas Edvinsson, Gerrit Boschloo, Anders Hagfeldt, and Licheng Sun. "Design of an Organic Chromophore for P-Type Dye-Sensitized Solar Cells." Journal of the American Chemical Society 130, no. 27 (2008): 8570–71. http://dx.doi.org/10.1021/ja8001474.

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Qin, Peng, Hongjun Zhu, Tomas Edvinsson, Gerrit Boschloo, Anders Hagfeldt, and Licheng Sun. "Design of an Organic Chromophore for P-Type Dye-Sensitized Solar Cells." Journal of the American Chemical Society 130, no. 51 (2008): 17629. http://dx.doi.org/10.1021/ja8087289.

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Jung, Seung Chai, Jeong Yeon Cho, and Seung Hyup Kim. "Subtype differentiation of small renal cell carcinomas on three-phase MDCT: usefulness of the measurement of degree and heterogeneity of enhancement." Acta Radiologica 53, no. 1 (2012): 112–18. http://dx.doi.org/10.1258/ar.2011.110221.

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Background Subtype differentiation of small renal cell carcinomas (RCCs) can provide more information to surgeons and patients and get more useful information about imaging features of small renal tumors. Purpose To evaluate the usefulness of the measurement of degree and heterogeneity of enhancement in subtype differentiation of small renal cell carcinomas (RCCs) by three-phase multidetector-row CT (MDCT). Material and Methods We reviewed 149 pathologically confirmed small (<4cm) RCCs in 143 patients: 114 (clear cell), 17 (chromophobe), and 18 papillary (8 papillary type 1 and 10 papillary

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Jung, Cheolsoo, Tetsuya Aoyama, Tatsuo Wada, Hiroyuki Sasabe, Mitsutoshi Jikei, and Masa-Aki Kakimoto. "The Photorefractive Effect in Monolithic Structural Polyimides." High Performance Polymers 12, no. 1 (2000): 205–12. http://dx.doi.org/10.1088/0954-0083/12/1/317.

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We report here the photorefractive effect in monolithic structural polyimides containing the triphenylamino-( p-nitrophenyl)-ethylene group as a nonlinear optical (NLO) chromophore and hole transfer. Three types of polyimides were synthesized to control the loading ratio of the NLO chromophore; 50, 30 and 17 mol% for polyimides 1, 2 and 3 respectively. In the two-beam coupling experiment, asymmetric energy transfer was observed in the case of polyimides 1 and 2, providing evidence for a phaseshifted grating after corona-poling treatment, whereas the energy transfer of polyimide 3 was not obser

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Chiong, Joseph Daniel, Nhat Truong Nguyen, and Marek B. Majewski. "Totally Tubular TiO₂ Nanotubes as Semiconducting Material for Dye-Sensitized Photoelectrodes." ECS Meeting Abstracts MA2024-01, no. 35 (2024): 1901. http://dx.doi.org/10.1149/ma2024-01351901mtgabs.

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The use of chemical bonds to store solar energy is a promising approach to address the intermittency of the sun by harnessing sunlight to drive chemical transformations. One strategy to drive these processes is to use a bespoke semiconductor surface implemented in a photoelectrode to absorb light and generate charge carriers that can drive redox reactions such as the direct oxidation of adsorbed species on the photoanode. To minimize recombination of photogenerated electron-hole pairs, molecular donor-chromophore-acceptor (D-C-A) systems can be used to sensitize wide bandgap semiconductors for

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Zhang, Qian-Qian, Ke-Jian Jiang, Jin-Hua Huang, et al. "A push–pull thienoquinoidal chromophore for highly efficient p-type dye-sensitized solar cells." Journal of Materials Chemistry A 3, no. 15 (2015): 7695–98. http://dx.doi.org/10.1039/c5ta01348h.

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A push–pull thienoquinoidal dye (QT-1), was synthesized as a sensitizer in a p-DSC, giving a high short-circuit photocurrent density of 8.2 mA cm<sup>−2</sup>. The result would pave new organic semiconductor sensitizers for use in p-DSCs and other organic optoelectronic devices.

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Sinopoli, Alessandro, Christopher J. Wood, Elizabeth A. Gibson, and Paul I. P. Elliott. "New cyclometalated iridium(III) dye chromophore complexes for p-type dye-sensitised solar cells." Dyes and Pigments 140 (May 2017): 269–77. http://dx.doi.org/10.1016/j.dyepig.2017.01.011.

