Developing new adsorbents and studying their adsorption mechanisms can greatly assist in addressing environmental pollution issues.Herein, the maltodextrin-based nanosponges (MD-SPs) were facilely synthesized by esterification reaction at room temperatureThe porous features, nanostructure, and swelling capacities of the resulting MD-SPs can be regulated by altering the crosslinking agent, which controls the adsorption properties.Using nine cationic dyes as model adsorbates, the results showed that MD-SPs could adsorb a large amount of cationic dyes in a short time.Especially, MD-SP-1 could rapidly adsorb over 90% of most cationic dyes within 3 min, and the maximal adsorption quantity (Qm) of cationic red X-GRL (CRX) was as high as 2137.81 mg/g.The adsorption behaviors were meticulously investigated by multiple adsorption kinetic and thermodn. models.Furthermore, the integrated anal. of exptl. and theor. calculations results demonstrated that the electrostatic force, hydrogen bonding, hydrophobic interaction, cation-π interaction, and π-π stacking may collectively facilitate the capture of dye mols.Notably, the absorbent offered excellent anti-interference capabilities, high stability, and reusability, making it an ideal adsorbent for the rapid and batch treatment of dye wastewater.These discoveries may provide valuable references for the theor. and practical study of adsorbents and offer new insights into the development of advanced maltodextrin-based adsorbents.

2024-10-01·ANALYTICAL CHEMISTRY

Multifunctional Ethyl Violet@NH₂-MIL-88B(Fe) Hybrids: CRISPR-Cas12a-Assisted PEC-FL-CL Triple-Mode Sensitive Detection of HPV-16

Article

作者: Wang, Huan ; Du, Cuicui ; Zheng, Hejie ; Zhang, Xiaohua ; Chen, Jinhua

The multimode assay based on multiple response mechanisms has received great attention to effectively improve the accuracy of a sensing platform. However, multifunctional sensing materials for simultaneously satisfying the multiple-mode detections are still in shortage due to the incompatibility of the signal transduction mechanisms in different modes. Here, taking human papillomavirus 16 (HPV-16) DNA (TDNA) as the model due to its important role in cervical cancer, a novel multifunctional material, ethyl violet (EV)@NH₂-MIL-88B(Fe) (ENM) hybrids, have been successfully prepared, which could simultaneously satisfy CRISPR-Cas12a-assisted photoelectrochemical (PEC)-fluorescent (FL)-colorimetric (CL) triple-mode detection of TDNA. Based on the TDNA-induced trans-cleavage ability of CRISPR-Cas12a and efficient separation of magnetic beads, ENM was obtained from the single-stranded DNA-surrounded streptavidin-modified magnetic beads-ENM (SMB-ssDNA-ENM) and decomposed by pyrophosphate to get free EV, 2-aminoterephthalic acid (NH₂-BDC), and Fe³⁺. Thus, TDNA was sensitively detected based on the EV-enhanced PEC signal of SnS₂ nanosheets (PEC mode), fluorescent signal of NH₂-BDC (FL mode), and characteristic absorption peak at about 720 nm of Fe³⁺-induced Prussian blue (PB) (CL mode). The designed PEC-FL-CL triple-mode biosensing platform had good performance for the detection of TDNA with a wide linear range (0.1 fM-100 nM) and ultralow detection limits (0.07 fM for PEC, 0.03 fM for FL and 0.09 fM for CL). Additionally, the developed PEC-FL-CL triple-mode biosensing platform has great potential for applications in early disease diagnosis and bioanalysis, as it can be easily extended to other DNA assays through modification of the crRNA sequence within the CRISPR-Cas12a system.

2024-08-01·EUROPEAN POLYMER JOURNAL

Novel amphipathic photoinitiating systems utilizing ethyl violet for acrylate and thiol-based click photopolymerization under 630 nm and 450 nm LED

作者: Xin, Yangyang ; He, Xianglong ; Shao, Yayu ; Jin, Zehao ; Zou, Yingquan

We conducted the first-ever investigation on the use of amphipathic triphenylmethane dyes ethyl violet (EV), in combination with iodonium salts (Iod) and sodium tetraphenylborate (STPB), as novel visible light photoinitiating systems (PISs), for initiating oil-based photopolymerization of acrylate and thiol-ene, as well as water-based photopolymerization, under 630 nm and 450 nm light-emitting diodes (LED) irradiationThe polymerization kinetics verified the efficient initiation of the EV/STPB/Iod system under two light sources.Differential scanning calorimetry (DSC) and thermal imaging tests further confirmed the crucial role of light in the polymerization process.The potential photolysis mechanism of these systems containing EV was explored through steady-state photolysis, liquid chromatog.-mass spectrometry (LC-MS), and ESR (ESR).This research not only offers a viable approach for developing PISs used for LED photopolymerization technol. but also contributes to the development of water-based photopolymerization

100 项与 Ethyl violet 相关的药物交易

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