共查询到20条相似文献,搜索用时 0 毫秒
1.
M. Endo 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(9):1497-1501
Recent advances in chemical oxygen-iodine lasers (COIL) are reviewed. In this paper, developments of the COIL as a unique
chemical device, whose product is not a chemical substance but coherent photons is emphasized. The key component of a COIL
is the singlet oxygen generator (SOG). The unique principles of modern SOGs are reviewed. For high-efficiency operation, rapid
mixing of oxygen and iodine is of primarly importance. The latest mixing enhancement techniques are reviewed. Applications
of ultrahigh-power COILs are presented.
The text was submitted by the author in English. 相似文献
2.
3.
Recent advances in chemical ecology 总被引:2,自引:0,他引:2
J B Harborne 《Natural product reports》1989,6(1):85-109
4.
Recent advances in chemical ecology. 总被引:1,自引:0,他引:1
J B Harborne 《Natural product reports》1999,16(4):509-523
5.
《International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry》1989,33(6):603-610
The characteristic properties of TBP and the advantage of using TBP as an energy donor or an acceptor have been described. TBP can be used as a probe for detecting the excited states of alkanes, more reliable G values of alkanes have been obtained. The rate constants of the energy transfer for TBP-alkanes binary systems have been determined. The energy transfer process is controlled by diffusive motion of the reactive species. TBP also can be used as a probe for detecting the geminate ion pairs of alkanes. 相似文献
6.
Enaminones, which possesses both the nucleophilic enamine as well as electrophilic enone structures,are well known versatile building blocks in organic synthesis. Meanwhile, visible light-mediated reactions have emerged as useful synthetic strategy with enhanced sustainability. Around the last decade,various photochemical transformations of enaminones have been developed to construct cyclic or acyclic compounds. In this review, we describe the recent advances in visible light-mediated chemical t... 相似文献
7.
Edward Loukopoulos 《Journal of Coordination Chemistry》2018,71(3):371-410
This review aims to provide reports of one dimensional (1-D) coordination polymers that have been used as catalysts in various organic reactions in the last decade, covering the literature from 2007 and onwards. The CPs have been mainly categorized into homometallic and heterometallic compounds; additional parameters such as the metal and ligand selection for the CP are discussed to provide a more detailed look into each system. 相似文献
8.
9.
10.
Inertial microfluidics has attracted significant attentions in last decade due to its superior advantages of high throughput, label- and external field-free operation, simplicity, and low cost. A wide variety of channel geometry designs were demonstrated for focusing, concentrating, isolating, or separating of various bioparticles such as blood components, circulating tumor cells, bacteria, and microalgae. In this review, we first briefly introduce the physics of inertial migration and Dean flow for allowing the readers with diverse backgrounds to have a better understanding of the fundamental mechanisms of inertial microfluidics. Then, we present a comprehensive review of the recent advances and applications of inertial microfluidic devices according to different channel geometries ranging from straight channels, curved channels to contraction-expansion-array channels. Finally, the challenges and future perspective of inertial microfluidics are discussed. Owing to its superior benefit for particle manipulation, the inertial microfluidics will play a more important role in biology and medicine applications. 相似文献
11.
Although laser desorption mass spectrometry was introduced in the 1960s, the potential of laser mass spectrometry was not
realised until the introduction of matrix-assisted laser desorption/ionisation (MALDI) in the 1980s. The technique relies
on light-absorbing compounds called matrices that are co-crystallised with the analyte to achieve high ionisation and desorption
efficiencies. MALDI offers a lot of advantages and is an indispensable tool in macromolecule analysis. However, the presence
of the matrix also produces a high chemical background in the region below m/z 700 in the mass spectrum. Surface-assisted laser desorption/ionisation (SALDI) substitutes the chemical matrix of MALDI for
an active surface, which means that matrix interference can be eliminated. SALDI mass spectrometry has evolved in recent years
into a technique with great potential to provide insight into many of the challenges faced in modern research, including the
growing interest in “omics” and the demands of pharmaceutical science. A great variety of materials have been reported to
work in SALDI. Examples include a number of nanomaterials and surfaces. The unique properties of nanomaterials greatly facilitate
analyte desorption and ionisation. This article reviews recent advances made in relation to carbon- and semiconductor-based
SALDI strategies. Examples of their environmental, chemical and biomedical applications are discussed with the aim of highlighting
progression in the field and the robustness of the technique, as well as to evaluate the strengths and weaknesses of individual
approaches. In addition, this article describes the physical and chemical processes involved in SALDI and explains how the
unique physical and electronic properties of nanostructured surfaces allow them to substitute for the matrix in energy transfer
processes. 相似文献
12.
