Azine-based polymers with a two-electron redox process as cathode materials for organic batteries
作者:Pascal Acker、Martin E. Speer、Jan S. Wössner、Birgit Esser
DOI:10.1039/d0ta04083e
日期:——
energy-efficient production and recycling. Organic p-type compounds that undergo two reversible oxidations are relatively rare, but can provide a higher specific capacity compared to molecules undergoing one-electron processes. We herein present azine (N–N-linked diimine)-based polymers featuring two reversible oxidations at attractive potentials of 2.9 and 3.3 V vs. Li/Li+. A cross-linked and end-capped azine-based
由于其具有更高的可持续性,低毒性以及高能效的生产和回收利用,因此用于电池的有机基正极材料的兴趣日益浓厚。经历两次可逆氧化的有机p型化合物相对较少,但与经历单电子过程的分子相比,可以提供更高的比容量。我们在此介绍基于嗪(N-N键联的二亚胺)的聚合物,其特征是在与Li / Li +相比具有2.9和3.3 V的吸引电势下具有两个可逆氧化。交联且封端的基于嗪的聚合物在基于锂的半电池中提供了良好的循环稳定性,并且可用比容量为133 mA hg -1与高达100C速率的高速率性能配对。我们的研究介绍了作为有吸引力的阴极活性电池材料的杂志。
Amidine Dications as Superelectrophiles
作者:Michael J. Corr、Mark D. Roydhouse、Kirsty F. Gibson、Sheng-ze Zhou、Alan R. Kennedy、John A. Murphy
DOI:10.1021/ja908191k
日期:2009.12.16
2-Dimethylalkylammonium pyridinium and 2-dimethylalkylammonium pyrimidinium ditriflate salts are very powerful methylating agents toward phosphorus (triphenylphosphine) and nitrogen (triethylamine) nucleophiles. In competition experiments with triethylamine as nucleophile, these N-methyl disalts are more reactive methylating agents than dimethyl sulfate. Reaction of the pyridinium dications with water as an oxygen nucleophile
作者:Wanjin Zhong、Chuan Wan、Ziyuan Zhou、Chuan Dai、Yichi Zhang、Fei Lu、Feng Yin、Zigang Li
DOI:10.1021/acs.orglett.3c03539
日期:2023.12.8
Through systematic optimization of halopyridinium compounds, we established a peptide coupling protocol utilizing 4-iodine N-methylpyridinium (4IMP) for solid-phase peptidesynthesis (SPPS). The 4IMP coupling reagent is easily prepared, bench stable, and cost-effective. Employing 4IMP in the SPPS process has showcased remarkable chemoselectivity and efficiency, effectively eliminating racemization
CONJUGATES COMPRISING HYDROXYALKYL STARCH AND A CYTOTOXIC AGENT AND PROCESS FOR THEIR PREPARATION
申请人:Fresenius Kabi Deutschland GmbH
公开号:EP2591008A1
公开(公告)日:2013-05-15
[EN] CONJUGATES COMPRISING HYDROXYALKYL STARCH AND A CYTOTOXIC AGENT AND PROCESS FOR THEIR PREPARATION<br/>[FR] CONJUGUÉS COMPRENANT UN AMIDON HYDROXYALKYLÉ ET UN AGENT CYTOTOXIQUE ET LEUR PROCÉDÉ DE PRÉPARATION
申请人:FRESENIUS KABI DE GMBH
公开号:WO2012004008A1
公开(公告)日:2012-01-12
The present invention relates to hydroxyalkyl starch conjugates, a method for preparing the same, the hydroxyalkyi starch conjugate comprising a hydroxyalkyi starch derivative and a cytotoxic agent and the cytotoxic agent comprising at least one tertiary hydroxyl group, wherein the hydroxyalkyi starch is linked via said tertiary hydroxyl group to the cytotoxic agent. The conjugates according to the present invention have a structure according to the following formula HAS'(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS' is the residue of the hydroxyalkyi starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyi starch derivative has a mean molecular weight (MW) above the renal threshold.