Results 41 to 50 of about 10,606 (223)

Chlorine‐Free Depolymerization of Commercial PMMA via Oxygen‐Centered Radicals

Angewandte Chemie, EarlyView.
A new chlorine‐free photothermal method enables sustainable recycling of plastics with C–C backbones under mild conditions. Driven by an oxygen‐centered radical pathway with ppm levels of anthraquinone catalyst, it eliminates hazardous chlorinated solvents, achieving an impressive 97% depolymerization conversion.
Chih‐Yin Lin, Stelios Andreou, Nethmi De Alwis Watuthanthrige, Hyun Suk Wang, Maria‐Nefeli Antonopoulou, Athina Anastasaki   +5 more
wiley   +2 more sources

Intensifying the ATRP synthesis of statistical copolymers by continuous micromixing flow techniques1

Green Processing and Synthesis, 2012
The impact of micromixers on copolymers’ characteristics in a continuous-flow microprocess was studied. A stainless steel coiled tube was used as the microreactor.
Parida Dambarudhar, Serra Christophe A., Bally Florence, Garg Dhiraj K., Hoarau Yannick   +4 more
doaj   +1 more source

Synthesis of star polymers of styrene and alkyl (meth)acrylates from a porphyrin initiator core via ATRP [PDF]

, 2007
A free-base tetrabromoporphyrin, 15,20-tetrakis(4-(2-methyl-2-bromopropoxy)phenyl)-21H,23H-porphine (2), was synthesized in high yield (91%) by the esterification of 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H, 23H-porphine (1) with 2-bromo-2 ...
Penfold, Hazel V., High, L.R.H., Holder, Simon J.   +2 more
core   +1 more source

Aqueous SARA ATRP using inorganic sulfites [PDF]

Polymer Chemistry, 2017
Aqueous SARA ATRP using inorganic sulfites was successfully carried out for the first time.
Carlos M. R. Abreu, Liye Fu, Sheiliza Carmali, Arménio C. Serra, Krzysztof Matyjaszewski, Jorge F. J. Coelho   +5 more
openaire   +2 more sources

Reusable Surface-Modified Bacterial Cellulose Based on Atom Transfer Radical Polymerization Technology with Excellent Catalytic Properties

Nanomaterials, 2019
The high catalytic activity of membrane-binding gold nanoparticles (AuNPs) makes its application in oxidation or reduction an attractive challenge.
Xin Li, Quan Feng, Dawei Li, Narh Christopher, Huizhen Ke, Qufu Wei   +5 more
doaj   +1 more source

Dualfunktional polymer brushes and dualfunktional polymer nanoreactors [PDF]

, 2013
The design of new systems featuring multi-functionalities represents a key strategy in meeting complex challenges in various domains including chemistry, medicine, environmental sciences, and technology.
Dobrunz, Dominik
core   +1 more source

Dimensional Optimization for ZnO-Based Mechano-ATRP with Extraordinary Activity [PDF]

, 2022
Various piezoelectric nanomaterials were utilized in ultrasound-mediated atom transfer radical polymerization (ATRP), owing to their outstanding piezoelectric effect.
Kaixin Liu (9456737), Xiaomeng Zhang (182897), Yanjie He (1429498), Minying Liu (1435813), Lingxin Zong (12648430), Wenjie Zhang (179664), Ge Shi (101790), Xiaoguang Qiao (8968526), Xinchang Pang (1435807)   +8 more
core   +1 more source

ATRP with ppb Concentrations of Photocatalysts

Journal of the American Chemical Society
In atom transfer radical polymerization (ATRP), dormant alkyl halides are intermittently activated to form growing radicals in the presence of a CuI/L/X-CuII/L (activator/deactivator) catalytic system. Recently developed very active copper complexes could decrease the catalyst concentration to ppm level. However, unavoidable radical termination results
Halil Ibrahim Coskun, Ferdinando De Luca Bossa, Xiaolei Hu, Steffen Jockusch, Julian Sobieski, Gorkem Yilmaz, Krzysztof Matyjaszewski   +6 more
openaire   +2 more sources

Strain‐Adaptive Dielectric Metamaterials via Bioinspired “Ligament‐Bone” Architecture for Ultrahigh‐Energy Capacitive Storage

Advanced Science, EarlyView.
A bioinspired strain‐adaptive ligament‐bone architecture achieves record‐high energy density of 26.1 J cm−3 and 90% efficiency at 600 MV m−1, coupled with a Young's modulus of 2.13 GPa. ABSTRACT Polymer dielectrics for capacitive energy storage face fundamental trade‐offs between breakdown strength, energy density, efficiency, and mechanical robustness.
Jian Wang, Xinyu Wang, Jiabao Wang, Biyun Peng, Yifei Zhang, Ning Zhu, Xin Hu   +6 more
wiley   +1 more source

An Efficient Detection Platform Based on Mesoporous Au@Cr2O3 Particles with Schwarz P Surface for Precise Periodontitis Metabolite Profiling

Advanced Science, EarlyView.
A non‐invasive periodontitis diagnosis platform was developed using Au nanoparticles‐decorated mesoporous Cr2O3 (Au@mCr2O3) particles with Schwarz P surface as matrix for saliva metabolic fingerprinting (SMFs) analysis via MALDI‐MS. With the assistance of machine learning of SMFs, this platform enables efficient diagnosis and the screening of potential
Yue Sun, Yan Wang, Fangying Shi, Wenhe Xie, Yiding Zhang, Heyuhan Zhang, Chunhui Deng, Limin Wu, Meihua Chen, Yonghui Deng   +9 more
wiley   +1 more source