无机有机-核壳材料研究进展

综述了近年来各种核壳材料的合成方法,包括聚合法layer-hy-layer(LbL)自组装技术、原位反应法等。并简要介绍了空心材料的制备及核壳材料的应用。     

智能高分子表面的设计及其在生物医学中的应用

一般高分子材料表面对外界刺激反应性较弱,但利用一些化学或物理方法可提高其响应性,使其智能化。本文介绍了近年来智能高分子表面的几种设计思路、响应机理及其在生物医用材料方面的应用,并且提出了今后的发展趋势。     

制备气相色谱仪的改进及应用研究进展

气相色谱已经成为一种常规的分析手段,但以制备为目的的气相色谱的应用还较少.目前尚没有商品化的制备气相色谱仪,需要对传统的分析型气相色谱仪加以改进,以达到高效分离制备目标化合物的目的.本文综述了国内外对制备气相色谱仪改进工作的研究进展,包括汽化室、色谱柱、分流装置、收集系统等的改进.另外,总结了制备气相色谱在各领域的应用...     

Functional Poly(ionic liquid) Porous Membranes: From Fabrications to Advanced Applications†

Polyelectrolyte porous membranes (PPMs) belong to the most interesting classes of materials, because the synergy of tunable pore sizes and charge nature of polyelectrolyte endow them with wide-ranging practical applications. However, owing to the water solubility and ionic nature of the polyelectrolytes, traditional polyelectrolytes are difficult to use in scalable preparation of high-quality PPMs through the well-developed industrial methods. Poly(ionic liquid)s (PIL) are a subclass of functional polyelectrolytes bearing ionic liquid groups in their repeating unites, inheriting the advantages of ionic liquids (ILs) and macromolecular architecture features. In recent years, along with rapid development of PIL materials chemistry, considerable and significant developments involving the novel preparation methods, and structure-property-function relationships of PPMs have been made. In this review, we highlight the latest discovery and proceedings of PPMs, particularly the advancements in how to tailor structures and properties of PPMs by rational structure design of PILs. The formation mechanisms of various PPMs were also discussed in detail from the viewpoint of PILs molecular structures. A future perspective of the challenges and promising potential of PPMs is cast on the basis of these achievements. We expect that these analyses and deductions will be useful for the design of useful PPMs and serve as a source of inspiration for the design of future multifunctional PPMs.      

A dual-functional chemosensor based on acylhydrazone derivative for rapid detection of Zn(II) and Mg(II): Spectral properties,recognition mechanism and application studies

In this work, an acylhydrazone derivative (QN62) was developed via the one-step condensation of 6-hydroxy-2-naphthoic hydrazide with quinoline-8-carboxaldehyde. The structure of the QN62 compound was characterized by ¹H NMR, ¹³C NMR, HR-MS (ESI), and X-ray crystallography. As a dual-functional turn-on fluorescence chemosensor, QN62 exhibited rapid recognition for Zn²⁺ in DMSO-H₂O (4:1, v/v) and Mg²⁺ in ethanol-H₂O (9:1, v/v). The enhancement in fluorescence detection was associated with the coordination reaction between QN62 and the target ions, which promoted intramolecular charge transfer and prevented the CN isomerization process. Simultaneously, a rapid color change from colorless to yellowish-green or yellow under UV light (365 nm) was easily visible to the naked eye. Under optimal conditions, the limit of detection and limit of quantification were 32.3 nM and 97.8 nM for Zn²⁺ and 16.1 nM and 48.9 nM for Mg²⁺, respectively. The recognition mechanism was reasonably speculated based on analysis of the Job’s plot, HR-MS, ¹H NMR, and density functional theoretical calculations. Utilizing silica-gel plates fabricated from the QN62 chemosensor, the visual and rapid identification of Zn²⁺ and Mg²⁺ was successfully achieved, which could provide a convenient approach for on-site detection in environmental fields. The QN62 chemosensor could also quantify trace amounts of Zn²⁺ and Mg²⁺ in water samples. Furthermore, the cell imaging experiments indicated that QN62 could effectively sense intracellular Zn²⁺ and Mg²⁺, providing potential applications in biological systems.