scholarly journals Polymeric Carbon Nitride Armored Centimeter-Wide Organic Droplets in Water for All-Liquid Heterophase Emission Technology

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1626 ◽  
Author(s):  
Qian Cao ◽  
Baris Kumru
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Organic Molecules ◽  
Polymer Materials ◽  
Conjugated Organic Molecules ◽  
Aqueous Polymer ◽  
Polymeric Semiconductor ◽  
Aqueous Polymer Solution ◽  
Pickering Stabilization ◽  
Polymeric Carbon

High potential of emission chemistry has been visualized in many fields, from sensors and imaging to displays. In general, conjugated polymers are the top rankers for such chemistry, despite the fact that they bring solubility problems, high expenses, toxicity and demanding synthesis. Metal-free polymeric semiconductor graphitic carbon nitride (g-CN) has been an attractive candidate for visible light-induced photocatalysis, and its emission properties have been optimized and explored recently. Herein, we present modified g-CN nanoparticles as organodispersible conjugated polymer materials to be utilized in a heterophase emission systems. The injection of a g-CN organic dispersion in aqueous polymer solution not only provides retention of the shape by Pickering stabilization of g-CN, but high intensity emission is also obtained. The heterophase all-liquid emission display can be further modified by the addition of simple conjugated organic molecules to the initial g-CN dispersion, which provides a platform for multicolor emission. We believe that such shape-tailored and stabilized liquid–liquid multicolor emission systems are intriguing for sensing, displays and photonics.

Dissolution and Performing Homogeneous Photocatalysis of Polymeric Carbon Nitride

2018 ◽  
Author(s):  
Chaofeng Huang ◽  
Jing Wen ◽  
Yanfei Shen ◽  
Fei He ◽  
Li Mi ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Methane Sulfonic Acid ◽  
Environment Friendly ◽  
The Poor ◽  
Catalytic Sites ◽  
Homogeneous Photocatalysis ◽  
Polymeric Carbon ◽  
First Time

<a></a><a>As a metal-free conjugated polymer, carbon nitride (CN) has attracted tremendous attention as heterogeneous (photo)catalysts. </a><a></a><a>By following prototype of enzymes, making all catalytic sites of accessible via homogeneous reactions is a promising approach toward maximizing CN activity, but hindered due to </a><a></a><a>the poor insolubility of CN</a>. Herein, we report the dissolution of CN in environment-friendly methane sulfonic acid and the homogeneous photocatalysis driven by CN for the first time with the activity boosted up to 10-times, comparing to the heterogeneous counterparts. Moreover, facile recycling and reusability, the <a>hallmark</a> of heterogeneous catalysts, were kept for the homogeneous CN photocatalyst via reversible precipitation using poor solvents. It opens new vista of CN in homogeneous catalysis and offers a successful example of polymeric catalysts in bridging gaps of homo/heterogeneous catalysis.

Electronic Properties Of The Model Organometallic Polymer [M-C=C(N)]n (M = Cu(I), Ag(I), Au(I))

1999 ◽  
Vol 576 ◽  
Author(s):  
Z. M. Su ◽  
R. S. Wang ◽  
C. M. Che
Keyword(s):  
Magnetic Properties ◽  
Transition Metal ◽  
Theoretical Analysis ◽  
Organic Molecules ◽  
Electronic Configuration ◽  
Organometallic Complexes ◽  
Polymer Materials ◽  
Organometallic Polymers ◽  
Organometallic Polymer ◽  
Conjugated Organic Molecules

ABSTRACTThe organometallic complexes of transition metal M = Cu(I), Ag(I), Au(I) with d10 electronic configuration have interesting optical, electronic and magnetic properties. It is possible to prepare the high functional organometallic polymer materials by coordinating π-conjugated organic molecules with d10 metals. According to the experimental structures, the model polymers [M-C-C(N)]n are built up and quantum chemistry methods are used to calculate their properties. It is indicated from theoretical analysis that the organometallic polymers would have comparable conductivity when interactions exist between metals and π electrons of different chains.

scholarly journals Dissolution and Performing Homogeneous Photocatalysis of Polymeric Carbon Nitride

2018 ◽  
Author(s):  
Chaofeng Huang ◽  
Jing Wen ◽  
Yanfei Shen ◽  
Fei He ◽  
Li Mi ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Methane Sulfonic Acid ◽  
Environment Friendly ◽  
The Poor ◽  
Catalytic Sites ◽  
Homogeneous Photocatalysis ◽  
Polymeric Carbon ◽  
First Time

<a></a><a>As a metal-free conjugated polymer, carbon nitride (CN) has attracted tremendous attention as heterogeneous (photo)catalysts. </a><a></a><a>By following prototype of enzymes, making all catalytic sites of accessible via homogeneous reactions is a promising approach toward maximizing CN activity, but hindered due to </a><a></a><a>the poor insolubility of CN</a>. Herein, we report the dissolution of CN in environment-friendly methane sulfonic acid and the homogeneous photocatalysis driven by CN for the first time with the activity boosted up to 10-times, comparing to the heterogeneous counterparts. Moreover, facile recycling and reusability, the <a>hallmark</a> of heterogeneous catalysts, were kept for the homogeneous CN photocatalyst via reversible precipitation using poor solvents. It opens new vista of CN in homogeneous catalysis and offers a successful example of polymeric catalysts in bridging gaps of homo/heterogeneous catalysis.

C-, N-Vacancy defect engineered polymeric carbon nitride towards photocatalysis: viewpoints and challenges

2021 ◽  
Vol 9 (1) ◽  
pp. 111-153
Author(s):  
Abhinandan Kumar ◽  
Pankaj Raizada ◽  
Ahmad Hosseini-Bandegharaei ◽  
Vijay Kumar Thakur ◽  
Van-Huy Nguyen ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Structural Features ◽  
Vacancy Defect ◽  
Semiconductor Material ◽  
Metal Free ◽  
Polymeric Semiconductor ◽  
Polymeric Carbon

As an alluring metal-free polymeric semiconductor material, graphite-like carbon nitride (g-C3N4; abbreviated as GCN) has triggered a new impetus in the field of photocatalysis, mainly favoured from its fascinating physicochemical and photoelectronic structural features.

Infrared Response in a Polymeric Carbon Nitride Via an Upconversion Mechanism

2019 ◽  
Author(s):  
Zhengyuan Jin ◽  
Xiantao Jiang ◽  
Qitao Zhang ◽  
Shaolong Huang ◽  
Luhong Zhang ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Upconversion Mechanism ◽  
Polymeric Carbon

Tuning of the Oxygen Species Linker on the Surface of Polymeric Carbon Nitride to Promote the Photocatalytic Hydrogen Evolution Performance

ChemSusChem ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3605-3613 ◽  
Author(s):  
Qin Lei ◽  
Rongzhi Chen ◽  
Yurong Zhao ◽  
Huanyu Chen ◽  
Xinxin Long ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Oxygen Species ◽  
Photocatalytic Hydrogen Evolution ◽  
Polymeric Carbon

Pillararene-Enriched Linear Conjugated Polymer Materials with Thiazolo[5,4-d]thiazole Linkages for Photocatalysis

2021 ◽  
Author(s):  
Zheng Li ◽  
Lu Li ◽  
Yan Wang ◽  
Ying-Wei Yang
Keyword(s):  
Band Structure ◽  
Conjugated Polymer ◽  
Polymer Materials

A heteroatom-doped conjugated polymer with tunable bandgaps is synthesized using pillararenes as electron-rich C2 symmetric nodes and thiazolo[5,4-d]thiazole as electron-deficient linkages. The influence of pillararenes in regulating band structure and...

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