Design and synthesis of a multifunctional porous N-rich polymer containing s-triazine and Tröger's base for CO2 adsorption, catalysis and sensing

Author(s): Yuanzheng Cui ¹ ^, ² ^, ³ ^, ⁴ , Jianfeng Du ¹ ^, ² ^, ³ ^, ⁴ , Yuchuan Liu ¹ ^, ² ^, ³ ^, ⁴ , Yue Yu ¹ ^, ² ^, ³ ^, ⁴ , Shun Wang ¹ ^, ² ^, ³ ^, ⁴ , Hao Pang ¹ ^, ² ^, ³ ^, ⁴ , Zhiqiang Liang ¹ ^, ² ^, ³ ^, ⁴ , Jihong Yu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵

Publication date (Electronic): 2018

Journal: Polymer Chemistry

Publisher: Royal Society of Chemistry (RSC)

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Abstract

A multifunctional porous N-rich polymer containing s-triazine and Tröger's base was synthesized. It shows selective adsorption for CO ₂, colorimetric performance for HCl and good catalytic activity in the Knoevenagel condensation.

Abstract

Porous organic polymers have shown potential applications in gas adsorption/separation, sensing, light-harvesting, catalysis and photovoltaic or electronic devices. In this work, a N-rich porous organic polymer containing s-triazine and Tröger's base has been synthesized through a simple reaction of 2,4,6-tris(4-aminophenyl)- s-triazine (TAPT) and dimethoxymethane. The N ₂ adsorption of the polymer at 77 K reveals a type I isotherm of microporous materials, and the polymer exhibits a surface area of 473.1 m ² g ⁻¹ and CO ₂ uptake of 49.8 cm ³ g ⁻¹ at 1 bar and 273 K. Due to the presence of abundant N binding sites, it shows high isosteric heat for CO ₂ up to 33.7 kJ mol ⁻¹ and good CO ₂ adsorption selectivity over N ₂ and CH ₄ at 273 K. In addition, the polymer exhibits colorimetric performance for the naked-eye detection of HCl gas, and it has a good stability to recovery. Furthermore, the material can also be used as a heterogeneous basic catalyst of the Knoevenagel condensation reaction between aromatic aldehyde and malononitrile in excellent yields. This general synthetic method may lead to the development of a new class of N-rich porous organic polymers with multifunctions.

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Conjugated microporous polymers: design, synthesis and application.

Yanhong Xu, Shangbin Jin, Hong Xu … (2013)

Conjugated microporous polymers (CMPs) are a class of organic porous polymers that combine π-conjugated skeletons with permanent nanopores, in sharp contrast to other porous materials that are not π-conjugated and with conventional conjugated polymers that are nonporous. As an emerging material platform, CMPs offer a high flexibility for the molecular design of conjugated skeletons and nanopores. Various chemical reactions, building blocks and synthetic methods have been developed and a broad variety of CMPs with different structures and specific properties have been synthesized, driving the rapid growth of the field. CMPs are unique in that they allow the complementary utilization of π-conjugated skeletons and nanopores for functional exploration; they have shown great potential for challenging energy and environmental issues, as exemplified by their excellent performance in gas adsorption, heterogeneous catalysis, light emitting, light harvesting and electrical energy storage. This review describes the molecular design principles of CMPs, advancements in synthetic and structural studies and the frontiers of functional exploration and potential applications.