Results 61 to 70 of about 132,748 (328)

Flexible Polypyrrole‐Based pH Sensors via Oxidative Chemical Vapor Deposition

open access: yesAdvanced Healthcare Materials, EarlyView.
Oxidative chemical vapor deposition (oCVD) of polypyrrole (PPy) thin films yields flexible, electrically conductive, and biocompatible pH sensors for monitoring on‐skin biological events. The highly sensitive, oCVD PPy skin‐conformal sensors enable real‐time, spatially resolved sensing of dynamic pH changes within physiologically relevant ranges (4–9 ...
Adrivit Mukherjee   +15 more
wiley   +1 more source

Effects of Hevea brasiliensis Intercropping on the Volatiles of Pandanus amaryllifolius Leaves

open access: yesFoods, 2023
Pandanus amaryllifolius Roxb. is a special tropical spice crop resource with broad development prospects. It is widely cultivated under a Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.
Ang Zhang   +9 more
doaj   +1 more source

The D-ring, Not the A-ring, Rotates in Synechococcus OS-B' Phytochrome [PDF]

open access: yes, 2014
Phytochrome photoreceptors in plants and microorganisms switch photochromically between two states, controlling numerous important biological processes.
Borucki   +40 more
core   +2 more sources

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

The Abiotic Formation of Pyrrole under Volcanic, Hydrothermal Conditions—An Initial Step towards Life’s First Breath?

open access: yesLife, 2021
Porphyrins, corrins, and tetrapyrroles constitute macrocycles in essential biomolecules such as heme, chlorophyll, cobalamin, and cofactor F430.
Christian Seitz   +2 more
doaj   +1 more source

Correlation of vibrational excitations and electronic structure with submolecular resolution [PDF]

open access: yes, 2019
The detection of vibrational excitations of individual molecules on surfaces by scanning tunneling spectroscopy does not obey strict selection rules but rather propensity rules. The experimental verification of these excitations is challenging because it
Czekelius, Constantin   +6 more
core   +2 more sources

Label-free impedimetric biosensor for Salmonella Typhimurium detection based on poly [pyrrole-co-3-carboxyl-pyrrole] copolymer supported aptamer.

open access: yesBiosensors & bioelectronics, 2016
The Gram-negative bacterium, Salmonella Typhimurium (S. Typhimurium) is a food borne pathogen responsible for numerous hospitalisations and deaths all over the world.
Elham Sheikhzadeh   +4 more
semanticscholar   +1 more source

Substituted Pyrroles [PDF]

open access: yesMolecules, 2000
A stepwise synthesis of a-unsubstituted pyrroles with desired substituents in the b-positions of the ring has been devised.
Mamardashvili, N. Zh.   +2 more
openaire   +2 more sources

Diethyl pyrrole-2,5-dicarboxylate [PDF]

open access: yesMolbank, 2020
The title compound was obtained in moderate yield by a new and unexpected base-induced ring contraction from a 1,4-thiazine precursor. Its X-ray structure showing hydrogen bonded dimers was compared with those of other crystallographically characterised 2-acylpyrroles.
R. Alan Aitken   +3 more
openaire   +4 more sources

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

open access: yesAdvanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong   +3 more
wiley   +1 more source

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