Recent progress on switchable rotaxanes

Switchable rotaxanes are currently attracting considerable attention from chemists, physicists and materials scientists because of their potential to perform relative inter-component positional changes in response to external stimuli and the potential applications in the fields such as molecular machines, molecular switches, molecular logic gates and memory devices. This tutorial review summarizes recent work on switchable rotaxanes and their potential applications.     

壳核结构纳米催化剂的研究进展(英文)

<正>1.Introduction During the past few decades,there have been comprehensive studies on nanocatalysts with many innovative advances in the precise manipulation of their structure and morphology on a nanometer scale by both chemists and material scientists[1].In comparison to bulk catalysts,nanocatalysts have a high surface-to-volume ratio due to the small     

Recent progress on olefin polymerization catalysts

Recent progress on metallocene catalysts is reviewed. This consists for the main part of research activities in metallocene catalysts and their polymerization performances (ethylene polymerization, propylene polymerization, styrene polymerization). In addi-tion, the computational design of metallocene catalysts and the commercial status of metallocene technologies in Japan are described.     

Recent progress on DNA block copolymer

Organic polymers are combined with DNA resulting DNA block copolymers (DBCs) that can simultaneously show the properties of the polymer and DNA. We will discuss some examples of recent developments in the syntheses, structure manipulations, and applications of DBCs.     

Recent progress on multidimensional construction of helicenes

Helicenes with unique π-conjugated helical structure and excellent chiroptical properties have received more and more attention. In this review, the idea of multidimensional construction of helicenes and their derivatives was proposed, and the related recent progress was summarized comprehensively.     

Recent progress on first-principles simulations of voltammograms

In this review article, we provide a brief summary of recent models and applications using first-principles methods to simulate cyclic voltammograms and linear sweep voltammograms. Electrochemical processes considered include hydrogen/hydroxyl adsorption, higher order anion adsorption, and electrocatalytic reactions. Reasonable agreement between experiment and theory is achieved in most systems, and we discuss approximations used and routes for improving the predictive power and accuracy of simulated voltammograms.     

Recent progress on polymer-based fluorescent and colorimetric chemosensors

Recently, fluorescent or colorimetric chemosensors based on polymers have attracted great attention due to several important advantages, such as their simplicity of use, signal amplification, easy fabrication into devices, and combination of different outputs, etc. This tutorial review will cover polymer-based optical chemosensors from 2007 to 2010.     

NO分解催化剂的研究进展

本文对用于NO直接催化分解的贵金属、金属氧化物、钙钛矿型复合金属氧化物、分子筛和碳氮化合物5种代表性催化材料上NO的催化分解性能及反应机理进行了综述.介绍了各种催化材料在用于NO分解反应中所取得的成就和存在的问题.此外,也对计算机模拟技术在NO催化分解中的应用进行了简单介绍,说明计算机技术是一种重要的实验研究辅助手段,有助于对实验现象的理解并为开发新型催化材料提供理论指导.     

一类新型大环内酯: 树脂糖苷的研究进展

本文简单地介绍了近年来有关旋花科植物中主要活性成分-树脂糖苷的分离、结构鉴定、合成及生物活性研究的进展。     

Recent progress in capillary electrochromatography

Capillary electrochromatography (CEC) continues to captivate many separation scientists. A remarkable activity is apparent from the numerous publications in the literature using CEC. A review of the most recent progress in CEC is presented herein, covering an extensive fraction of the literature on CEC published from the year 1997 until the beginning of 2000. Most of the recent developments have concentrated on column technology.     

Recent progress in capillary isotachophoresis

This article is a continuation of previous reviews and summarizes the progress of analytical capillary isotachophoresis in the years 1997-1999. Papers reviewed include theoretical and methodological aspects as well as analytical applications. Included are also papers using isotachophoresis and/or isotachophoretic principles as part of multidimensional separation schemes.     

Recent progress in theranostic microbubbles

Ultrasonography is an important complement to clinical diagnosis, and the application of microbubbles effectively improved diagnostic accuracy in echography. In scientific research, the sizes of microbubbles range from nanometers to microns. By optimizing the fabrication process, bubble sizes and ultrasound parameters, microbubbles can also be used for drug delivery and therapeutic monitoring. In this review,we summarize the recent advances in the diagnosis and treatment of microbubbles accordin...     

