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This article shows that the gas-phase entropy of molecules is proportional to the area of the molecules, with corrections for the different curvatures of the molecular surface. The ability to estimate gas-phase entropy by the area law also allows us to calculate molecular entropy faster and more accurately than currently popular methods of estimating molecular entropy with harmonic oscillator approximation. The speed and accuracy of our method will open up new possibilities for the explicit inclusion of entropy in various computational biology methods.
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http://dx.doi.org/10.3390/e26080688 | DOI Listing |
J Chem Phys
September 2025
Center for Advanced Structural Materials, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
Increasing evidences show the significance of low melting entropy in glass formation of substances. Our previous studies have uncovered the strong dependence between melting entropy in the eutectic mixtures and mixing enthalpy, which has been serving as an important reference for glass formation, showing that negative mixing enthalpy largely reduces the melting entropy. In this paper, we focused on the question as to how melting entropy is associated with another classical glass formation criterion of molecule/atom size difference of components.
View Article and Find Full Text PDFNat Mater
September 2025
Department of Physics and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, NC, USA.
The number of polymeric and small-molecular acceptors for organic photovoltaics has exploded in the past decade. As a result, physical insights and efforts aiming at elucidating the coupling between composition and behaviour are required more than ever. Here we present an encompassing study into the phase behaviour of 55 polymer:small-molecular acceptor blends, pivotal in determining device performance and stability.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Department of Chemical and Biomolecular Engineering, Department of Chemistry, Department of Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign,Urbana, Illinois 61801, United States.
Spontaneous chiral symmetry breaking remains a fascination in chemistry, biology, materials science, and even astronomy. Chiral symmetry breaking usually requires intrinsic molecular chirality or extrinsic chiral sources but remains rare in nonchiral systems. Here, we reveal a ubiquitous, entropy-driven chiral symmetry breaking mechanism observed in 22 out of 35 conjugated polymers in the absence of any chiral source─a phenomenon overlooked for decades.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands.
Multivalent binding and the resulting dynamical clustering of receptors and ligands are known to be key features in biological interactions. For optimizing biomaterials capable of similar dynamical features, it is essential to understand the first step of these interactions, namely the multivalent molecular recognition between ligands and cell receptors. Here, we present the reciprocal cooperation between dynamic ligands in supramolecular polymers and dynamic receptors in model cell membranes, determining molecular recognition and multivalent binding via receptor clustering.
View Article and Find Full Text PDFFront Neurosci
August 2025
Center for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi, India.
Amyloid-β (Aβ) is implicated in the pathophysiology of Alzheimer's disease (AD) and plays a significant role in neuronal degeneration. Aβ in solution is essential during the initial stages of developing lead compounds that influence Aβ fibrillation. The tendency of the Aβ peptide to misfold in solution is correlated with the etiology of AD.
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