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Summers, Gareth H., and Elizabeth A. Gibson. "Bay Annulated Indigo as a New Chromophore for p-type Dye-Sensitized Solar Cells." ChemPhotoChem 2, no. 6 (2018): 498–506. http://dx.doi.org/10.1002/cptc.201700153.

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Fang, Zhi, Bingping Yang, Chunli Hu, and Jianggao Mao. "Hybridization-activated new deep ultraviolet transparent nonlinear optical material Ba11[Al(PO4)4](P2O7)(PO4)3 with balanced overall performance and parsimony-forbidden structure." Journal of Materials Chemistry C 7, no. 48 (2019): 15162–65. http://dx.doi.org/10.1039/c9tc05648c.

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Hybridization-enabled approach of a new deep-ultraviolet transparent nonlinear-optical material Ba<sub>11</sub>[Al(PO<sub>4</sub>)<sub>4</sub>](P<sub>2</sub>O<sub>7</sub>)(PO<sub>4</sub>)<sub>3</sub> exhibiting balanced overall performance and featuring three types of chromophores.

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TAMER, ÖMER, DAVUT AVCI, and YUSUF ATALAY. "SPECTROSCOPIC STUDY, NLO PROPERTIES AND HOMO–LUMO ANALYSIS ON DIFFERENT DONOR AND ACCEPTOR SUBSTITUENTS OF THIAZOLYLAZOPYRIMIDINE CHROMOPHORES." Journal of Theoretical and Computational Chemistry 12, no. 05 (2013): 1350039. http://dx.doi.org/10.1142/s0219633613500399.

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The molecular geometry optimization, vibrational frequencies and gauge including atomic orbital (GIAO) 1H and 13C chemical shift values of thiazolylazopyrimidine chromophores have been investigated by using density functional theories (DFT/B3LYP, PBE1PBE and BHand-HLYP) and Hartree–Fock (HF) methods with 6–31++G(d,p) basis set. The computed IR and NMR spectra are used to determine the types of the experimental bands observed. Also, the vibrational frequencies are supported on the basis of the potential energy distribution (PED) analysis calculated by using PBE1PBE method. The UV-vis spectrum h

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Zhu, Qingqiang, Qing Xu, Weiqiang Dou, et al. "Diffusion kurtosis imaging features of renal cell carcinoma: a preliminary study." British Journal of Radiology 94, no. 1122 (2021): 20201374. http://dx.doi.org/10.1259/bjr.20201374.

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Objective: To explore the feasibility of diffusion kurtosis imaging (DKI) in differentiating different types of renal cell carcinoma (RCC). Methods: 36 patients with clear cell RCC (CCRCC, low-grade,n = 20 and high-grade, n = 16), 19 with papillary RCC, 11 with chromophobe RCC, and 9 with collecting duct carcinoma (CDC) were examined with DKI technique. b values of 0, 500 and 1000 s/mm2 were adopted. The DKI parameters, i.e., mean diffusivity (MD), mean kurtosis (MK), kurtosis anisotropy (KA), radial kurtosis (RK) and signa-to-noise ration (SNR) of DKI images at different b values were used. R

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Bjazevic, Jennifer, Jasmir G. Nayak, Premal Patel, et al. "The impact of renal cell carcinoma histopathological subtype on disease prognosis: A Canadian multi-institutional analysis." Journal of Clinical Oncology 33, no. 7_suppl (2015): 480. http://dx.doi.org/10.1200/jco.2015.33.7_suppl.480.

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480 Background: Renal cell carcinoma (RCC) is divided into several histopathological subtypes, each with significantly different clinical features. However, current data regarding the prognostic value of histological subtype is limited and conflicted. We examined the impact of RCC histology on disease prognosis in a large, multi-institutional Canadian analysis. Methods: The Canadian Kidney Cancer Information System (CKCis), a prospective database from 14 Canadian institutions, was utilized for the study. 1284 patients with non-metastatic RCC, who underwent surgical intervention with curative i

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Sung, Ji-Yong, Hee-Woong Lim, Je-Gun Joung, and Woong-Yang Park. "Pan-Cancer Analysis of Alternative Lengthening of Telomere Activity." Cancers 12, no. 8 (2020): 2207. http://dx.doi.org/10.3390/cancers12082207.

