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Chemistry International

Special issue IYQ in PAC

Published Oct 1, 2025• 0 citations
Publisher

Abstract

Abstract 2025 was proclaimed by the United Nations proclaimed the International Year of Quantum Science and Technology (IYQ). This year-long and worldwide initiative aims at increasing public awareness of the importance of quantum science and applications. As the world authority on chemical nomenclature and terminology, standardized methods for measurement, atomic weights and many other critically evaluated data, IUPAC is naturally a supporter. Compiled under the leadership of Russell Boyd and Manuel Yáñez acting as co-editors, a special issue of IUPAC journal Pure and Applied Chemistry (PAC) is dedicated to the celebration of IYQ.

DOI
10.1515/ci-2025-0415

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Abstract Chemistry is about the atom and molecule, motion of which follows quantum mechanics established 100 years ago by Werner Heisenberg, inspired by a number of milestone findings including Max Planck’s first quanta concept for black body radiation, Albert Einstein’s photon concept for photoelectric effect and oscillator quanta for heat capacity of solid, and Niels Bohr’s quantum model for atomic structure. Independently, inspired by Louis de Broglie’s particle-wave duality, Erwin Schrödinger established wave mechanics, which is shown to be equivalent to Heisenberg’s mechanics by Paul Dirac. The latter further established the relativistic quantum mechanics, and then claimed that the underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws lead to equations much too complicated to be soluble. In the occasion of celebrating The International Year of Quantum Science and Technology (IYQ 2025, quantum2025.org), we will present a heuristic review of the development of quantum theory and its application to chemistry, namely, quantum chemistry (QC). Then, we will discuss some of the current challenges and the future developments, especially on the quantum computing for quantum chemistry (QCQC).
Q uantum science is a hard nut to crack-even for the brightest physicists.But 2025 might offer a pivotal moment for raising public awareness of the field and its technological implications.The United Nations' declaration of the International Year of Quantum Science and Technology (IYQ) is sparking a burst of outreach activities, with 100 events (and counting) planned globally.The year was officially kicked off on February 4-5 at an inauguration ceremony held at the United Nations Educational, Scientific and Cultural Organization (UNESCO) headquarters in Paris (see Research News: Curtain Rises on the Year of Quantum).At the ceremony, UNESCO unveiled its IYQ mascot, Quinnie, created by Jorge Cham, aka, PHD Comics, in collaboration with us at Physics Magazine.The mascot was developed during brainstorming sessions for a series of animated cartoons, which we will release throughout the year [1].Harnessing Cham's Quinnie and her dual sister.Credit: J. Cham Quinnie surfing on a quantum wave function.Credit: J. Cham ability to explain the most complex scientific concepts through cartoons, we hope to communicate to the broadest possible audience what we know and, perhaps more importantly, what we don't know about quantum science.To us, Quinnie represents a young generation approaching quantum science with passion, ingenuity, and energy.We imagine her effortlessly surfing on quantum-mechanical wave functions and playfully engaging with the knottiest quantum ideas, from entanglement to duality.According to a worn-out quote by Richard Feynman: "If you think you understand physics.