Results 121 to 130 of about 31,276 (258)

Influence of Organoboron Compounds on Ethylene Polymerization Using Cp2ZrCl2/MAO as Catalyst System

International Journal of Polymer Science, 2014
Organoboron compounds of nonionic and ionic nature, tris(pentafluorophenyl)borane, and N,N-dimethylanilinium tetra(pentafluorophenyl)borate were evaluated to act in conjunction with MAO as activators on ethylene polymerization by using the catalyst ...
Luis Alexandro Valencia López, Francisco Javier Enríquez-Medrano, Ricardo Mendoza Carrizales, Florentino Soriano Corral, Adali Castañeda Facio, Ramón Enrique Díaz de León Gómez   +5 more
doaj   +1 more source

Synthetic Implications of Spin States in the Reactivity of Ni Intermediate Complexes in Coupling Reactions

European Journal of Organic Chemistry, EarlyView.
The formation of triplet Ni(II) complexes by activation of bromoalkenes with alkyl‐ or boryl Ni(I) is key to control the outcome of the reductive cross‐coupling of bromoalkanes precluding the formation of alkylboronates. We present a mechanistic study on the Ni‐catalyzed cross‐coupling reaction of bromoalkanes with diboron compounds as reductants.
Diego J. Cárdenas
wiley   +1 more source

Discovery of bicyclic borane molecule B14H26

Communications Chemistry
The discovery of fullerene following the synthesis of graphene marked a paradigm shift in chemistry. Here, we report the discovery of biycycloborane, arising from the synthesis of borophane (hydrogen boride).
Xiaoni Zhang, Tomoko Fujino, Yasunobu Ando, Yuki Tsujikawa, Tianle Wang, Takeru Nakashima, Haruto Sakurai, Kazuki Yamaguchi, Masafumi Horio, Hatsumi Mori, Jun Yoshinobu, Takahiro Kondo, Iwao Matsuda   +12 more
doaj   +1 more source

Recent Advances in Conjugated Microporous Polymers for Photocatalysis: Mechanism, Synthesis and Applications

Exploration, EarlyView.
Conjugated microporous polymers (CMPs) have attracted more and more attention as new photocatalysts due to their unique advantages such as high performance, long stability and strong light absorption. This review summarizes the application of CMPs as a photocatalyst in recent years and introduces the catalytic mechanism.
Dun Zhou, Kongqing Zhang, Xiaobai Li, Yongpeng Liu, Liang Yao, Hongwei Ma   +5 more
wiley   +1 more source

Memory of Chirality in Radical Addition–Translocation–Cyclization Cascades

Helvetica Chimica Acta, EarlyView.
Radical addition–translocation–cyclization cascades of chiral alkynes show striking memory of chirality (MoC), with strong retention of configuration when fast, polarity favored cyclization are involved. The most effective system employs a highly electron‐poor pentafluorobenzenesulfonyl group.
Christian Simon Gloor, Fabrice Dénès, Valentin Soulard, Philippe Renaud   +3 more
wiley   +1 more source

Catechol‐Containing Poly(2‐isopropyl‐2‐oxazoline): Synthesis and Thermoresponsive Behavior in Aqueous Salt Solutions

Macromolecular Rapid Communications, EarlyView.
Polymers carrying catechol groups are interesting mussel‐inspired materials for wet adhesion applications or metal ion complexation for wastewater treatment. Here, catechol‐containing poly(2‐isopropyl‐2‐oxazoline)s were synthesized via microwave‐assisted cationic (co)polymerization and examined with regard to their thermoresponsive LCST behavior in ...
Niclas Madaj, Nils Lüdecke, Sergio Kogikoski Jr., Ilko Bald, Helmut Schlaad   +4 more
wiley   +1 more source

Living Coordination (Co)Polymerization of Norbornene Derivatives by Using Nickel Catalysts Derived From Bis(1,5‐Cyclooctadiene)nickel(0) and 2,6‐Dihydroxybenzoic Acid

Journal of Polymer Science, EarlyView.
The living coordination polymerization of norbornene is achieved using a nickel catalyst derived from Ni(cod)2 and 2,6‐dihydroxybenzoic acid with trityl borate as cocatalyst to produce poly(norbornene) with controllable molecular weights and narrow polydispersity.
Taidong Yao, Shunsuke Kochi, Tomoki Saito, Ryoyu Hifumi, Shinsuke Inagi, Ikuyoshi Tomita   +5 more
wiley   +1 more source

Synthesis of Amorphous‐Crystalline Mixture Boron Nitride for Balanced Resistive Switching Operation

Small, EarlyView.
An amorphous–crystalline mixture BN (acm‐BN) is synthesized through low‐pressure chemical vapor deposition, achieving balanced resistive switching with low SET voltage and stable RESET. High‐resolution transmission electron microscopy reveals that BN films are fully amorphous at 930 °C, a mixed amorphous–crystalline phase is achieved at 990 °C.
Kyung Jin Ahn, Do Kyeong Yun, Mi Hyang Park, Hong Woon Yun, Minh Chien Nguyen, Van Tu Vu, Huamin Li, Pallavi Aggarwal, Woo Jong Yu   +8 more
wiley   +1 more source

Potassium‐Doped Borophane Nanosheets: A Multifunctional Platform for Reversible Hydrogen Storage and Metal‐Free Hydrogen Transfer

Small, EarlyView.
Borophane in dual roles: as a reductant in the conversion of levulinic acid to γ‐valerolactone and as a reversible hydrogen reservoir through partial rehydrogenation. ABSTRACT 2D borophene has long been proposed as a promising hydrogen storage material, but experimental demonstrations remain limited to boron hydride sheets derived from MgB2.
Rajamohanan Sobhana Anju, Pankaj Kumar, Dhanaji R. Naikwadi, Bettina Baumgartner, Savi Chaudhary, Atul Bansode, Merel C. Konings, Freek Ariese, Erdni D. Batyrev, Prasad Gonugunta, Vimal Chandra Srivastava, Ramaswamy Murugavel, N. Raveendran Shiju   +12 more
wiley   +1 more source

Wafer‐Scale Self‐Limiting Epitaxy of Bernal‐Stacked Single‐Crystal Boron Nitride

Small, EarlyView.
Wafer‐scale, single‐crystal Bernal‐stacked boron nitride (bBN) bilayers are grown by flow‐modulated MOCVD, where monoatomic Ni step edges on Ni(111) deterministically direct AB stacking. As an ultrathin interlayer, bBN suppresses interfacial scattering and enables robust, nonvolatile polarization switching in MoS2 channels, offering a scalable platform
Jaewon Wang, Hyeonwoo Lee, Jaemin Kim, Haeng Un Yeo, Cheol Hwan Yoon, Min Seok Yoo, Junseop Noh, Sora Jang, Ju‐Hyoung Han, Juwon Han, Jaeeun Park, Young Ho Jin, Huijun Han, Kitae Park, Joonki Suh, Tae‐Sik Yoon, Seunguk Song, Minsu Seol, Chanyong Hwang, Hyung‐Joon Shin, Zonghoon Lee, Changwook Jeong, Soon‐Yong Kwon   +22 more
wiley   +1 more source