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Alternative lengthening of telomeres (ALT) is a telomerase-independent mechanism that extends telomeres in cancer cells. It influences tumorigenesis and patient survival. Despite the clinical significance of ALT in tumors, the manner in which ALT is activated and influences prognostic outcomes in distinct cancer types is unclear. In this work, we profiled distinct telomere maintenance mechanisms (TMMs) using 8953 transcriptomes of 31 different cancer types from The Cancer Genome Atlas (TCGA). Our results demonstrated that approximately 29% of cancer types display high ALT activity with low tel

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A., Panda, K. Panda A., K. Hota S., K. Pradhan T., and G. Sahu (Miss). "Studies on some homo- and bimetallic dinuclear transition metal complexes of [2,3,6,9,12,13-hexaaza-4,5,9,11-tetraphenyl-1,14-di( 2' -hydroxyphenyl)-tetradeca-1,3,5,9,11,13-hexaene] (HTHT)." Journal of India Chemical Society Vol 81, Jul 2004 (2004): 552–55. https://doi.org/10.5281/zenodo.5830545.

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P. G. Department of Chemistry. Sarnbalpur University. Jyoti Vihar-768 019, India <em>Fax</em> : 91-663-2430158 Department of Chemistry. Government College, Rourkela-769 004, India <em>Manuscript received 11 June 2002. revised 2 June 2003, accepted I8 R February 2004</em> A series of homo- and bimetallic dinuclear complexes of the type [NiM(HTHT)(H<sub>2</sub>O)<sub>n</sub>]X<sub>n</sub><sup>,</sup> where M = Cu<sup>II</sup>, Co<sup>II</sup> and Ni<sup>II</sup>; n = 0, 2; X = CI<sup>-</sup>. \(NO_3^-\); n' = 2 have been prepared and characterised on the basis of dif

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Zamir, Ahmed, Farhan Akhtar, Samina Waqar, and Aminah Hanif. "PAX8 EXPRESSION AND ITS ASSOCIATIONS IN PRIMARY RENAL CELL CARCINOMA: A CROSS SECTIONAL STUDY." PAFMJ 71, no. 2 (2021): 414–17. http://dx.doi.org/10.51253/pafmj.v71i2.3462.

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Objective: To determine the frequency of PAX8 expression in cases of primary renal cell carcinoma (RCC) and its association with patient demographics and tumor type. Study Design: Cross sectional study. Place and Duration of Study: Department of Histopathology, Armed Forces Institute of Pathology, Rawalpindi, from Jun 2016 to Jun 2017. Methodology: After ethics approval, 57 cases were selected by non probability consecutive sampling. Inclusion criteria was diagnosis of primary renal cell carcinoma of all histological types, in both genders, among adults aged >18 years. Exc

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Leão, Juliane Caroline, Thiago Mazzu, Vitor Leão, et al. "Development of a Microfluidic Paper-Based Analytical Device for Myeloperoxidase Detection in Periodontitis." Dentistry Journal 13, no. 7 (2025): 321. https://doi.org/10.3390/dj13070321.

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Objectives: To develop a microfluidic paper-based analytical device (μPAD) that identifies myeloperoxidase (MPO) levels in the saliva of healthy patients and those with periodontal disease. Materials and Methods: A platform similar to a 96-well plate was printed on Watman® chromatography paper to run the experimental analysis with unstimulated saliva samples were collected from two groups of patients: those with periodontal health (H, n = 15) and established periodontitis (PD, n = 15). Then, three types of chromophore substrates were pipetted into the wells of the prototype: (1) Guaiacol; (2)

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Medina, Vanessa, Guadalupe Aparicio Gallego, Isabel Santamarina, Manuel Valladares Ayerbes, and Luis M. Antón Aparicio. "Biomolecular characterization of formalin-fixed paraffin-embedded primary renal tumor specimens." Journal of Clinical Oncology 30, no. 5_suppl (2012): 421. http://dx.doi.org/10.1200/jco.2012.30.5_suppl.421.

