Results 21 to 30 of about 103,651 (297)

Facile Preparation and Properties of Crosslinked Copolyether Elastomers with 1,2,3‐Triazole and Urethane Subunit via Click Polymerization

open access: yesChemistryOpen, 2019
An azide terminated ethylene oxide‐tetrahydrofuran copolymer with urethane segments (ATUPET) as a novel binder pre‐polymer, has been prepared through ethylene oxide‐tetrahydrofuran random copolymer (PET) end‐capping modification via one‐pot method.
Dr. Qian Zhang   +6 more
doaj   +1 more source

Analysis of intermolecular interactions in homologous molecular crystals of energetic materials

open access: yesEnergetic Materials Frontiers, 2020
s: Crystal packing modes determine the energy and safety performance of energetic materials (EMs) to some extent. To deepen the understanding of the intermolecular interactions in the crystal packings, the homologous molecular crystals of energetic ...
Yilin Cao   +4 more
doaj   +1 more source

Research Progress on Chiral Supramolecular Sensors for Enantiomer Detection

open access: yesChemosensors, 2023
Chiral substances occur naturally in abiotic and living systems. The recognition and detection of chiral substances in the natural environment or their analysis and detection in biological systems are crucial.
Xiao-Fan Wu   +6 more
doaj   +1 more source

A flourish of fluorine [PDF]

open access: yesNature Chemistry, 2010
Herbert Roesky relates how the small, highly electronegative fluorine atom unveiled the chemical reactivity of noble gases and found many practical applications. but it can also render organic compounds highly toxic or pollutants.
openaire   +3 more sources

Long‐Lasting and Rapid‐Responsive Media for Rewritable Information Storage Based on Low‐Cost N‐Substituted Maleimides Oligomers

open access: yesMacromolecular Materials and Engineering, 2020
Controllable synthesis of high‐performance materials with low‐cost is critical for the development of functional devices. Herein, a series of sequence‐controlled low‐dispersity oligomers with acid–base chromotropic capability via simple copolymerization ...
Congcong Zhai   +6 more
doaj   +1 more source

Novel Energetic Coordination Polymers Based on 1,5-Di(nitramino)tetrazole With High Oxygen Content and Outstanding Properties: Syntheses, Crystal Structures, and Detonation Properties

open access: yesFrontiers in Chemistry, 2019
In this study, a series of novel 1,5-di(nitramino)tetrazole (DNAT)-based bimetallic energetic coordination polymers, MK2(DNAT)2·4H2O [M = Fe, Cu, Ni, Co, and Zn], were designed and synthesized in a simple and convenient self-assembly synthetic process ...
Yanan Li   +7 more
doaj   +1 more source

Extra contribution to the crystal stability of insensitive explosive TATB: The cooperativity of intermolecular interactions

open access: yesDefence Technology, 2023
An in-depth analysis on the cooperativity of intermolecular interactions including hydrogen bonding and π-π stacking in 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) crystal was studied.
Zhi-xiang Zhang   +7 more
doaj   +1 more source

Comparative study on thermal behavior of three highly thermostable energetic materials: z-TACOT, PYX, and TNBP

open access: yesFirePhysChem, 2021
The thermal behavior, decomposition kinetics and mechanisms of three heat-resistant explosives (HREs), 1,3,7,9-tetranitrodibenzo-1,3a,4,6a-tetraazapentalen (z-TACOT), 2,6-bis(picrylamino)-3,5-dinitropyridine (PYX), and 4,8-di(2,4,6-trinitrophenyl ...
Ning Liu   +5 more
doaj   +1 more source

Fluorination with Complex Fluorine Compounds

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1969
鉄,アルミニウム,アンチモン,ケイ素,チタンなどの6配位錯フッ化物によるハロゲン交換フッ素化反応について研究した。フッ素化の対象としては,四塩化炭素,クロロホルム,ヘキサクロルエタンなどの有機塩素化合物をえらび,オートクレープ中で250ないし350℃で2時間ないし4時間反応させた。この結果,鉄,アンチモン,アルミニウムなどの錯フッ化勃の活性が大きく,ケイ素の錯フッ化物の活性はこれらについだ。これに対し,チタソの錯フッ化物は不活性であることがわかった。鉄,アンチモン,アルミニウムの錯フッ化物の活性が大きいことは,これら錯フッ化物がリガンド交換活性な外軌道または高スピン錯塩であることによるものと考えられる。実際に,反応後の固体をX線回折分析により調べたところ,低配位錯塩NaAIF4 ...
Susumu OKAZAKI, Tadayoshi WATANABE
openaire   +2 more sources

Fluorine-induced gradient electric field in mesoporous covalent organic frameworks for efficient separation of polarized perfluorinated gases

open access: yesNature Communications
The challenge of effectively capturing and separating perfluorinated gases is critical due to environmental concerns and the potential to recover these gases as high-value products in the silicon semiconductor industry.
Mengyao Chen   +10 more
doaj   +1 more source

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