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Chemistry Preprint PDF DOI

The Great Chicken-and-Egg of Chemistry: Bonding vs. Stability Revisited

Cherif F. Matta · 2026

The chemical bond is a central organizing concept in chemistry, yet it is absent from the molecular Hamiltonian and no "bond operator" exists. Bonding is therefore not a primitive physical entity but …

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Chemistry Preprint PDF DOI

Excitation of Low-Frequency Modes and the Effects of Protein Dynamics on Spectral Densities of Bacteriochlorophyll Molecules

Sayan Maity, Tristan A. Mauck, Ulrich Kleinekathofer · 2026

In the theory of open quantum systems, spectral densities are key quantities for modeling the dynamics and spectroscopic properties of the system under investigation. In the case of light-harvesting c…

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Chemistry Preprint PDF DOI

Thermal conductivity of aligned polymers with kinks

Igor V. Parshin, Igor V. Rubtsov, Alexander L. Burin · 2026

Thermal conductivity of aligned polymer molecules can be exceptionally high along the alignment direction due to energy transport through strong covalent bonds. At the same time, it is highly sensitiv…

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Chemistry Preprint PDF DOI

Effects of Porous Media Properties and Flow Environment on Drug Release from Porous Implants

Pawan Kumar Pandey, KVS Chaithanya, Prateek K. Jha · 2026

Drug-Filled Porous Implants (DFPIs) are an innovative solution for delivering drugs in a controlled and sustained manner to target sites. To optimize their performance across various physiological con…

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Chemistry Preprint PDF DOI

Charge order, domain order, ideal mixing and absence of demixing in 2D binary mixtures of alcohols

Lydia Chelli, Aurelien Perera · 2026

Binary mixtures of two dimensional, site-based models of alcohols are investigated by computer simulations, with a focus on ideal mixing, local clustering and miscibility trends. Four representative s…

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Chemistry Preprint PDF DOI

Molecular dynamics simulations of Nafion thin films at a platinum catalyst surface: Correlating structure with charging behaviour

Dustin Vivod, Binny A. Davis, Tobias Binninger, Michael Eikerling · 2026

Electrocatalysis is greatly influenced by the local reaction environment, which is governed by the structure of the catalyst, the distribution of the electrolyte, and the local electric field. In cata…

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Chemistry Preprint PDF DOI

How is a gas sensor poisoned by volatile methylsiloxanes?

Heng Liu, Bingxin Yang, Yiming Lu, Yuan Wang, Xue Jia, Long Luo, Hao Li · 2026

Volatile methyl siloxanes (VMSs), widely present in consumer and industrial products, have attracted increasing concerns due to their persistence, bioaccumulation behavior, and adverse health effects.…

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Chemistry Preprint PDF DOI

Predicting Solvation Free Energies of Molecules and Ions via First-Principles and Machine-Learning Molecular Dynamics

Junting Yu, Shuo-Hui Li, Ding Pan · 2026

The solvation free energy (SFE) of molecules and ions is a fundamental property governing their solvation behavior and solubility. Molecular simulations offer a route to compute SFEs using alchemical …

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Chemistry Preprint PDF DOI

Effective theory of quantum phases in the dipolar planar rotor chain

Estevao V.B. de Oliveira, Muhammad Shaeer Moeed, Pierre-Nicholas Roy · 2026

In this work, we develop a theoretical description of the collective behavior of interacting dipolar planar rotors by using time independent perturbation theory and a small angle quadratic approximati…

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Chemistry Preprint PDF DOI

Ultrafast nonadiabatic dynamics of tetraphenylsubstituted nitrogen-based heterocycles

Javier Hernandez-Rodriguez, Alberto Martin Santa Daria, Susana Gomez-Carrasco, Sandra Gomez · 2026

Tetraphenylpyrazine (TPP) and 2,3,4,5-tetraphenyl-1H-pyrrole (TePP) are closely related heterocycles bearing four phenyl substituents, whose structural similarity makes them a useful pair for comparin…

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Chemistry Preprint PDF DOI

Host-guest co-amorphous structure revealed by the suppression of the first sharp diffraction peak in isotactic poly(4-methyl-1-pentene)