Natural products have been extensively used to treat diseases throughout human history. These are mainly because natural products normally target biological macromolecules selectively. Target identification could help us to develop new therapeutic agents and discover new biological pathways underlying human diseases. Herein, we highlight some recent examples of using natural products and their derivatives as chemical probes to identify the molecular targets and elucidate mode of action. 相似文献
13.
《中国化学快报》2023,34(5):107782
Carbon dioxide (CO2) is an attractive C1 building block in chemical synthesis due to its abundance, availability and sustainability. However, the low reactivity and high stability generally limits its transformations under mild conditions to value added chemicals. Recent advances in flow chemistry provide effective means for the chemical transformation of CO2, and many new methods and techniques that fully utilized the advantages of continuous flow platforms for the chemical fixation of CO2 have been realized. In view of the rapid development and the urgent need for continuous transformation of CO2, herein we wish to present an update of the recent advances in this research area. 相似文献
14.
15.
Qi Yun-Kun Si Yan-Yan Du Shan-Shan Liang Jun Wang Ke-Wei Zheng Ji-Shen 《中国科学:化学(英文版)》2019,62(3):299-312
Ubiquitination, a key and extensive posttranslational modification of proteins, has profound effects on a variety of physiological and pathological processes. The inherent complexity of ubiquitin conjugates makes it highly challenging to study the functional and structural mechanisms of ubiquitination. To address these challenges, accesses to sufficient poly-ubiquitin chains or ubiquitinated proteins are urgently needed. Over the last decade, synthetic protein chemists have developed several novel peptide ligation methods for the preparation of ubiquitin conjugates with precise control over the atomic structure. In this review, we summarize the recent breakthroughs and potential challenges in the chemical synthesis and semi-synthesis of ubiquitin conjugates with respect to the preparation of poly-ubiquitin-based proteins and ubiquitin-based probes. 相似文献
16.
N. V. Kovganko 《Chemistry of Natural Compounds》1997,33(5):506-526
This review generalizes information on methods of synthesizing ecdysteroids and substances structurally close to them published in the literature during the last decade.Institute of Bioorganic Chemistry, Belarus Academy of Sciences, 220141, Belarus', Minsk, ul. Zhodinskaya, 5/2. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 655–682, September–October, 1997. 相似文献
17.
18.
Liposomes have been extensively investigated as possible carriers for diagnostic or therapeutic agents due to their unique properties. However, liposomes still have not attained their full potential as drug and gene delivery vehicles because of their insufficient morphological stability. Recently, a super-stable and freestanding hybrid liposomal cerasome (partially ceramic- or silica-coated liposome) has drawn much attention as a novel drug delivery system because its atomic layer of polyorganosiloxane surface imparts higher morphological stability than conventional liposomes and its liposomal bilayer structure reduces the overall rigidity and density greatly compared to silica nanoparticles. Cerasomes are more biocompatible than silica nanoparticles due to the incorporation of the liposomal architecture into cerasomes. Cerasomes combine the advantages of both liposomes and silica nanoparticles but overcome their disadvantages so cerasomes are ideal drug delivery systems. The present review will first highlights some of the key advances of the past decade in the technology of cerasome production and then review current biomedical applications of cerasomes, with a view to stimulating further research in this area of study. 相似文献
19.
Daniel Betz Philipp Altmann Mirza Cokoja Wolfgang A. Herrmann Fritz E. Kühn 《Coordination chemistry reviews》2011,255(13-14):1518-1540
Ionic liquids are an interesting alternative to classical solvents presenting several advantages. A variety of catalysts show good or even enhanced activities when applied in ionic liquids. Oxidation catalysis represents a large segment of industrial chemistry, providing both bulk chemicals and intermediates for high value added special products and pharmaceuticals. Particularly for the latter products organometallic and inorganic catalysts are being developed that can be applied in systems consisting of or containing ionic liquids. This work provides an overview on recent developments in this field. 相似文献