Results 101 to 110 of about 3,736,159 (294)

Chemical Sensors and Computer-Aided Analytical Chemistry

CHIMIA, 1997
A simplified thermodynamic model of potentiometric and optical ion sensor membranes allows to improve their properties and the measurement of complex formation constants in membrane phases.
Ernö Pretsch
doaj   +2 more sources

Influência de efeitos estéricos na hidrólise ácida de o-alquil acetais do benzaldeído [PDF]

, 2003
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.Investigação de efeitos estéricos sobre o centro reacional na hidrólise ácida de O-alquil acetais do benzaldeído ...
Belarmino, Alexanders Tadeu das Neves
core  

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Assessment of molecular interactions of l-ascorbic acid in presence of caffeine in aqueous medium using volumetric and FTIR methods

BMC Chemistry
Understanding the interactive behaviour of essential nutrients with ubiquitous stimulants is pivotal for predicting their fate and functionality in biological systems, pharmaceutical formulations and aqueous chemical environments.
Tanika Dutta, Malabika Talukdar, Sulochana Singh, Siddhartha Panda   +3 more
doaj   +1 more source

MRCI+Q study on spectroscopic parameters and molecular constants of X1Σ+ and A1Π electronic states of the SiSe molecule

Acta Physica Sinica, 2013
The potential energy curves (PECs) of X1Σ+ and A1Π electronic states of the SiSe molecule are calculated using the internally contracted multireference configuration interaction approach with the Davidson modification (MRCI+Q) with the correlation-consistent basis sets, aug-cc-pV5Z and aug-cc-pVQZ. In order to improve the quality of the PEC, the PEC is
null Xing Wei, null Liu Hui, null Shi De-Heng, null Sun Jin-Feng, null Zhu Zun-Lüe   +4 more
openaire   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

4-Bromobenzene Sulfonate Derivatives: Synthesis, Characterization, DFT and Molecular Docking Study

Acta Chimica Slovenica
4-bromobenzenesulfonate derivatives (I and II) were prepared and characterized by FTIR and NMR spectroscopic methods and density functional theory. Acceptable deviations were found where the scaled vibrational frequencies at B3LYP/6-311++G(d,p) were ...
Meryem Evecen, Fatih Celik, Yasemin Unver, Halil İbrahim Güler   +3 more
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

A spectroscopic study of sunscreens [PDF]

, 2000
Exposure to UV radiation is known to result in the development of skin cancer and the use of protectants m the form of topically applied sunscreens is becoming widespread.
Jones, Allison Elizabeth
core  

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source