Results 121 to 130 of about 155,987 (342)

Single‐Crystal Organic Field‐Effect Transistors Based on 5,15‐Bisaryl‐Tetrabenzoporphyrins: Synthesis, Structure, and Charge Transport Properties

Advanced Materials Interfaces, EarlyView.
This study explores single‐crystal organic field‐effect transistors (SC‐OFETs) based on 5,15‐bisaryl‐tetrabenzoporphyrin derivatives. It highlights the impact of meso‐substituted groups on molecular packing and charge transport. Among the derivatives, C8Ph‐BP achieves the highest hole mobility (1.64 cm2 V−¹ s−¹) due to enhanced π‐stacking with ...
Kazuya Miyazaki, Kento Teranishi, Hiroshi Matsuda, Kyohei Matsuo, Mitsuaki Yamauchi, Yoshiyuki Mizuhata, Nobutaka Shioya, Takeshi Hasegawa, Hiroko Yamada   +8 more
wiley   +1 more source

Beyond 3D: Smart Material Systems for Microscale 4D Printing

Advanced Materials Technologies, EarlyView.
Smart materials exhibit shape changes in response to their environment, enabling scientists to go beyond 3D in the rapidly growing field of 4D printing. This review covers recent advances, current challenges, and emerging trends in 4D printing on the microscale.
Daniel Maher, Marcin Piekarczyk, Babak Rezaei, Ada‐Ioana Bunea   +3 more
wiley   +1 more source

Synthesis and characterization of a novel series of meso (nitrophenyl) and meso (carboxyphenyl) substituted porphyrins

Journal of the Brazilian Chemical Society, 2000
The anionic 5,10,15-tris(4-carboxyphenyl), 20-mono(2-nitrophenyl) porphyrin (1), 5,10(or 15)-bis(4-carboxyphenyl), 15(or 10),20-bis(2-nitrophenyl)porphyrin (2) and 5-mono(4-carboxyphenyl), 10,15,20-tris(2-nitrophenyl)porphyrin (3) were sinthesized ...
Schiavon Marco A., Iwamoto Lidia S., Ferreira Antônio G., Iamamoto Yassuko, Zanoni Maria V. B., Assis Marilda das D.   +5 more
doaj  

Photochemical Preparation of (Aza‐)Indolines: Diastereoselective Synthesis and Polarity Reversal Strategy

Advanced Synthesis &Catalysis, Accepted Article.
Herein, we present the first light‐mediated, diastereoselective de novo synthesis for 2,3‐substituted indolines, a privileged scaffold in pharmaceuticals. The protocol was tested with various aryl and alkyl groups, maintaining high yields up to 85% across different substituents.
Julian Melder, Maxi Heldner, Julia Svetličić, Abdinasir Adow, Frank Rominger, Matthias Rudolph, Guenter Helmchen, A. Stephen K. Hashmi   +7 more
wiley   +1 more source

Detection of excited state absorption cross-section of porphyrin through cw and femto-second laser pump-probe technique [PDF]

arXiv, 2019
We report on direct detection of excited states absorption cross-section using dual wavelength pump-probe technique. Also, we experimentally demonstrate using porphyrin composite molecules (porphyrin derivatives such as 5,10,15,20-meso-tetrakis phenyl porphyrin (H2TPP), 5,10,15,20 - meso-tetrakis(4-hydroxyphenyl) porphyrin (H2TPP(OH)4)).
arxiv  

A balanced treatment of static and dynamic correlation in free- and Mg-porphyrin [PDF]

arXiv, 2020
We present an ab-initio dynamical configuration interaction (DCI) study of free- and Mg-porphyrin. DCI is a recently developed active space theory based on the L\"owdin downfolding technique. In the active space, static correlation is described exactly with full configuration interaction.
arxiv  

Electrochemistry and Spectroscopy of Sulfate and Thiosulfate Complexes of Iron Porphyrins [PDF]

, 2002
The electrochemical and spectroscopic properties of the complex formed by the addition of thiosulfate to ferric porphyrins were examined. The NMR spectrum of the thiosulfate–ferric porphyrin complex was consistent with a high-spin ferric complex, while ...
Crawford, Philip Walter, Ryan, Michael D.   +1 more
core   +1 more source

Porphyrin-Induced Protein Oxidation and Aggregation as a Mechanism of Porphyria-Associated Cell InjurySummary

Cellular and Molecular Gastroenterology and Hepatology, 2019
Genetic porphyrias comprise eight diseases caused by defects in the heme biosynthetic pathway that lead to accumulation of heme precursors. Consequences of porphyria include photosensitivity, liver damage and increased risk of hepatocellular carcinoma ...
Dhiman Maitra, Juliana Bragazzi Cunha, Jared S. Elenbaas, Herbert L. Bonkovsky, Jordan A. Shavit, M. Bishr Omary   +5 more
doaj  

Manganese 5,10,15,20-Tetra(N-ethyl-3-carbazolyl) Porphyrin

Molbank, 2010
Manganese complex of 5,10,15,20-tetra(N-ethyl-3-carbazolyl) porphyrin was synthesized and characterized by electronic absorption spectrophotometry and cyclic voltammetry. The spectral data were in agreement with the proposed structure.
Cynthia Pruitt Tidwell, L. Dalila Fondren, David E. Nikles   +2 more
doaj   +1 more source

Ammonia Dynamics in the Human Body: Insights in Biomedical Sensing Technologies

Advanced Sensor Research, EarlyView.
Ammonia (NH3) is a significant biomarker in diagnostics, affecting the respiratory system, stomach, liver, kidneys, bladder, and gastrointestinal tract. NH3 detection, using sensors, has the potential to improve medical diagnosis. This review examines recent advancements in NH3 sensing technologies and explores future research directions, including ...
Annelot Nijkoops, Manuela Ciocca, Martina Aurora Costa Angeli, Silvia Pogliaghi, Soufiane Krik, Enrico Avancini, Niko Münzenrieder, Paolo Lugli, Luisa Petti   +8 more
wiley   +1 more source