超强酸催化联苯与1-丙基isatin多羟基烷基化反应的非化学计量效应

IF 1.6 4区化学 Q3 POLYMER SCIENCE

High Performance Polymers Pub Date : 2023-05-15 DOI:10.1177/09540083231174371

Alfredo Cruz-Rosado, Juan Enrique Romero‐Hernández, Marlene Ríos‐López, S. López-Morales, G. Cedillo, L. Ríos-Ruiz, Enoc Cetina-Mancilla, J. Palacios-alquisira, M. Zolotukhin, E. Vivaldo‐Lima

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引用次数: 0

摘要

介绍了在非化学计量条件下，超强酸催化联苯(A2单体)和1-丙基isatin (B2单体)多羟基烷基化反应的实验研究。采用凝胶渗透色谱、基质辅助激光解吸/电离飞行时间(MALDI-TOF)、核磁共振和扩散有序光谱(DOSY)对制备的高性能聚合物进行了表征。过量使用B2可获得高分子量(Mw > 150000 Da)和超高分子量(Mw ~ 900000 Da)，这与在非化学计量条件下观察到的其他超羧酸催化多羟基烷基化反应的行为一致，与过量使用A2的情况相反，如我们小组先前的研究报告所述，过量使用A2可获得分子量降低。从MALDI-TOF数据中观察到A、B和M型线性聚合物分子，以及c型循环。

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Non-stoichiometric effect in the superacid-catalyzed polyhydroxyalkylation of biphenyl and 1-propyl isatin

An experimental study on the superacid-catalyzed polyhydroxyalkylation of biphenyl (A2 monomer) and 1-propyl isatin (B2 monomer) at non-stoichiometric conditions is presented. The produced high-performance polymers were characterized by gel permeation chromatography matrix-assisted laser-desorption/ionization-time-of-flight (MALDI-TOF), nuclear magnetic resonance and diffusion-ordered spectroscopy (DOSY). High molecular weights (Mw > 150,000 Da) and ultra-high molecular weights (Mw ∼ 900,000 Da) are obtained when B2 is used in excess, which agrees with the behavior observed at non-stoichiometric conditions for other superacid catalyzed polyhydroxyalkylations, contrary to the case when A2 is used in excess, where a reduction in molecular weight is obtained, as reported in a previous study from our group. A, B, and M types of linear polymer molecules, as well as C-type cycles, were observed from the MALDI-TOF data.

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来源期刊

High Performance Polymers 化学-高分子科学

CiteScore

4.20

自引率

14.30%

发文量

106

审稿时长

1.2 months

期刊介绍： Health Services Management Research (HSMR) is an authoritative international peer-reviewed journal which publishes theoretically and empirically rigorous research on questions of enduring interest to health-care organizations and systems throughout the world. Examining the real issues confronting health services management, it provides an independent view and cutting edge evidence-based research to guide policy-making and management decision-making. HSMR aims to be a forum serving an international community of academics and researchers on the one hand and healthcare managers, executives, policymakers and clinicians and all health professionals on the other. HSMR wants to make a substantial contribution to both research and managerial practice, with particular emphasis placed on publishing studies which offer actionable findings and on promoting knowledge mobilisation toward theoretical advances. All papers are expected to be of interest and relevance to an international audience. HSMR aims at enhance communication between academics and practitioners concerned with developing, implementing, and analysing health management issues, reforms and innovations primarily in European health systems and in all countries with developed health systems. Papers can report research undertaken in a single country, but they need to locate and explain their findings in an international context, and in international literature.