Efforts and challenges when synthesizing, characterizing testing conjugated porous polymers (CPPs) in fields related to energy storage, conversion production are reviewed from the author's perspective. The current state-of-the-art of such materials synthesis morphological control applications that encompass gas catalysis hydrogen is reviewed. Contrary classical π-conjugated polymers, special emphasis given aspects CPPs surface area, porosity pore volume implications those properties...

Exciton binding energy has been regarded as a crucial parameter for mediating charge separation in polymeric photocatalysts. Minimizing the exciton of polymers can increase yield charge-carrier generation and thus improve photocatalytic activities, but realization this approach remains great challenge. Herein, series linear donor-acceptor conjugated developed to minimize by modulating charge-transfer pathway. The results reveal that reduced loss state facilitate electron transfer from donor...

Abstract The search for metal‐free organic photocatalysts H 2 production from water using visible light remains a key challenge. Reported herein is molecular structural design of pure photocatalysts, derived conjugated polybenzothiadiazoles, photocatalytic evolution light. By alternating the substitution position electron‐withdrawing benzothiadizole unit on phenyl as comonomer, various polymers with either one‐ or three‐dimensional structures were synthesized and effect structure their...

Conjugated microporous polymers (CMPs) with controlled specific surface area have been prepared through Sonogashira–Hagihara cross-coupling reactions in the presence of silica nanoparticles as templating agents. The CMPs act heterogeneous photosensitizers for producing singlet oxygen a continuous flow synthesis (see picture).

The formation of aldehydes and ketones via selective oxidation alcohols is an essential transformation in organic synthesis. However, the usually harsh reaction conditions using toxic metal catalysts or corrosive reagents lead to undesired side products wastes. Environmentally friendly mild metal-free remain a huge challenge. Herein, we report use thiophene-based covalent triazine framework (CTF) as pure visible-light-active photocatalyst for at room temperature. Molecular oxygen was...

A simple structural design principle and band position alignment of conjugated microporous polymers for enhanced photocatalytic efficiency is presented. The valence conduction positions the polymer networks can be fine-tuned by altering substitution on centered phenyl unit to match required redox potential catalytic reactions under visible light.

Abstract Electron transfer is the rate‐limiting step in photocatalytic water splitting. Viologen and its derivatives are able to act as electron‐transfer mediators (ETMs) facilitate rapid electron from photosensitizers active sites. Nevertheless, ability often suffers formation of a stable dipole structure through coupling between cationic‐radical‐containing viologen‐derived ETMs, by which process becomes restricted. Herein, cyclic diquats, kind ETM, integrated into 2,2′‐bipyridine‐based...

Abstract Complex multiple‐component semiconductor photocatalysts can be constructed that display enhanced catalytic efficiency via multiple charge and energy transfer, mimicking photosystems in nature. In contrast, the of single‐component is usually limited due to fast recombination photogenerated excitons. Here, we report design an asymmetric covalent triazine framework as efficient organic photocatalyst. Four different molecular donor–acceptor domains are obtained within network, leading...

Covalent triazine frameworks (CTFs) have attracted a great deal of attention as an attractive new class visible light-active, metal-free, and polymer-based heterogeneous photocatalysts. CTFs demonstrated promising characteristics such synthetic diversity, stability, nontoxicity, pure organic nature, enhanced ordered structure. In this review, we aim to summarize the recent developments in ranging from novel preparation methods critical factors that directly impact their photocatalytic...

A review on the recent developments in controlling structural, photophysical and electronic properties of conjugated porous polymer (CPP) photocatalysts is presented.

Abstract The construction of multi‐heteroatom‐doped metal‐free carbon with a reversibly oxygen‐involving electrocatalytic performance is highly desirable for rechargeable metal‐air batteries. However, the conventional approach doping heteroatoms into matrix remains huge challenge owing to multistep postdoping procedures. Here, self‐templated carbonization strategy prepare nitrogen, phosphorus, and fluorine tri‐doped nanosphere (NPF‐CNS) developed, during which heteroatom‐enriched covalent...