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421 Background: Renal cell carcinoma (RCC) is the most common type of kidney cancer. It is required a better understanding of signalling pathways involved in renal cells. Methods: We assessed using immunohistochemistry (IHC) and quantitative real-time PCR (qPCR) with SYBR Green the profile of predictive markers involved in the cascade of events leading to the formation and progression: invasiveness, angiogenesis and antiapoptotic mechanisms. 80 RCC tissues were detected by IHC. RNA of quality only was obtained in 72 (80% clear RCC, 10% papillary RCC and 10% chromophobe RCC) to carry out the st

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Bimbatti, Davide, Francesco Pierantoni, Eleonora Lai, et al. "Advanced Non-Clear Cell Renal Cell Carcinoma Treatments and Survival: A Real-World Single-Centre Experience." Cancers 15, no. 17 (2023): 4353. http://dx.doi.org/10.3390/cancers15174353.

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Background: Non-clear cell renal cell carcinoma (nccRCC) is a heterogeneous group of cancer. Treatment recommendations are extrapolated from ccRCC and lack solid evidence. Here, we review advanced nccRCC patients treated at our institute. Patients and methods: We collected retrospective data on all advanced nccRCC pts treated at the Istituto Oncologico Veneto from January 2008. We compared overall response rate (ORR), progression free survival (PFS) and overall survival (OS) according to histological subtypes and type of systemic treatments. Kaplan-Meier method, log-rank test and Cox regressio

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Ludvik, Jiri, Ludmila Šimková, Karol Lušpai, Jiří Klíma, and Alan Liška. "Electrochemistry of Molecules for Singlet Fission." ECS Meeting Abstracts MA2023-01, no. 41 (2023): 2321. http://dx.doi.org/10.1149/ma2023-01412321mtgabs.

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To improve the maximal theoretical efficiency of relatively inexpensive single-junction solar cells, a promising principle of Singlet fission (SF) can be used. SF is a photophysical process in which an organic chromophore absorbs a photon and in excited singlet state shares its excitation energy with a neighbouring ground-state chromophore and both are converted into two triplet states which after charge separation offer theoretically up to two lectrons.1,2 Although up to now, it has not found its way into practice, the synthetic, photophysical, electrochemical and computational research is ru

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Melnik, Milan, Ondrej Sprusansky, Clive Eduard Holloway, and Peter Mikus. "Platinum organometallic compounds: classification and analysis of crystallographic and structural data. Monomeric Pt compounds with PtC2AB, PtA2BC and PtABCD compositions." Reviews in Inorganic Chemistry 32, no. 2-4 (2012): 111–80. http://dx.doi.org/10.1515/revic-2012-0008.

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AbstractThis review covers almost 350 four-coordinated monomeric organoplatinum complexes with PtC2AB, PtA2BC and PtABCD compositions, and there is wide variability of chromophores. The most common ligands in addition to the C donor are PPh3 and chlorine. Platinum(II) is found only in a square-planar environment involving cis- as well as trans-configurations with a different degree of distortion, especially when bi- or terdentate ligands are present. The trans-effect decreases in the order of the atoms in which the effect dominates, H>C>P>Si>S. There are at least two types of isome

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Abdolahi, Mitra, Mostafa Alam, Arash Ghaffarpasand, et al. "Assessment of the Expression of GLUT1 in Renal Cell Carcinoma and its Various Subtypes." Open Access Macedonian Journal of Medical Sciences 10, B (2022): 2581–85. http://dx.doi.org/10.3889/oamjms.2022.10904.

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BACKGROUND: Renal cell carcinoma is one of the most common tumors of the kidney. Glucose transporters, transport glucose, and increased expression of these transporters have been reported in various tumor types. Glucose transporter 1 (GLUT1), the best-known glucose transporter, has an important role at several stages in cancer progression. The overexpression of GLUT1 in the tumor cells indicates an increased proliferation and invasive behavior of the tumor. AIM: This study aims to investigate the expression of GLUT1 in renal cell carcinoma and its subtypes. METHODS: This study is a descriptive

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Rubtsova, N. A., A. B. Golbitc, E. V. Kryaneva, D. O. Kabanov, B. Yа Alekseev, and A. D. Kaprin. "The role of ct-perfusion for diagnostic of solid renal tumors." Diagnostic radiology and radiotherapy 12, no. 2 (2021): 70–78. http://dx.doi.org/10.22328/2079-5343-2021-12-2-70-78.

