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Chameleon-inspired molecular imprinted polymer with bicolored states for visual and stable detection of diethylstilbestrol in water and food samples.
Food Chem
December 2024
Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, 300070 Tianjin, People's Republic of China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin Medical University, Tianjin, People's Republic of China. Electronic address:
A novel biomimetic molecular imprinted polymer chip with fluorescence (FL) and structural (STR) states, inspired by color patterns of chameleon skin, is fabricated for detecting diethylstilbestrol (DES). The chip features a regularly structured, non-closed-packed (NCP) colloidal photonic crystal (CPC) lattice made monodisperse MIP spheres containing fluorescence poly ionic liquid (FPIL) pigments. The FL color originates from FPIL pigments and is further enhanced by the Purcell effect, while the STR color results from the periodic arrangement of the NCP CPC structure.
View Article and Find Full Text PDFA practical post-Hartree-Fock approach describing open-shell metal cluster-support interactions. Application to Cu adsorption on benzene/coronene.
RSC Adv
October 2024
Institute of Fundamental Physics (AbinitSim Unit ABINITFOT Group), Consejo Superior de Investigaciones Científicas (CSIC) Madrid Spain
Current advances in synthesizing and characterizing atomically precise monodisperse metal clusters (AMCs) at the subnanometer scale have opened up fascinating possibilities in designing new heterogeneous (photo)catalysts as well as functional interfaces between AMCs and biologically relevant molecules. Understanding the nature of AMC-support interactions at molecular-level is essential for optimizing (photo)catalysts performance and designing novel ones with improved properties. Møller-Plesset second-order perturbation theory (MP2) is one of the most cost-efficient single-reference post-Hartree-Fock wave-function-based theories that can be applied to AMC-support interactions considering adequate molecular models of the support, and thus complementing state-of-the-art dispersion-corrected density functional theory.
View Article and Find Full Text PDFEffects of Size Polydispersity and Dense Media on Quantitative Ultrasound Estimates.
IEEE Trans Ultrason Ferroelectr Freq Control
May 2024
Quantitative ultrasound (QUS) techniques based on the backscatter coefficient (BSC) aim to characterize the scattering properties of biological tissues. A scattering model is fit to the measured BSC, and the fitted QUS parameters can provide local tissue microstructure, namely, scatterer size and acoustic concentration. However, these techniques may fail to provide a correct description of tissue microstructure when the medium is polydisperse and/or dense.
View Article and Find Full Text PDFUnderstanding droplet breakup in a post-array device with sheath-flow configuration.
Lab Chip
November 2023
Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan.
Article Synopsis
- Microfluidic post-array devices can create uniform emulsion droplets quickly by using posts to break droplets but have limitations due to a lack of understanding about how post design affects droplet size.
- Researchers studied how droplets break apart in these devices using different flow rates and found that the balance of fluid volumes significantly impacts droplet size, even if their viscosities are similar.
- Their findings revealed two distinct breakup modes and established a relationship that can predict droplet generation, enhancing the applicability of post-array devices for effective and continuous emulsification processes.
High-level ab initio evidence of bipyramidal Cu clusters as fluxional Jahn-Teller molecules.
Chemphyschem
October 2023
Instituto de Física Fundamental (AbinitSim Unit), CSIC, Serrano 123, 28006, Madrid, Spain.
Novel highly selective synthesis techniques have enable the production of atomically precise monodisperse metal clusters (AMCs) of subnanometer size. These AMCs exhibit 'molecule-like' structures that have distinct physical and chemical properties, significantly different from those of nanoparticles and bulk material. In this work, we study copper pentamer Cu clusters as model AMCs by applying both density functional theory (DFT) and high-level (wave-function-based) ab initio methods, including those which are capable of accounting for the multi-state multi-reference character of the wavefunction at the conical intersection (CI) between different electronic states and augmenting the electronic basis set till achieving well-converged energy values and structures.
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