Light-fueled dynamic covalent crosslinking of single polymer chains in non-equilibrium states†

Abstract While polymer synthesis proceeds predominantly towards the thermodynamic minimum, living systems operate on the reverse principle – consuming fuel to maintain a non-equilibrium state. Herein, we report the controlled formation of 3D macromolecular architectures based on light-fueled covalent non-equilibrium chemistry. In the presence of green light (525 nm) and a bivalent triazolinedione (TAD) crosslinker, […]

Continue Reading

When chemistry with green light mimics what happens in life

Scientists frequently look at how molecules behave in nature to help them design chemical processes, and that’s what QUT and Ghent University researchers did to create a green light-stabilised 3D polymer structure that unfolds itself when left in darkness. First published 14 December 2020 The team has reported on this world-first example of a reversible, […]

Continue Reading

Hydrogen Power: Moving the World into Clean Energy

By: Robin Fearon Hydrogen gas is the most abundant element in the universe. It is an odorless, non-toxic, non-corrosive gas that burns easily in air to produce a large amount of heat, zero greenhouse gases, and water pure enough to drink as a by-product. The ‘hydrogen economy’ is seen by many as a natural replacement […]

Continue Reading

Uranium-series (U-series) dating method

Uranium dating is one of the ways of determining the age of ancient objects, even one million years old, by measuring how much of the following are present in them: the amount of radioactive isotopes of uranium, and the amount of other materials into which the radioactive isotopes would decompose Modern Uranium-series methods use decay chains and […]

Continue Reading

Carbon Dating

How Does Carbon Dating Work Carbon-14 is a weakly radioactive isotope of Carbon; also known as radiocarbon, it is an isotopic chronometer. C-14 dating is only applicable to organic and some inorganic materials (not applicable to metals). Gas proportional counting, liquid scintillation counting and accelerator mass spectrometry are the three principal radiocarbon dating methods. What is […]

Continue Reading