Using photocatalytic oxidation to convert basic chemicals into high value compounds in environmentally benign reaction media is a current focus catalytic research. The challenge lies gaining controllability over product formation selectivity. We design covalent triazine frameworks as heterogeneous, metal-free, and recyclable photocatalysts for visible-light-driven switchable selective of styrene pure water. Selectivity was achieved by activation or deactivation the specific photogenerated...

Difluoromethylation reactions are increasingly important for the creation of fluorine-containing heterocycles, which core groups in a diverse range biologically and pharmacologically active ingredients. Ideally, this typically challenging reaction could be performed photocatalytically under mild conditions. To achieve separation redox processes would required efficient generation difluoromethyl radicals reduction oxygen. A covalent organic framework photocatalytic material was, therefore,...

Investigations into the selective oxidation of inert sp

Conjugated microporous polymer nanoparticles as highly dispersible heterogeneous organic photocatalysts for photocatalytic applications.

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTPhotocatalytic Suzuki Coupling Reaction Using Conjugated Microporous Polymer with Immobilized Palladium Nanoparticles under Visible LightZi Jun Wang, Saman Ghasimi, Katharina Landfester, and Kai A. I. Zhang*View Author Information Max Planck Institute for Research, D-55128 Mainz, Germany*E-mail: [email protected]Cite this: Chem. Mater. 2015, 27, 6, 1921–1924Publication Date (Web):March 2, 2015Publication History Received28 January...

Pure organic, heterogeneous, metal-free, and visible light-active photocatalysts offer a more sustainable environmentally friendly alternative to traditional metal-based catalysts. Here we report series of microporous organic polymers containing photoactive conjugated semiconductor units as heterogeneous for visible-light-promoted, highly selective bromination reaction electron-rich aromatic compounds using HBr bromine source molecular oxygen clean oxidant. Via simple Friedel–Crafts...

Research activities in the field of diketopyrrolopyrrole (DPP)-based polymers are reviewed. Synthetic pathways to monomers and polymers, characteristic properties described. Potential applications organic electronic materials such as light emitting diodes, solar cells effect transistors discussed.

Visible-light-driven chemical transformations via photocatalysis have witnessed an explosive growth in the past decade, accompanying enormous development of photocatalyst design. Among intensely investigated systems, molecular photocatalysts as transition-metal complexes and conjugated organic dyes been established efficient homogeneous photocatalytic systems for photoredox reactions. Nonetheless, heterogeneous possess considerable advantages such being highly stable, easily separable,...

High surface area porous conjugated polymers were synthesized via the high internal phase emulsion polymerization technique and micropore engineering as efficient heterogeneous photocatalysts for highly selective oxidation of organic sulfides to sulfoxides under visible light.

Herein, we report a novel trifluoromethanesulfonic acid vapor-assisted solid phase synthetic method to construct nanoporous covalent triazine frameworks with highly ordered hollow interconnected pores under mild reaction conditions.

The reduction of CO2 with visible light is a highly sustainable method for producing valuable chemicals. function-led design organic conjugated semiconductors more chemical variety than that inorganic has emerged as achieving carbon photofixation chemistry. Here, we report the molecular engineering triazine-based microporous polymers to capture, activate and reduce CO light. optical band gap CMPs engineered by varying electron-withdrawing (benzothiadiazole) electron-donating units...

Water-dispersible alkyne-bearing conjugated microporous poly-benzothiadiazoles were synthesized using thiol-yne chemistry to enhance water compatibility. The compatible polymer networks used as heterogeneous photocatalysts generate singlet oxygen for the conversion of furoic acid 5-hydroxy-2(5H)-furanone.

Abstract Large-scale photochemical synthesis of high value chemicals under mild conditions is an ideal method green chemical production. However, a scalable photocatalytic process has been barely reported due to the costly preparation, low stability photosensitizers and critical reaction required for classical photocatalysts. Here, we report merging flow chemistry with heterogeneous photoredox catalysis facile production compounds in continuous reactor visible light at room temperature air....