Results 181 to 190 of about 59,781 (298)

A Tert‐Alkyl Terephthalate Derivative as a Universal Degradable Unit for Condensation Polymers

Angewandte Chemie, EarlyView.
A sterically bulky dicarboxylic acid core bearing a tertiary alkyl ester enables photocatalytic C─O bond cleavage via generation of a stabilized tertiary alkyl radical. Incorporated into polyarylate, polyurethane, and polyester, this universal trigger facilitates efficient degradation under identical conditions (up to 99% within 2–4 h). Remarkably, the
Yasuyuki Nitta, Ryosuke Nishikuma, Souya Kouda, Masatoshi Ohyama, Meiki Shinoda, Tsuyoshi Taniguchi, Takashi Koike, Takashi Nishikata   +7 more
wiley   +1 more source

Chlorine-Free Depolymerization of Commercial PMMA via Oxygen-Centered Radicals. [PDF]

Angew Chem Int Ed Engl
Lin CY, Andreou S, De Alwis Watuthanthrige N, Wang HS, Antonopoulou MN, Anastasaki A.   +5 more
europepmc   +1 more source

Diblock Copolymer Nanoparticles Act as Nanoreactors for the Synthesis of Sterically‐Stabilized Inorganic Oxide Particles in Non‐polar Media

Angewandte Chemie, EarlyView.
Poly(lauryl methacrylate)‐poly(2‐hydroxyethyl methacrylate) (PLMA‐PHEMA) diblock copolymer nanoparticles prepared in non‐polar media serve as nanoreactors for the in situ synthesis of silica from tetraethyl orthosilicate (TEOS). A silica mass loading of 17% as judged by thermogravimetric analysis (TGA) produces a highly transparent dispersion, and ...
Priyanka Chohan, Andi Xie, Oleksandr O. Mykhaylyk, Steven P. Armes, Giles M. Prentice, David J. Atkinson, Andrew J. Smith   +6 more
wiley   +1 more source

Trifluoromethylation-Induced Lactonization: A Novel Transformation of Unsaturated Carboxylic Acids. [PDF]

ChemistryOpen
Remete AM.
europepmc   +1 more source

Iron‐Photocatalyzed Alkene Chloroaminoxylation: A Platform for Orthogonally Activatable Building Blocks

Angewandte Chemie, EarlyView.
An iron‐photocatalyzed unsymmetrical 1,2‐hetero(atom)difunctionalization of alkenes enables to install orthogonal C–Cl and C–O (alkoxyamine) handles which provides access to diverse nucleophiles via complementary reactivity (SN and photoredox) at two distinct sites. Detailed mechanistic studies elucidate interesting features of the iron catalytic cycle.
Amrita Chaudhuri, Meghana Aladahalli Shekar, Mohammad Zafar, Marianne Engeser, Gregor Schnakenburg, Ala Bunescu   +5 more
wiley   +1 more source

Red light mediated energy transfer catalysis <i>via</i> stable organic radicals. [PDF]

Chem Sci
Feng TH, Nita Vizcardo AP, Pun AB.
europepmc   +1 more source

Engineering Atomically Precise Cu4I4 Nanoclusters With Integrated Adsorption and Hydrogenation Functions for Efficient Photocatalytic Nitrate‐to‐Ammonia Conversion

Angewandte Chemie, EarlyView.
Efficient photocatalytic nitrate‐to‐ammonia conversion is achieved over an atomically precise Cu4I4 motif through dual‐site cooperation. Lewis‐acidic Cu centers promote nitrate adsorption and activation, while adjacent I sites facilitate active hydrogen generation for stepwise hydrogenation.
Wanting Zhang, Yuehua Li, Junjie Jin, Chunwei Dong, Xi Cao, Xingchi Li, Xuanjun Wu, Jiaqi Wang, Atta Ullah, Gaspar Ferreyra Vaggione, Rodrigo A. Iglesias, Yun Chen, Emiliano Cortés, Dengsong Zhang   +13 more
wiley   +1 more source

A review of quartz crystal microbalance as a tool to monitor photocatalytic properties. [PDF]

RSC Adv
Manuda KRJ, Jayasundara DR.
europepmc   +1 more source

Grenzflächen‐Synergie zwischen Mn und Kohlenstoffnitrid ermöglicht die selektive photokatalytische C–H‐Chlorierung mittels Einzelatomkatalyse

Angewandte Chemie, EarlyView.
Ein Mangan‐Einzelatom‐Photokatalysator auf funktionalisiertem Kohlenstoffnitrid ermöglicht die selektive, durch sichtbares Licht angetriebene C(sp2)–H‐Chlorierung. DFT‐gestützte mechanistische Untersuchungen zeigen, dass die photoinduzierte Ladungstrennung NCS aktiviert, während isolierte Mn‐Zentren Mn–Cl‐Intermediate an der Katalysatorgrenzfläche ...
Jaro Vanderghinste, Prakash Kumar Sahoo, Xinbang Wu, Thanh Huyen Vuong, Anna Rokicińska, Susanna Monti, Giovanni Barcaro, Alina Skorynina, Aleksander Jaworski, Vivien Michaelis, Jabor Rabeah, Julia Bornhorst, Laura Simonelli, Piotr Kuśtrowski, Adam Slabon, Paul J. Dyson, Shoubhik Das   +16 more
wiley   +1 more source

ALDH Inhibition‐Primed Photocatalysis Disrupts Cancer Stemness Plasticity

Angewandte Chemie, EarlyView.
DE‐Et converts ALDH‐mediated redox buffering into a photoredox vulnerability by coupling ALDH inhibition with red‐light‐driven catalytic NADH oxidation. This enzyme‐coupled photoredox strategy sustains mitochondrial NADH/NAD+ imbalance, induces pyroptotic tumor cell death, suppresses tumor growth in vivo, and promotes systemic antitumor immunity ...
Yujin Kim, Shankun Yao, Ji Hyeon Kim, Rongrong Huang, Hyeonji Rha, Shumeng Li, Kippeum Lee, Yunjie Xu, Xiaogang Liu, Yuncong Chen, Jong Seung Kim   +10 more
wiley   +1 more source