Preparation of compressible polymer monoliths that contain mesopores capable of rapid oil–water separation

Abstract

A bottom-up design enables the preparation of a mesoporous, compressible, polymer monolith that shows rapid separation of oil–water mixture.

Recent Progress on Near-Infrared Photoacoustic Imaging: Imaging Modality and Organic Semiconducting Agents

“…Additionally, self-propagating reactions, such as self-assembly or triggered head-to-tail depolymerization [114,115,116,117,118], can readily turn on–off or even amplify the PA signal. Furthermore, addition of the PA properties to various network materials, such as porous materials or hydrogels [119,120,121,122,123,124,125,126], can provide a non-destructible in situ monitoring system or facile, selective manipulation of physical properties of the networks in response to NIR.…”

Recent Progress on Molecular Photoacoustic Imaging with Carbon-Based Nanocomposites

“…Calcination then produces mesoporous carbon nanospheres (Meso-CNs) that are able to absorb a wide spectrum of light (i.e., 300–1400 nm) that induces more efficient PA imaging and photothermal conversion in comparison with SWCNT or gold nanorods. Furthermore, mesopores can substantially enhance the properties of composite materials [ 98 ]. Their size, volume, and high specific surface area allow them to be loaded with DOX for chemotherapy at a high capacity (35 wt.%) and to produce a triggered release of the drug molecules in response to pH or NIR light.…”

Microporous Organic Polymers: A Synthetic Platform for Engineering Heterogeneous Carbocatalysts

“…Among the many microporous organic polymers, the phenylacetylene-based networks used in this study have been widely explored because they can be easily synthesized as a monolith in various shapes such as spongy bulk materials, films, or coating layers, in contrast to normal powdery microporous polymers that suffer from a lack of processability. Thus, they have demonstrated feasibility in, for instance, flow-through catalysis, selective separation of organic pollutants, and stimuliresponsive systems, [22][23][24][25] which prompts us to further develop their capability of elemental engineering for carbonaceous materials as a synthesis platform. Figure 1 shows the process flow for synthesis of the polymer networks via SonogashiraÀ Hagihara coupling polymerization using a 1,3,5-triethynylbenzene core and diiodo linkers.…”

“…In this study, we demonstrate the capability of microporous networks in the design of carbocatalysts by exploiting their carbon‐rich nature and flexible synthesis. In particular, the materials based on arylacetylene derivatives can be obtained as monolith products that are microporous and compressible; thus they have addressed practical applications [20–25] . Herein, we were able to explore the networks as functional carbon precursors for heteroatom engineering due to following reasons: (i) the porous networks have a high specific surface area and thermal stability, and (ii) allow direct carbonization with a high yield; (iii) also, the chosen monomeric units containing heteroatoms such as nitrogen and sulfur enable inherent elemental doping without extra substrates or tedious procedures upon heating.…”

“…In particular, the materials based on arylacetylene derivatives can be obtained as monolith products that are microporous and compressible; thus they have addressed practical applications. [20][21][22][23][24][25] Herein, we were able to explore the networks as functional carbon precursors for heteroatom engineering due to following reasons: (i) the porous networks have a high specific surface area and thermal stability, and (ii) allow direct carbonization with a high yield; (iii) also, the chosen monomeric units containing heteroatoms such as nitrogen and sulfur enable inherent elemental doping without extra substrates or tedious procedures upon heating. Therefore, functional carbonaceous materials can have intrinsic porosity in the nanostructured carbon matrices and show designed behavior emanated from the embedded active sites.…”