Tomoki Ogihara, Yusuke Hiejima, Ayano Chiba · 2026

While host-guest co-crystals are well established, and co-amorphous solids are recognized in materials science, the concept of a host-guest co-amorphous structure remains largely unexplored. A potenti…

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Chemistry Preprint PDF DOI

Linear and nonlinear vibrational excitation driven by molecular polaritons

Wenxiang Ying, Carlos M. Bustamante, Franco P. Bonafe, Richard Richardson, Michael Ruggenthaler, Maxim Sukharev, Angel Rubio, Abraham Nitzan · 2026

Following our recent numerical study [arXiv:2601.16299 (2026)], we investigate vibrational excitation induced by transient optical driving in molecular ensembles strongly coupled to a cavity mode usin…

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Chemistry Preprint PDF DOI

Atomistic Modeling of Methane and Carbon Dioxide Structure I Gas Hydrates Under Pressure: Guest Effects and Properties

Samuel Mathews, Xiaodan Zhu, Andr'e Guerra, Phillip Servio, Alejandro D. Rey · 2026

Gas hydrates are potential candidates in future energy sources while simultaneously providing structures with extensive applications in carbon capture and storage, gas transport, and important separat…

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Chemistry Preprint PDF DOI

Transferable excited-state dynamics enable screening of fluorescent protein chromophores

Rhyan Barrett, Sophia Wesely, Julia Westermayr · 2026

Transferable excited-state dynamics offer a route to efficient screening of photophysical behavior across molecular systems, but conventional nonadiabatic simulations remain prohibitively expensive. H…

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Chemistry Preprint PDF DOI

A new framework for atom-resolved decomposition of second-harmonic generation in nonlinear-optical crystals

YingXing Cheng, Congwei Xie, Zhihua Yang, Shili Pan · 2026

In this work, we develop a new framework for computing atom-resolved contributions to optical properties based on atoms-in-molecules (AIM) schemes. The formalism is independent of the specific AIM met…

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Chemistry Preprint PDF DOI

VIANA: character Value-enhanced Intensity Assessment via domain-informed Neural Architecture

Luana P. Queiroz, Icaro S. C. Bernardes, Ana M. Ribeiro, Bernardo M. Aguilera-Mercado, Idelfonso B. R. Nogueira · 2026

Predicting the perceived intensity of odorants remains a fundamental challenge in sensory science due to the complex, non-linear behavior of their response, as well as the difficulty in correlating mo…

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Chemistry Preprint PDF DOI

Investigating the Electrochemical Double Layer with Quantum-Chemical Simulations and Implicit Solvation Models

Alessandro Mangiameli, Christopher J. Stein · 2026

We assess the dielectrically consistent reference interaction site model (DRISM) as an implicit electrolyte framework for modeling the electrochemical double layer, and compare it with the Poisson-Bol…

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Chemistry Preprint PDF DOI

Quantum coherence governs macroscopic polymorphism in organic semiconductors

Hai Wang, Tianhong Huang, Jiawei Chang · 2026

The wave-particle duality of massive macromolecules -- such as the fullerene C$_{60}$ -- is a well-established quantum phenomenon. However, whether the quantum behavior of large organic molecules acti…

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Chemistry Preprint PDF DOI

Microscopic Structure and Dynamics of Interfacial Water at Fluorinated vs Nonfluorinated Surfaces -- Insights from Ab-Initio Simulations and IR Spectroscopy

Maximilian R. Becker, Ruben Cruz, Kenichi Ataka, Joachim Heberle, Roland R. Netz · 2026

Per- and polyfluoroalkyl substances are a class of synthetic chemical compounds widely used as coatings to lower surface energies. Yet the microscopic mechanisms of their weak interaction with water a…

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Chemistry Preprint PDF DOI

Reaching for the performance limit of hybrid density functional theory for molecular chemistry

Jiashu Liang, Martin Head-Gordon · 2026

Density functional theory (DFT) offers an exceptional balance between accuracy and efficiency, but practical density functional approximations face an unavoidable trade-off among simplicity, accuracy,…

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