Chi Jay J, Johnstone Timothy C, Voicu Dan, Mehlmann Paul, Dielmann Fabian, Kumacheva Eugenia, Stephan Douglas W
Department of Chemistry , University of Toronto , 80 St. George St. , Toronto , Ontario M5S 3H6 , Canada . Email:
Institut für Anorganische und Analytische Chemie , Westfälische Wilhelms-Universität Münster , Corrensstrasse 30 , 48149 Münster , Germany.
Chem Sci. 2017 Apr 1;8(4):3270-3275. doi: 10.1039/c6sc05607e. Epub 2017 Feb 20.
A microfluidic strategy has been used for the time- and labour-efficient evaluation of the relative efficiency and thermodynamic parameters of CO binding by three Lewis acid/base combinations, where efficiency is based on the amount of CO taken up per binding unit in solution. Neither BuP nor B(CF) were independently effective at CO capture, and the combination of the imidazolin-2-ylidenamino-substituted phosphine (NIPr)P and B(CF) was equally ineffective. Nonetheless, an archetypal frustrated Lewis pair (FLP) comprised of BuP and B(CF) was shown to bind CO more efficiently than either the FLP derived from tetramethylpiperidine (TMP) and B(CF) or the highly basic phosphine (NIPr)P. Moreover, the proposed microfluidic platform was used to elucidate the thermodynamic parameters for these reactions.
一种微流控策略已被用于对三种路易斯酸/碱组合结合CO的相对效率和热力学参数进行省时省力的评估，其中效率是基于溶液中每个结合单元吸收的CO量。BuP和B(CF)单独在CO捕获方面均无效，并且咪唑啉-2-亚基氨基取代的膦（NIPr）P与B(CF)的组合同样无效。尽管如此，由BuP和B(CF)组成的典型受阻路易斯对（FLP）被证明比源自四甲基哌啶（TMP）和B(CF)的FLP或高碱性膦（NIPr）P更有效地结合CO。此外，所提出的微流控平台被用于阐明这些反应的热力学参数。
