Results 151 to 160 of about 2,082 (291)

Synthesis and Electrochemical Studies of p-Phenylenediamines.

, 2015
[[abstract]]本論文主要分為兩大主題，第一個主題是在探討對苯二胺衍生物的合成、電化學與光譜電化學研究。本研究探討對苯二胺衍生物的苯環及甲基取代對於氧化電位的影響，並研究其光譜電化學。研究發現，當對苯二胺上的氫以苯環的取代數目越多時，氧化電位越正，表示苯環數目越多，越不易氧化；而當甲基的取代數目越多時，氧化電位越負，表示甲基取代數目越多，越容易氧化。 第二個主題則是研究對苯二胺衍生物藉由滴定不同pKa的含氮鹼，以電化學的方式觀察化合物氧化後誘導與不同的鹼產生氫鍵的能力。在循環伏安法中可以得知 ...
鍾宜君, Chung, Yi-Chun
core  

Carbon Dots: An Emerging Frontier for Green and Sustainable Civil Engineering Materials

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Traditional civil engineering materials (CE materials) are usually involved with high‐energy consumption during manufacturing, significant maintenance costs, and substantial environmental impacts throughout their life cycles. The progress of nanotechnology is catalyzing a green and sustainable transformation within the field.
Weiwen Hao, Xiaolong Wang, Xiao Chen, Dong Liu, Zhenhui Kang, Cheng Zhu   +5 more
wiley   +1 more source

Synthesis of benzimidazoles from <i>o</i>-phenylenediamines with α-keto acids <i>via</i> amino acid catalysis. [PDF]

RSC Adv
Luo Z, Huang M, Wang X, Wang X, Hu Z, Zhao L, Huang T.   +6 more
europepmc   +1 more source

Engineered Metal–Organic Frameworks‐Based Materials for Environmental Detection

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Engineered metal–organic frameworks (MOFs) regulated by various material modification strategies are discussed for environmental contaminant detection under different sensing mechanisms, providing future improvements of MOFs in environmental detection. Sensitive and selective detection of contaminants is crucial for environmental protection.
Pan Gao, Song Wang, Yuechao Yao, Yibo Dou   +3 more
wiley   +1 more source

Probing Steady‐State Carrier Properties and Charge Transport in Covalent Organic Framework by Frequency‐Domain Terahertz Spectroscopy

Angewandte Chemie, Volume 138, Issue 25, 15 June 2026.
This work reports a combined frequency‐domain and time‐domain terahertz (THz) spectroscopic approach to elucidate intrinsic carrier properties and transport mechanisms in framework materials over the extended 0.5–20 THz region. Subtle structural and chemical variations are shown to strongly influence THz charge‐transport behavior across the far ...
Satyapriya Nath, Saiprakash Rout, Mahalaxmi Samal, Snehal Haldankar, Md Habib Ahsan, Anol Mondal, Sudeep Tiwari, Adithyan Puthukkudi, Avani KV, Ashis K. Nandy, Shriganesh S. Prabhu, Himansu S. Biswal, Xinliang Feng, Bishnu P. Biswal   +13 more
wiley   +2 more sources

Non-Catalyzed Cascade Double Imination Reaction of 2‑Fluoro-alk-3-yn-1-ones: Sustainable Synthesis of 3‑Fluoro-1,5-benzodiazepines. [PDF]

ACS Org Inorg Au
Olson TL, Kaspi-Kaneti AW, Zając A, Agyei Gyimah D, Walsh A, Weston JA, Rusakov AA, Wheeler KA, Török B, Dembinski R.   +9 more
europepmc   +1 more source

Patch Test Results With the European Baseline Series, 2021/2022—Joint European Results of the ESSCAA and the EBSB Working Groups of the ESCD, and the GEIDACC

