Results 31 to 40 of about 370 (171)

A Triple‐Catalytic, Fully Biogenic Synthesis of Cyclic Carbonates

ChemSusChem, Volume 19, Issue 1, January 2026.
A three‐step synthesis of cyclic carbonates from biogenic resources (fatty acids, O2, CO2) is reported. The process operates via a visible light‐mediated hydrocarbon oxidation, with an overall 100% atom‐economy, in the presence of easily accessible catalysts (porphyrin, VO(acac)2, pyridine) but without intermediate work‐up procedures.
Robin Stuhr, Leon Liu, Axel Jacobi von Wangelin   +2 more
wiley   +1 more source

Comparative Study of Resins and Asphaltenes of Heavy Oils as Sources for Obtaining Pure Vanadyl Porphyrins by the Sulfocationite-Based Chromatographic Method

, 2018
The resins and asphaltenes of three heavy oils differing in origin (Permian and Carboniferous) and vanadium content (0.025–0.165 wt %) have been studied as sources for isolation of spectrally pure vanadyl porphyrins by sulfocationite-based ...
Elvira Gabidullovna Tazeeva (4595335), Svetlana Gabidullinovna Yakubova, Nikolay Alexandrovich Mironov, Dmitry Valerevich Milordov, Makhmut Renatovich Yakubov (4595347), Guzalia Rashidovna Abilova, Makhmut Renatovich Yakubov, Guzalia Rashidovna Abilova (4595344), Svetlana Gabidullinovna Yakubova (4595350), Elvira Gabidullovna Tazeeva, Yulia Yurevna Borisova (4595341), Dmitry Valerevich Milordov (4694491), Yulia Yurevna Borisova, Nikolay Alexandrovich Mironov (4595356)   +13 more
core   +1 more source

Table_7_Postdiagenetic Bacterial Transformation of Nickel and Vanadyl Sedimentary Porphyrins of Organic-Rich Shale Rock (Fore-Sudetic Monocline, Poland).DOCX

, 2021
Nickel and vanadyl porphyrins belong to the so-called fossil geo- or sedimentary porphyrins. They occur in different types of organic matter-rich sediments but mostly occur in crude oils and their source rocks, oil shales, coals, and oil sands.
Robert Stasiuk (11770313), Renata Matlakowska (2309104)   +1 more
core   +1 more source

Organic field‐effect transistors: Materials design, device physics, and contact engineering for high‐performance flexible electronics

Information &Functional Materials, Volume 2, Issue 4, Page 267-305, December 2025.
This review bridges molecular design with device engineering to address key challenges in organic transistors. By integrating materials chemistry with contact optimization, it provides pathways toward stable, high‐performance flexible electronics. Abstract Organic field‐effect transistors are widely recognized as key enabling components for low‐cost ...
Fenglan Kuang, Fei Wang, Dawei Duan, Yicong Ma, Xiaokang Sun, Soumitra Satapathi, Annie Ng, Haoran Lin, Zheng Li, Yufei Zhong, Hanlin Hu   +10 more
wiley   +1 more source

Data_Sheet_1_Postdiagenetic Bacterial Transformation of Nickel and Vanadyl Sedimentary Porphyrins of Organic-Rich Shale Rock (Fore-Sudetic Monocline, Poland).pdf

, 2021
Nickel and vanadyl porphyrins belong to the so-called fossil geo- or sedimentary porphyrins. They occur in different types of organic matter-rich sediments but mostly occur in crude oils and their source rocks, oil shales, coals, and oil sands.
Robert Stasiuk (11770313), Renata Matlakowska (2309104)   +1 more
core   +1 more source

Reconstruction of the biogeochemistry and ecology of photoautotrophs based on the nitrogen and carbon isotopic compositions of vanadyl porphyrins from Miocene siliceous sediments [PDF]

Biogeosciences, 2008
We determined both the nitrogen and carbon isotopic compositions of various vanadyl alkylporphyrins isolated from siliceous marine sediments of the Onnagawa Formation (middle Miocene, northeastern Japan) to investigate the biogeochemistry and ecology of ...
Y. Kashiyama, N. O. Ogawa, M. Shiro, R. Tada, H. Kitazato, N. Ohkouchi   +5 more
doaj  

Interfacial Photoelectrochemistry in Organic Synthesis

Angewandte Chemie International Edition, Volume 64, Issue 42, October 13, 2025.
Heterogeneous photoelectrodes are widespread for activations of H2O and CO2, while homogeneous photoelectrochemistry with molecular catalysts dominates complex molecule activations in synthesis. Nonetheless, interfacial photoelectrochemistry (iPEC) offers great potential for synthesis, including catalyst cost‐efficiency, reusability, and stability ...
Gabriel Chan, Daria Corsi, Oleksandr Savateev, Paolo Giusto, Joshua P. Barham   +4 more
wiley   +1 more source

Node Modification of Metal‐Organic Frameworks for Catalytic Applications

ChemistryOpen, Volume 14, Issue 7, July 2025.
Post‐synthetic modification of metal‐organic framework (MOF) nodes with metal or organic species produces advanced materials that serve as efficient catalysts, promoting more sustainable chemical transformations. Abstract Metal‐organic frameworks (MOFs) have been a breakthrough in different fields of chemistry, not only due to the extensive ...
Mario Martos, Isidro M. Pastor
wiley   +1 more source

Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films

Supramolecular Materials
Relative abundance of vanadyl etio-porphyrin-III, VO-EtioP-III, a typical geoporphyrin, reaches its maximum in solid fossil fuels (coals). This determines the interest in studying supramolecular structure and solid-state properties of this compound ...
Andrey I. Koptyaev, Ekaterina D. Rychikhina, Yury A. Zhabanov, Vlad V. Travkin, Georgy L. Pakhomov   +4 more
doaj   +1 more source

Structural Engineering of Sonosensitive Nanohybrids by Active Vanadium Species toward Collapse of Multi‐Antioxidant Defenses and Boosted Therapy of Triple‐Negative Breast Cancer

Small Structures, Volume 6, Issue 6, June 2025.
A sonosensitive nanohybrid with defect structures is constructed through in situ etching deposition of vanadyl phosphate onto porphyrin metal–organic frameworks (MOFs), in which defects induce narrower bandgap and serve as charge traps for enhancing singlet oxygen generation under ultrasound irradiation. Additionally, released vanadium species overcome
Tingting Zhang, Jing Zhu, Yunyun Wu, Daqing Xia, Xiyue Xie, Lin Li, Zhenqiang Wang, Kaiyong Cai, Jixi Zhang   +8 more
wiley   +1 more source