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Radical (chemistry)

In chemistry, radicals (often referred to as free radicals) are atomic or molecular species with unpaired electrons on an otherwise open shell configuration.

Note: The above text is excerpted from the Wikipedia article "Radical (chemistry)", which has been released under the GNU Free Documentation License.

For more information, see the following related content on ScienceDaily:

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A 'Toolbox of Biocatalysts' Improves Control Over Free Radicals

July 21, 2023 — One of the central challenges for synthetic chemists is to impose control over free radicals. Highly reactive molecules with an unpaired electron, free radicals may be familiar to you; these are the ...

A Radical New Approach in Synthetic Chemistry

Nov. 23, 2022 — Scientists have measured how unpaired electrons in atoms at one end of a molecule can drive chemical reactivity on the molecule's opposite side. This work shows how molecules containing these ...

Researchers Build Long, Highly Conductive Molecular Nanowire

July 7, 2022 — Researchers announced today that they have built a nanowire that is 2.6 nanometers long, shows an unusual increase in conductance as the wire length increases, and has quasi-metallic properties. Its ...

Switching 'Spin' on and Off (and Up and Down) in Quantum Materials at Room Temperature

Aug. 16, 2023 — Researchers have found a way to control the interaction of light and quantum 'spin' in organic semiconductors, that works even at room ...

New, Simple and Accessible Method Creates Potency-Increasing Structure in Drugs

Aug. 3, 2023 — Chemical structures called cyclopropanes can increase the potency of many drugs, but traditional methods to create this structure require highly reactive -- potentially explosive -- ingredients. Now, ...

How Is Haze Formed?

Mar. 31, 2022 — Haze is formed when a cocktail of various gaseous pollutants is oxidized and forms particulate matter diffusing sunlight. This process is mainly mediated by hydroxyl radicals (OH), and researchers ...

New Aluminium Radical Battery Promises More Sustainable Power

July 3, 2023 — Scientists are hoping to make the world's first safe and efficient non-toxic aqueous aluminum radical battery. Scientists have now reported the first stage of developing these novel ...

Eco-Friendly Enzyme to Create Key Chemical Building Blocks

July 31, 2023 — Using energy from light to activate natural enzymes can help scientists create new-to-nature enzymatic reactions that support eco-friendly biomanufacturing -- the production of fuels, plastics, and ...

Air Chemistry Data from South Korea Field Study Puts Models to the Test

Feb. 15, 2022 — An international effort to measure air quality in South Korea, a region with complex sources of pollution, may provide new insights into the atmospheric chemistry that produces ozone pollution, ...

Synthesis of Potent Antibiotic Follows Unusual Chemical Pathway

Jan. 18, 2021 — Images of a protein involved in creating a potent antibiotic reveal the unusual first steps of the antibiotic's synthesis. The improved understanding of the chemistry behind this process could ...

Matter & Energy News

December 2, 2023

Printed Robots With Bones, Ligaments, and Tendons

Nov. 15, 2023 — For the first time, researchers have succeeded in printing a robotic hand with bones, ligaments and tendons made of different polymers using a new laser scanning technique. The new technology makes it possible to 3D print special plastics with ...

'Cooling Glass' Blasts Building Heat Into Space

Nov. 13, 2023 — Researchers aiming to combat rising global temperatures have developed a new 'cooling glass' that can turn down the heat indoors without electricity by drawing on the cold depths of space. The new technology, a microporous glass coating, can lower ...

Photonics Team Develops High-Performance Ultrafast Lasers That Fit on a Fingertip

Nov. 9, 2023 — Scientists demonstrate a novel approach for creating high-performance ultrafast lasers on nanophotonic chips. The new advance will enable pocket-sized devices that can perform detailed GPS-free ...

450-Million-Year-Old Organism Finds New Life in Softbotics

Nov. 6, 2023 — Researchers have used fossil evidence to engineer a soft robotic replica of pleurocystitids, a marine organism that existed nearly 450 million years ago and is believed to be one of the first echinoderms capable of movement using a muscular ...

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A Color-Based Sensor to Emulate Skin's Sensitivity

Dec. 1, 2023 — In a step toward more autonomous soft robots and wearable technologies, researchers have created a device that uses color to simultaneously sense multiple mechanical and temperature ...

Photonic Chip That 'Fits Together Like Lego' Opens Door to Semiconductor Industry

Dec. 1, 2023 — A new semiconductor architecture integrates traditional electronics with photonic, or light, components could have application in advanced radar, ...

Researchers Have Taught an Algorithm to 'Taste'

Dec. 1, 2023 — Incorporating human tastes into artificial intelligence makes it easier for wine buyers thirsting for the right wine. Researchers have shown that AI can accurately predict individual wine ...

To Help Autonomous Vehicles Make Moral Decisions, Researchers Ditch the 'Trolley Problem'

Dec. 1, 2023 — Researchers have developed a new experiment to better understand what people view as moral and immoral decisions related to driving vehicles, with ...

Scientists Use A.I.-Generated Images to Map Visual Functions in the Brain

Nov. 30, 2023 — Researchers have demonstrated the use of AI-selected natural images and AI-generated synthetic images as neuroscientific tools for probing the visual processing areas of the brain. The goal is to ...

Smart Microgrids Can Restore Power More Efficiently and Reliably in an Outage

Nov. 30, 2023 — A new AI model that optimizes the use of renewables and other energy sources outperforms traditional power restoration techniques for islanded ...

Researchers Develop Novel Deep Learning-Based Detection System for Autonomous Vehicles

Nov. 30, 2023 — Autonomous vehicles require object detection systems to navigate traffic and avoid obstacles on the road. However, current detection methods often ...

Progress Toward Improved Vaccines

Nov. 30, 2023 — To ensure that vaccines provide strong and lasting immunization, it is often necessary to supplement the actual vaccine (antigen) with additives that stimulate the immune system: adjuvants. Today, ...

Scientists Build Tiny Biological Robots from Human Cells

Nov. 30, 2023 — Scientists have created tiny moving biological robots from human tracheal cells that can encourage the growth of neurons across artificial 'wounds' in the lab. Using patients' own cells could permit ...

Unsafe Lead Levels in School Drinking Water: New Study IDs Building Risk Factors

Nov. 30, 2023 — Civil and environmental engineers have determined the factors that may help identify the schools and daycare centers at greatest risk for elevated ...