Cubic Mesophase in an Unsymmetrical Alkyl Ammonium Salt. Synthesis and Structural Model

ChemPhysChem ◽  
2002 ◽  
Vol 3 (12) ◽  
pp. 1024-1030 ◽  
Author(s):  
Corinne Soulié ◽  
Pierre Bassoul ◽  
François Tournilhac
Keyword(s):  
Ammonium Salt ◽  
Structural Model ◽  
Alkyl Ammonium

Anilinium chloride as a model for the transition state for benzyl chloride solvolysis

1969 ◽  
Vol 47 (8) ◽  
pp. 1437-1439 ◽  
Author(s):  
Ikchoon Lee ◽  
J. B. Hyne
Keyword(s):  
Transition State ◽  
Benzyl Chloride ◽  
Composition Dependence ◽  
Structural Model ◽  
Activation Process ◽  
Electrostatic Model ◽  
Partial Molal Volume ◽  
Tetraethylammonium Chloride ◽  
Molal Volume ◽  
Alkyl Ammonium

The solvent composition dependence of the partial molal volume of the transition state of benzyl chloride solvolysing in water–ethanol mixtures is compared with that of anilinium chloride and a number of quaternary alkyl ammonium chlorides. It is concluded that anilinium chloride is not a good electrostatic model for the benzyl chloride transition state even though it may be a fair structural model. The partial molal volume of tetraethylammonium chloride is very similar to that of the transition state suggesting that charge development in the activation process is far from being fully ionic.

scholarly journals Effect of MMT Clay Content on Thermal Behaviour of MDPE/MMT Nanocomposite

2010 ◽  
Vol 19 (5) ◽  
pp. 096369351001900
Author(s):  
J. Sargolzaei ◽  
M. Tavakol ◽  
Akbarabady
Keyword(s):  
Ammonium Salt ◽  
Room Temperature ◽  
Clay Content ◽  
Decomposition Temperature ◽  
Temperature Range ◽  
Air Atmosphere ◽  
Uniform Dispersion ◽  
Wide Range ◽  
Mmt Clay ◽  
Alkyl Ammonium

The thermal stability of medium-density polyethylene (MDPE)/Montmorillonite nanocomposite was studied by TGA and DSC methods in a wide range of temperature. The dispersion of the MMT clays on microscopic scales was examined using a Transmission electron microscopy (TEM). The mass loss from thermogravimetric analysis (TGA) was used to study decomposition temperature in a temperature range from room temperature to 800 °C and DSC was used to probe melting and crystallization in a temperature range from room temperature to 300°C. Simultaneous TGA made possible to show that non modified MMT clay and MMT clay modified with alkyl ammonium salt exhibit a significant stabilizing effect on MDPE macromolecules in air atmosphere and DSC shows natural MMT and MMT clay modified with alkyl ammonium salt exhibit a significant change in melting, crystallization, enthalpy and crystalline content of samples. TEM image shows uniform dispersion and intercalation of MMT clays in nanocomposites.

scholarly journals Interfacial Engineering of Perovskite Quantum-Dot Light-Emitting Devices Using Alkyl Ammonium Salt Layer

2018 ◽  
Vol 31 (3) ◽  
pp. 329-333
Author(s):  
Hinako Ebe ◽  
Yoshihito Takahashi ◽  
Jun Sato ◽  
Takayuki Chiba ◽  
Satoru Ohisa ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Ammonium Salt ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Interfacial Engineering ◽  
Salt Layer ◽  
Alkyl Ammonium

Charged functional group effects on a metal–organic framework for selective organic dye adsorptions

CrystEngComm ◽  
2015 ◽  
Vol 17 (44) ◽  
pp. 8418-8422 ◽  
Author(s):  
Hyungwoo Hahm ◽  
Sungjune Kim ◽  
Hyeonbin Ha ◽  
Suyeon Jung ◽  
Youngjo Kim ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Functional Group ◽  
Metal Organic Framework ◽  
Dye Adsorption ◽  
Organic Dye ◽  
Metal Organic ◽  
Alkyl Ammonium ◽  
Group Effects ◽  
Organic Framework

The quaternary N-alkyl ammonium salt functionality was introduced into MOF pores through a postsynthetic strategy, which allows a selective dye adsorption depending on its charge.

Br-containing alkyl ammonium salt-enabled scalable fabrication of high-quality perovskite films for efficient and stable perovskite modules

2019 ◽  
Vol 7 (47) ◽  
pp. 26849-26857 ◽  
Author(s):  
Zhongyuan Xu ◽  
Ruihao Chen ◽  
Yazhuo Wu ◽  
Ruiqin He ◽  
Jun Yin ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Large Area ◽  
High Quality ◽  
Tetrabutylammonium Salt ◽  
Alkyl Ammonium ◽  
Blade Coating

The incorporation of a Br-containing tetrabutylammonium salt into perovskite precursors demonstrates superior advantages in both crystallization and large-area uniformity control during the scalable blade-coating of perovskite films.

Influence of the purity of montmorillonite on its surface modification with an alkyl-ammonium salt

2016 ◽  
Vol 120 ◽  
pp. 111-120 ◽  
Author(s):  
Maryam Veiskarami ◽  
Mehdi Nasiri Sarvi ◽  
Ahmad Reza Mokhtari
Keyword(s):  
Surface Modification ◽  
Ammonium Salt ◽  
Alkyl Ammonium
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