Results 11 to 20 of about 103,389 (181)

Recent applications of tetramethylammonium hydroxide (TMAH) in the sample preparation for elemental analysis by spectroanalytical techniques

Advances in Sample Preparation
Application of tetramethylammonium hydroxide for the treatment of samples prior to elemental analysis over the last five years is approached in this review article.
Uillian Mozart Ferreira Mata Cerqueira, Juscelia Pereira Santos Alves, Walter Nei Lopes Santos, Bernardo da Silva Pita, Cleber Galvão Novaes, Sulene Alves Araújo, Marcos Almeida Bezerra   +6 more
doaj   +3 more sources

Dataset for density/temperature correlation of tetramethylammonium hydroxide solutions of various concentrations [PDF]

Data in Brief, 2022
Densities for various Tetramethylammonium hydroxide (TMAH) solutions at different temperatures have been determined based on Archimedes’ principle using a hydrostatic balance and a vitreous body with a defined volume. Due to the toxicity of the compound,
Josef Diebold, Yasmin Weiß, Stefan Zürcher, Magnus S. Schmidt   +3 more
doaj   +2 more sources

Tetramethylammonium hydroxide (TMAH) as an efficient catalyst for the one-pot synthesis of 1,2-dihydro-1-aryl- naphtho[1,2-e][1,3]oxazine-3-ones under solvent-free conditions [PDF]

Bulletin of the Chemical Society of Ethiopia, 2016
1,2-Dihydro-1 -arylnaphtho[1,2-e][1,3]oxazine-3-one derivatives were synthesized in high yields using an efficient and one-pot condensation of 2-naphthol, aromatic aldehydes and urea catalyzed by tetramethylammonium hydroxide (TMAH) under solvent-free ...
N. Montazeri, E. M. Nezhad
doaj   +2 more sources

Comparison of tetramethylammonium hydroxide (TMAH), trimethylsulfonium hydroxide (TMSH), and trimethylphenylammonium hydroxide (TMPAH) thermochemolysis for in situ space analysis of organic molecules in planetary environments

Talanta, 2023
One of the main objectives of present and future space exploration missions dedicated to astrobiology is the detection of organic molecules of interest for life (e.g. amino and fatty acids). With this aim, a sample preparation and a gas chromatograph (connected to a mass spectrometer) are generally used.
Boulesteix, David, Buch, Arnaud, Williams, A.J., He, Y., Freissinet, Caroline, Trainer, M.G., Stern, J.C., Szopa, Cyril   +7 more
core   +6 more sources

Analysis of aliphatic biopolymers using thermochemolysis with tetramethylammonium hydroxide (TMAH) and gas chromatography–mass spectrometry [PDF]

Organic Geochemistry, 1998
Selected aliphatic biopolyesters (cutins, cuticles and a suberin) isolated from di erent plants have been analyzed using thermochemolysis with tetramethylammonium hydroxide (TMAH). This method consists of a high-temperature saponification/transesterification, and yields methyl esters of fatty acids and the methyl ethers of alcohols, which are ...
Río Andrade, José Carlos del, Hatcher, Patrick G.   +1 more
openaire   +3 more sources

Effect of tetramethylammonium hydroxide/isopropyl alcohol wet etching on geometry and surface roughness of silicon nanowires fabricated by AFM lithography

Beilstein Journal of Nanotechnology, 2016
The optimization of etchant parameters in wet etching plays an important role in the fabrication of semiconductor devices. Wet etching of tetramethylammonium hydroxide (TMAH)/isopropyl alcohol (IPA) on silicon nanowires fabricated by AFM lithography is ...
Siti Noorhaniah Yusoh, Khatijah Aisha Yaacob   +1 more
doaj   +2 more sources

Underwater Plasma‐Driven Decomposition of Tetramethylammonium Hydroxide (TMAH) Under Different Applied Field Strengths [PDF]

Plasma Processes and Polymers
ABSTRACT Tetramethylammonium hydroxide (TMAH), a toxic and persistent compound widely used in semiconductor manufacturing, was degraded using underwater plasma at applied fields ranging from 0.8 to 10 kV mm⁻ 1 .
Ki‐Taik Lee, Hana Lim, Sung Cheol Park, Jin‐Young Bae, Sung‐Min Kim   +4 more
core   +3 more sources

Plasma‐Enabled Simultaneous Synthesis and Nano‐Anchoring of TiO2−x Nanolayers on Mesoporous Bio‐Silica for Effective Photodegradation of Tetramethylammonium Hydroxide

SusMat
Organic pollutants from semiconductor manufacturing pose significant threats to aquatic ecosystems and remain challenging to treat. To address these issues, mesoporous bio‐silica (diatomite) was employed as a platform material to accommodate titanium ...
Ali M. Abou‐Elanwar, Sunwoo Kim, So Young Lee, Jeongkyun Yu, Donguk Choi, Min Seob Kim, Chihyun Hwang, Hyungmin Park, Youngtai Noh, Nam Dong Kim, Ming Xie, Jiuyang Lin, Seongju Park, Youngjin Kim, Dong Han Seo   +14 more
doaj   +2 more sources

Integration of a microfluidic chip with multiplexed optical fluorescence detector through anisotropic etching of Si using Tetramethylammonium hydroxide (TMAH)

, 2016
Point of care testing (POCT) systems, are widely used to firstly, diagnose and secondly, monitor a number of illnesses and infectious diseases. This research aims to develop the integration between an optical fluorescence system and a microfluidic chip -
Changqing Liu (1249713), Sijung Hu (1250727), Hannah Robbins, Hannah Robbins (7206482), Tung T. Bui (7207244), Changqing Liu, Masahiro Aoyagi, Sijung Hu, Masahiro Aoyagi (2639044), Tung Bui   +9 more
core   +8 more sources

Molecular-Level Pore Engineering for Precise Separation via Active Solvent-Mediated Interfacial Polymerization. [PDF]

Adv Sci (Weinh)
We demonstrate that microemulsion solvents can actively template molecular‐level pores within selective layer during interfacial polymerization. By creating localized quasi‐homogeneous polymerization zones, the membrane achieved a 7.1‐fold enhancement in water permeance with increased selectivity.
Li F, Rajapakse RMG, Mou Y, Hou D, Yang M.   +4 more
europepmc   +2 more sources