Recent progress on direct catalytic asymmetric vinylogous reactions

Direct catalytic asymmetric vinylogous reaction serves as a powerful tool to introduce stereocenter(s) at the γ- or/and even more remote position(s) of the vinylogous products in an atom-economical and efficient way. A variety of direct catalytic asymmetric vinylogous reactions with broad substrate scope and mild reaction conditions has been developed. Both metal catalysis and organocatalysis contributed in this field and led to the vinylogous products in high stereoselectivity. These vinylogous reactions provided efficient pathways for the synthesis of highly functionalized optically pure compounds, especially these with potential biological activity and pharmacological activity. This digest paper mainly focuses on the most recent developments in this field, including both nucleophilic addition and nucleophilic substitution.     

碳锂化反应的研究进展

介绍了近年来碳锂化反应在分子间和分子内以及不对称反应方面的研究进展。     

Recent progress in titration calorimetry

Research developments in titration calorimetry over the past ten years by personnel at the Thermochemical Institute have resulted in new techniques and instrumentation that have greatly increased the usefulness of calorimetry in the study of chemical problems. During this time, problems associated with the components of the calorimeter (i.e., constant temperature bath, constant rate buret, reaction vessel, temperature sensing circuit, and data analysis procedure) have been solved so that the continuous titration method now gives results comparable in accuracy to those obtained with conventional solution calorimeters. These developments have opened new avenues of research in the fields of biochemistry, microbiology, and environmental analysis.

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Zusammenfassung Die Fortschritte der Forschung auf dem Gebiete der Titrationskalorimetrie, welche in den vergangenen Jahren von Mitarbeitern des Thermochemischen Instituts erreicht worden sind, führten zu neuen Techniken und neuer Instrumentation, die die Einsatzfähigkeit der Kalorimetrie zur Untersuchung chemischer Probleme wesentlich erhöhten. Während dieser Zeit wurden Probleme in Zusammenhang mit den Bestandteilen des Kalorimeters (d.h. Konstanttemperaturbad, Burette mit konstanter Geschwindigkeit, Reaktionsbehälter, Temperatur, Wärmefühler-Stromkreis und Datenverarbeitungsvorgang) gelöst, so daß die kontinuierliche Titrationsmethode jetzt Ergebnisse von einer Genauigkeit liefert, welche mit der in herkömmlichen Lösungskalorimetern erhaltenen vergleichbar ist. Diese Entwicklungsarbeit eröffnet neue Wege der Forschung auf den Gebieten der Biochemie, Mikrobiologie und Umweltschutzanalyse

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Résumé Les recherches effectuées durant les dix dernières années par le personnel de l'Institut de Thermochimie ont eu pour résultat la mise au point d'appareils nouveaux qui augmentent, considérablement l'applicabilité de la calorimétrie à l'étude des problèmes chimiques. Ainsi les problèmes associés aux composants d'un calorimètre (c'est-à-dire bain à température constante, burette à vitesse constante, récipient réactionnel, circuit détecteur de température et procédés d'analyse des données) ont été résolus. C'est pourquoi la technique du titrage en continu donne maintenant des résultats d'une exactitude comparable à celle obtenue avec les calorimètres en solutions conventionnels. Ces développements ont ouvert de nouvelles perspectives de recherche dans les domaines de la biochimie, de la microbiologie et des analyses liées à la protection de l'environnement.

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微流控技术研究的若干进展

微流控芯片(又称芯片实验室)是一种以在微米尺度空间对流体进行操控为主要特征的科学技术。它具有将化学和生物实验室的基本功能微缩到一个几平方厘米芯片上的能力,已经显示了重要的应用前景。作为     

Recent progress in SERS biosensing

This perspective gives an overview of recent developments in surface-enhanced Raman scattering (SERS) for biosensing. We focus this review on SERS papers published in the last 10 years and to specific applications of detecting biological analytes. Both intrinsic and extrinsic SERS biosensing schemes have been employed to detect and identify small molecules, nucleic acids, lipids, peptides, and proteins, as well as for in vivo and cellular sensing. Current SERS substrate technologies along with a series of advancements in surface chemistry, sample preparation, intrinsic/extrinsic signal transduction schemes, and tip-enhanced Raman spectroscopy are discussed. The progress covered herein shows great promise for widespread adoption of SERS biosensing.