Results 1 to 10 of about 183,803 (258)

The charge percolation mechanism and simulation of Ziegler-Natta polymerizations, part VI: Mechanism of ethylene polymerization by supported chromium oxide [PDF]

Journal of the Serbian Chemical Society, 2007
Despite intensive research over the last 50 years, many questions concerning ethylene polymerization by supported chromium oxide are still unanswered. Hence, the very fundamental issues of this polymerization are discussed in this paper. It is shown that
Stoiljković Dragoslav, Pilić Branka, Bulajić Miša, Đurasović Nebojša, Ostrovski Nikolaj   +4 more
doaj   +8 more sources

The charge percolation mechanism and simulation of Ziegler-Natta polymerizations, Part VII: Effects of the distribution of chromium active centers on silica on the polymerization of ethylene [PDF]

Journal of the Serbian Chemical Society, 2008
The charge percolation mechanism (CPM) of olefin polymerization in the presence of transition metal compounds has been applied to explain the polymerization of ethylene by silica supported chromium oxide.
Stoiljković Dragoslav, Pilić Branka, Bulajić Miša, Đurasović Nebojša, Ostrovskii Nikolaj   +4 more
doaj   +7 more sources

The charge percolation mechanism and simulation of Ziegler-Natta polymerizations. Part III. Oxidation states of transition metals [PDF]

Journal of the Serbian Chemical Society, 2006
The oxidation state of the transition metal (Mt) active centre is the most disputable question in the polymerization of olefins by Ziegler-Natta (ZN) and metallocene complexes.
Pilić Branka, Stoiljković Dragoslav, Bakočević Ivana, Jovanović Slobodan, Panić Davor, Korugić-Karasz Ljiljana   +5 more
doaj   +7 more sources

Nanocluster intermediates orchestrate the phase transition of ATP condensates [PDF]

Communications Chemistry
Phase separation is fundamental to cellular organization, yet early events driving this process remain poorly characterized. ATP is highly concentrated in platelet dense granules, where it coexists with divalent cations.
Zihan Li, Tairan Yuwen, Chun Tang
doaj   +3 more sources

Anomalous Charge Transport in Conjugated Polymers Reveals Underlying Mechanisms of Trapping and Percolation

ACS Central Science, 2016
While transport in conjugated polymers has many similarities to that in crystalline inorganic materials, several key differences reveal the unique relationship between the morphology of polymer films and the charge mobility. We develop a model that directly incorporates the molecular properties of the polymer film and correctly predicts these unique ...
Sonya A. Mollinger, Alberto Salleo, Andrew J. Spakowitz   +2 more
openaire   +4 more sources

Impact of Fluoroalkylation on the n-Type Charge Transport of Two Naphthodithiophene Diimide Derivatives

Molecules, 2021
In this work, we investigate two recently synthesized naphthodithiophene diimide (NDTI) derivatives featuring promising n-type charge transport properties.
Gaetano Ricci, Sofia Canola, Yasi Dai, Daniele Fazzi, Fabrizia Negri   +4 more
doaj   +2 more sources

The role of interfacial donor–acceptor percolation in efficient and stable all-polymer solar cells

Nature Communications
Polymerization of Y6-type acceptor molecules leads to bulk-heterojunction organic solar cells with both high power-conversion efficiency and device stability, but the underlying mechanism remains unclear.
Zhen Wang, Yu Guo, Xianzhao Liu, Wenchao Shu, Guangchao Han, Kan Ding, Subhrangsu Mukherjee, Nan Zhang, Hin-Lap Yip, Yuanping Yi, Harald Ade, Philip C. Y. Chow   +11 more
doaj   +2 more sources

Understanding the Relevance of Percolation on Charge Transport in Random ZnO Nanowire Networks

Advanced Electronic Materials
Understanding conductivity in nanowire networks and nanoelectronics remains challenging due to arbitrary morphologies and conduction hierarchies that are inherent to current modeling approaches.
Ridvan Ergun, Iddo Amit, Andrew J. Gallant, Del Atkinson, Dagou A. Zeze   +4 more
doaj   +2 more sources

Studies of Intra-Chain and Inter-Chain Charge Carrier Conduction in Acid Doped Poly(3,4-ethylenedioxythiophene) Polystyrene Sulfonate Thin Films. [PDF]

Materials (Basel)
Poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) is a conductive water-processable polymer with many important applications in organic electronics.
Ismail AAA, Bednarski H, Marcinkowski A.
europepmc   +2 more sources

Charge transport mechanism in the forming-free memristor based on silicon nitride

Scientific Reports, 2021
Nonstoichiometric silicon nitride SiNx is a promising material for developing a new generation of high-speed, reliable flash memory device based on the resistive effect.
A. Gismatulin, G. Kamaev, V. Kruchinin, V. Gritsenko, O. Orlov, A. Chin   +5 more
semanticscholar   +1 more source