Contact Dermatitis, Volume 95, Issue 1, Page 17-32, July 2026.
ABSTRACT Background Patch test results obtained with the European Baseline Series (EBS) in its current version serve both contact allergy surveillance and (re‐)assessing the diagnostic value of EBS allergens. Objectives To present results of current EBS patch testing, obtained in 59 departments in 14 European countries during 2021 and 2022.
Wolfgang Uter, S. Mark Wilkinson, Olivier Aerts, Andrea Bauer, Leopoldo Borrego, Richard Brans, Timo Buhl, Heinrich Dickel, Aleksandra Dugonik, Francesca Larese Filon, Ana Giménez Arnau, Cataldo Patruno, Györgyi Pónyai, Stamatis Gregoriou, Steffen Schubert, Dagmar Simon, Luca Stingeni, Skaidra Valiukevičienė, Elke Weisshaar, Thomas Werfel, Margarida Gonçalo, Marie‐L. A. Schuttelaar, ESSCAA and EBSB ESCD Working Groups, and the GEIDACC , Birger Kränke, Alexander Navarini, Philip Spring, Ulrike Beiteke, Cecilia Dietrich, Sibylle Schliemann, Detlef Becker, Swen Malte John, Nicola Wagner, Dimitra Koumaki, Maddalena Napolitano, Anna Belloni Fortina, Francesca Larese Filon, Rosella Gallo, Thomas Rustemeyer, Radoslaw Spiewak, Maja Kalac Pandurovic, Tanja Kmecl, Mojca Simončič Godnič, Nada Kecelj, Philippa Cousen, Ella Dendooven, Juan Francisco Silvestre Salvador, José Manuel Carrascosa Carrillo, Mónica Munera Campos, Esther Serra Baldrich, Gemma Melé‐Ninot, Cristina Barrabés Torrella, David Pesqué, María Antonia Pastor Nieto, Francisco Navarro Triviño, Inmaculada Ruiz Gonzales, Enrique Gómez de la Fuente, Susana Córdoba Guijarro, Francisco Javier Ortiz de Frutos, Fátima Tous Romero, Tatiana Sanz Sánchez, Pablo Chicharro Manso, Marta Andreu Barasoain, Marta Elosua González, Araceli Sánchez Gilo, Paloma Sánchez‐Pedreño Guillén, Pedro Mercader‐García, Carmen Paredes Suárez, María Elena Gatica Ortega, José Juan Pereyra Rodríguez, Javier Miquel Miquel, Mercedes Rodríguez Serna, Violeta Zaragoza Ninet, Ricardo González Pérez   +73 more
wiley   +1 more source

Decoding Carbon Dot Purity by Nuclear Magnetic Resonance

Angewandte Chemie, Volume 138, Issue 25, 15 June 2026.
NMR spectroscopy tracks the removal of molecular and oligomeric impurities in carbon dots, enabling a (semi)quantitative evaluation of their purity through integrated peak analysis. ABSTRACT Carbon dots (CDs) have attracted increasing attention in recent years and have been widely explored in many fields.
Yalei Hu, Alberto Bianco
wiley   +2 more sources

Benzimidazole motifs in drug discovery: sustainable synthetic strategies and emerging biological applications. [PDF]

RSC Adv
Martis GJ, Gaonkar SL.
europepmc   +1 more source

Iodine Promoted Condensation of Aldoses and α-Ketoacid- Terminated Saccharides with o-Phenylenediamines for Synthesis of Glycoconjugates

, 2010
細胞以外層表面上的醣蛋白作為標記分子，在生物辨識的過程中扮演重要的角色。除了與蛋白質連接的核心醣序列很類似外，不同種的細菌會有其特定的多醣序列。在革蘭氏陽性菌中，GalNAc是作為連接蛋白質與多醣序列的核心；而在革蘭氏陰性菌中，其核心變為Kdo (3-deoxy-D-manno-octulosonic acid)。目前有很多方法可以去修飾未保護的尾端GalNA，但是對於Kdo而言，仍然沒有一個有效的方法可以針對性修飾並將多醣序列與其他攜帶蛋白連接。 我們在這裡描述了一個新的方法，用碘在醋酸的環境下 ...
賴柏廷, Lai, Po-Ting
core