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Introduction. Nowdays, CT and/or MRI do not have sufficient specificity for the differential diagnosis of benign renal masses (oncocytoma and angiomyolipoma with minimal fat) from malignant tumors, and therefore all patients undergo surgical treatment.Purpose and objectives. The aim of the study was to evaluate the diagnostic effectiveness of perfusion computed tomography (PCT) for the differential diagnosis of solid renal masses.Materials and methods. The data of 60 patients (61,28±8,46 years) with primary founded solid renal tumors, who underwent PCT at the preoperative stage, were analyzed.

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Mukhomedyarova, A. A., B. Ya Alekseev, and A. S. Kalpinskiy. "Long-term treatment outcomes of patients with non-clear cell renal cell carcinoma." Cancer Urology 17, no. 3 (2021): 39–46. http://dx.doi.org/10.17650/1726-9776-2021-17-3-39-46.

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Objective: to analyze factors affecting relapse-free and overall survival of patients with non-metastatic non-clear cell renal cell carcinoma (nccRCC) after surgical treatment.Materials and methods. This study included 279 (13.62 %) nccRCC patients from the database containing information on 2049 patients with localized and locally advanced renal cell carcinoma (RCC) without distant metastases who underwent surgical treatment in the Department of Urologic Oncology, P.A. Herzen Moscow Oncology Research Institute between 2002 and 2018. Gender ratio was 1.36:1 (161 men (57.7 %) and 118 women (42.

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Lee, Ju-Han, Eun Mee Han, Zhen-Hua Lin, Zheng-Sheng Wu, Eung-Seok Lee, and Young-Sik Kim. "Clinicopathologic Significance of Nuclear Grooves and Inclusions in Renal Cell Carcinoma: Image Database Construction and Quantitative Scoring." Archives of Pathology & Laboratory Medicine 132, no. 6 (2008): 940–46. http://dx.doi.org/10.5858/2008-132-940-csonga.

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Abstract Context.—Nuclear grooves and inclusions are major features of cancer. However, the nuclear irregularities in renal cell carcinoma (RCC) have not yet been well characterized. Objective.—To determine the clinicopathologic significance of nuclear grooves and inclusions in RCC. Design.—The frequencies or scores of nuclear grooves and inclusions were compared with the histologic subtype, nuclear grade, and TNM stage, as well as overall survival of RCC patients. For objective counting of nuclear irregularities, a relational image database was constructed and used for quantitative assessment

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Bergbauer, Matthias, and Claudia Eggert. "Degradability of chlorine-free bleachery effluent lignins by two fungi: effects on lignin subunit type and on polymer molecular weight." Canadian Journal of Microbiology 40, no. 3 (1994): 192–97. http://dx.doi.org/10.1139/m94-032.

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A bleachery effluent from a sulfite process pulp mill, which was extracted with alkali and treated with oxygen and hydrogen peroxide (EOP), was treated with two fungi, Trametes versicolor and Stagonospora gigaspora. Trametes versicolor did not cause any depolymerization or degradation of effluent lignins but increased the amount of chromophores, whereas S. gigaspora depolymerized the EOP lignins and caused a substantial reduction in aromatic compounds. For both fungal treatments, CuO oxidation caused a decrease in the yield of the aldehydes within the vanillyl and p-hydroxy phenol families, wh

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Šimková, Ludmila, David Gabaj, Karol Lušpai, Karolína Salvadori, and Jiri Ludvik. "Electrochemical Properties of Derivatives of 1,3-Diphenylisobenzofuran – Chromophores for Singlet Fission." ECS Meeting Abstracts MA2023-01, no. 41 (2023): 2340. http://dx.doi.org/10.1149/ma2023-01412340mtgabs.

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Nowadays, there are efforts to apply alternative sources of renewable energy. One of these sources is solar energy. Solar energy represents a renewable free source of energy that is sustainable and totally inexhaustible. The standard efficiency of solar cells is now below 30 %. Singlet fission has attracted rising attention because it promises to increase the maximum of theoretical efficiency of single-junction solar cells. While solar cells after absorption one photon generates one electron, singlet fission is a photophysical process, whereby a singlet exciton generated by irradiation splits

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