Issue 23, 2019

A phenanthroline-based porous organic polymer for the iridium-catalyzed hydrogenation of carbon dioxide to formate

Abstract

The phenanthroline unit represents one of the most significant ligand frameworks in coordination chemistry. Constructing phenanthroline-based porous organic polymers with nonreactive functional groups in the polymer skeleton is a very challenging goal in the field of heterogeneous catalysis, because it would offer a novel platform for doping molecular catalytic modules and generating single-site, stable, and porous heterogeneous catalytic entities for a wide range of catalytic applications. In this regard, a unique strategy to construct phenanthroline-based porous organic polymer (phen-POP) without other reactive/coordinating functional groups in the polymer skeleton has been designed for the first time, and synthesized via a solvent knitting Friedel–Crafts polymerization method with a high BET surface area of 560 m2 g−1. The well-defined and isolated phen sites of the phen-POP can serve as a platform for immobilizing transition metal catalysts through N–N coordination bonds. The post-synthetic metalation of phen-POP with iridium(III) chloride afforded the most active (initial turnover frequency of 40 000 h−1), simple and selective heterogeneous Ir catalyst for the hydrogenation of CO2 to formate. Thus, the work is significant in constructing novel POP-based heterogeneous catalysts for the development of industrially viable hydrogenation catalysts.

Graphical abstract: A phenanthroline-based porous organic polymer for the iridium-catalyzed hydrogenation of carbon dioxide to formate

Supplementary files

Article information

Article type
Paper
Submitted
10 Apr. 2019
Accepted
09 Maijs 2019
First published
14 Maijs 2019

J. Mater. Chem. A, 2019,7, 14019-14026

A phenanthroline-based porous organic polymer for the iridium-catalyzed hydrogenation of carbon dioxide to formate

G. H. Gunasekar and S. Yoon, J. Mater. Chem. A, 2019, 7, 14019 DOI: 10.1039/C9TA03807H

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