Results 81 to 90 of about 12,432 (295)

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA, Croft, RA, Davis, OA, Doran, R, Morgan, KF   +4 more
core   +1 more source

Reinforcement of Cathode Interface Using a Dipolar Small Molecule for Enhancing Operational Stability of Perovskite Solar Cells

Advanced Science, EarlyView.
We report a high‐dipole interlayer, MQPPO, that simultaneously improves efficiency and stability in perovskite solar cells. Its strong interfacial dipole enhances photovoltaic performance, while its uniform coverage and strong interaction with Ag effectively suppress AgI formation, ensuring long‐term stability under moisture and thermal stress.
Dong Hyun Lee, Seok Woo Lee, Min Jun Choi, Ramesh Kumar Chitumalla, Sang Eun Yoon, Gyeong G. Jeon, Juan Anthony Prayogo, Dong Won Kim, Joonkyung Jang, Jinhee Heo, Dong Wook Chang, Jong H. Kim   +11 more
wiley   +1 more source

Fluorine‐Doping of Mesoporous TiO2 Enables Efficient Defect Passivation for High‐Efficiency and Stable Perovskite Solar Cells

Advanced Science, EarlyView.
We introduce an SF6 RIE plasma fluorination method for mesoporous TiO2, suppressing oxygen vacancies and improving charge extraction. The fluorinated TiO2 promotes uniform FAPbI3 film formation and enhances device performance under both one‐sun and indoor illumination.
Hye W. Chun, Sang Yeon Lee, Sang Eun Yoon, Gyeong G. Jeon, Veera Murugan Arivunithi, So Jeong Shin, Min Jun Choi, Byeongsu Kim, Min‐Ho Lee, Dohyeon Jeon, Taekyeong Kim, Jung‐Yong Lee, Jong H. Kim   +12 more
wiley   +1 more source

Rationalized design, synthesis and pharmacological screening of amino acid linked spiro pyrrolidino oxyindole analogs through environment friendly reaction

Journal of Advanced Pharmaceutical Technology & Research, 2013
Introduction: The development of newer synthetic approaches toward the synthesis of polynuclear heteroaromatics and their application in the synthesis of some biologically active compounds has been discussed in this study.
Sanjit Kumar Das, Sanjib Bhattacharya, Amit Kundu   +2 more
doaj   +1 more source

Synthesis of Octahedral Chiral-at-Iridium H-Bonding Catalysts and Applications in Asymmetric Friedel-Crafts Reaction of α-Bromo-Nitroalkenes and Indoles [PDF]

, 2016
八面体配合物具有刚性结构和丰富的立体选择性，其在生命科学、材料科学 医学等方面有着许多的用途。特别是相应的手性配合物对DNA的二级结构、蛋 白质酶等具有良好的分子识别作用。然而，八面体配合物的合成手段非常有限 且在不对称催化方面仅有零星的报道。在本论文中，我们重点围绕八面体手性配 合物的合成方法及其在不对称Friedel-Crafts反应中的应用展开研究。 论文的第一部分以手性辅助剂法高效合成四种铱手性氢键催化剂，如利用手 性噻唑配体或商业化的L-脯氨酸，暂时性地与铱中心配位，形成非对映体后进 ...
黄开放
core  

Glucose-derived spiro-isoxazolines are anti-hyperglycemic agents against type 2 diabetes through glycogen phosphorylase inhibition [PDF]

, 2016
International audienceGlycogen phosphorylase (GP) is a target for the treatment of hyperglycaemia in the context of type 2 diabetes. This enzyme is responsible for the depolymerization of glycogen into glucose thereby affecting the levels of glucose in ...
Azay-Milhau, Jacqueline, Balzarin, Sophie, Chajistamatiou, Aikaterini S., Chrysina, Evangelia D., Docsa, Tibor, Duret, Cédric, Gergely, Pál, Goyard, David, Kónya, Bálint, Leroy, Jérémy, Maurel, Patrick, Petit, Pierre, Praly, Jean-Pierre, Somsák, László, Tournier, Michel, Tousch, Didier, Vidal, Sébastien   +16 more
core   +2 more sources

Diffusion‐Driven Targeted Passivation of Selenium Vacancies via an I‐Doped CdS Buffer Layer for Efficient Sb2Se3 Solar Cells

Advanced Science, EarlyView.
Iodine incorporation into the CdS buffer layer induces spontaneous anion diffusion and selectively passivates selenium vacancies in Sb2Se3 absorbers. The formation of low‐energy, charge‐neutral ISe defects effectively suppresses non‐radiative recombination, resulting in a substantially enhanced open‐circuit voltage and boosting the device efficiency to
Luyan Shen, Deyang Qin, Er Nie, Jiahua Tao, Hidefumi Akiyama, Junhao Chu, Shaoqiang Chen   +6 more
wiley   +1 more source

Michael Addition-Initiated Sequential Reactions from 1,3-Dicarbonyls for the Synthesis of Polycyclic Heterocycles

, 2013
International audienceThis review aims to highlight the most significant recent developments on synthetic strategies involving consecutive, domino and multicomponent reactions featuring a Michael addition-initiating step for the synthesis of polycyclic ...
Bonne, Damien, Bugaut, Xavier, Constantieux, Thierry, Coquerel, Yoann, Rodriguez, Jean   +4 more
core   +3 more sources

Anticancer and antifungal compounds from Aspergillus, Penicillium and other filamentous fungi [PDF]

, 2013
This review covers important anticancer and antifungal compounds reported from filamentous fungi and in particular from Aspergillus, Penicillium and Talaromyces. The taxonomy of these fungi is not trivial, so a focus of this review has been to report the
Bladt, Tanja Thorskov, Frisvad, Jens Christian, Knudsen, Peter Boldsen, Larsen, Thomas Ostenfeld   +3 more
core   +2 more sources

Tracing the Dynamic Chemical Transformations of Spiro‐OMeTAD in Operating Perovskite Solar Cells

Advanced Science, EarlyView.
Mapping of Spiro‐OMeTAD layer's chemistry and electronic properties in PSC: Advanced cluster ion‐beam sputtering depth profile XPS reveals that environmental stressors (light, potential, and moisture) trigger the decomposition of LiTFSI dopants in Spiro‐OMeTAD.
Chittaranjan Das, Mayank Kedia, Kenedy Tabah Tanko, Yunshan Wang, Christian Njel, Monica Lira‐Cantu, Michael Saliba   +6 more
wiley   +1 more source