scholarly journals Conversion of amorphous polymer networks to covalent organic frameworks under ionothermal conditions: a facile synthesis route for covalent triazine frameworks

2015 ◽  
Vol 3 (48) ◽  
pp. 24422-24427 ◽  
Author(s):  
Sophie Kuecken ◽  
Johannes Schmidt ◽  
Linjie Zhi ◽  
Arne Thomas
Keyword(s):  
Amorphous Polymer ◽  
Polymer Networks ◽  
Porous Polymer ◽  
Covalent Organic Frameworks ◽  
Facile Synthesis ◽  
Synthesis Route

Covalent triazine frameworks (CTFs) are prepared from amorphous, non-porous polymer networks using a facile and scalable procedure.

Facile synthesis of porous organic polymers bifunctionalized with azo and porphyrin groups

RSC Advances ◽  
2015 ◽  
Vol 5 (119) ◽  
pp. 98508-98513 ◽  
Author(s):  
Xiaowei Jiang ◽  
Yunfei Liu ◽  
Jun Liu ◽  
Yali Luo ◽  
Yinong Lyu
Keyword(s):  
Polymer Networks ◽  
Direct Coupling ◽  
Porous Polymer ◽  
Organic Polymers ◽  
Facile Synthesis ◽  
Porous Organic Polymers ◽  
Aryl Amine ◽  
Catalyst Free ◽  
Surface Areas

Azo and porphyrin bifunctionalized porous polymer networks (azo-PPors) with BET surface areas up to 750 m2 g−1 were synthesized via a catalyst-free direct coupling of tetra(4-nitrophenyl)porphyrin and aryl amine monomers.

Facile synthesis of melamine-based porous polymer networks and their application for removal of aqueous mercury ions

Polymer ◽  
2010 ◽  
Vol 51 (26) ◽  
pp. 6193-6202 ◽  
Author(s):  
Guangwen Yang ◽  
Heyou Han ◽  
Chunyan Du ◽  
Zhihui Luo ◽  
Yanjun Wang
Keyword(s):  
Polymer Networks ◽  
Porous Polymer ◽  
Mercury Ions ◽  
Facile Synthesis ◽  
Aqueous Mercury

Insight into the crystallization of amorphous imine-linked polymer networks to 2D covalent organic frameworks

2016 ◽  
Vol 52 (18) ◽  
pp. 3690-3693 ◽  
Author(s):  
Brian J. Smith ◽  
Anna C. Overholts ◽  
Nicky Hwang ◽  
William R. Dichtel
Keyword(s):  
Growth Mechanism ◽  
Amorphous Polymer ◽  
Polymer Networks ◽  
Covalent Organic Frameworks ◽  
Rapid Formation ◽  
Insight Into

The growth mechanism of 2D imine-linked COF involves the rapid formation of an amorphous polymer, which subsequently crystallizes.

Design and Synthesis of Two-Dimensional Covalent Organic Frameworks with Four-Arm Cores: Prediction of Remarkable Ambipolar Charge-Transport Properties

2019 ◽  
Author(s):  
Simil Thomas ◽  
Hong Li ◽  
Raghunath R. Dasari ◽  
Austin Evans ◽  
William Dichtel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Density Functional ◽  
Polymer Networks ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
X Ray Diffraction ◽  
Zinc Porphyrin ◽  
Design And Synthesis ◽  
Predicted Values

<p>We have considered three two-dimensional (2D) π-conjugated polymer networks (i.e., covalent organic frameworks, COFs) materials based on pyrene, porphyrin, and zinc-porphyrin cores connected <i>via</i> diacetylenic linkers. Their electronic structures, investigated at the density functional theory global-hybrid level, are indicative of valence and conduction bands that have large widths, ranging between 1 and 2 eV. Using a molecular approach to derive the electronic couplings between adjacent core units and the electron-vibration couplings, the three π-conjugated 2D COFs are predicted to have ambipolar charge-transport characteristics with electron and hole mobilities in the range of 65-95 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>. Such predicted values rank these 2D COFs among the highest-mobility organic semiconductors. In addition, we have synthesized the zinc-porphyrin based 2D COF and carried out structural characterization via powder X-ray diffraction and surface area analysis, which demonstrates the feasability of these electroactive networks.</p>

Facile synthesis of Ti4+-immobilized magnetic covalent organic frameworks for enhanced phosphopeptide enrichment

Talanta ◽  
2021 ◽  
pp. 122789
Author(s):  
Yanting He ◽  
Shasha Zhang ◽  
Chao Zhong ◽  
Yixin Yang ◽  
Guorong Li ◽  
...  
Keyword(s):  
Covalent Organic Frameworks ◽  
Phosphopeptide Enrichment ◽  
Facile Synthesis

Cost-effective synthesis and solution processing of porous polymer networks through methanesulfonic acid-mediated aldol triple condensation

2018 ◽  
Vol 2 (2) ◽  
pp. 396-401 ◽  
Author(s):  
Zi-Hao Guo ◽  
Chenxu Wang ◽  
Qiang Zhang ◽  
Sai Che ◽  
Hong-Cai Zhou ◽  
...  
Keyword(s):  
Polymer Networks ◽  
Methanesulfonic Acid ◽  
Cost Effective ◽  
Porous Polymer ◽  
Solution Processing ◽  
Condensation Method ◽  
Highly Efficient ◽  
Effective Synthesis ◽  
Scalable Synthesis

A highly efficient aldol triple condensation method was developed for scalable synthesis and solution processing of conjugated porous polymer networks.

Facile Synthesis of Hemiacetal Ester-based Dynamic Covalent Polymer Networks Combining Fast Reprocessability and High Performance

2021 ◽  
Author(s):  
Hongzhi Feng ◽  
Songqi Ma ◽  
Xiwei Xu ◽  
Qiong Li ◽  
Binbo Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Polymer Networks ◽  
Facile Synthesis

Dynamic covalent polymer networks (DCPNs) can address the recycle or reuse issue of thermosets due to their network rearrangement from the dynamic bond exchange. However, developing DCPNs combining fast reprocessability...

scholarly journals The development of a high-throughput gradient array apparatus for the study of porous polymer networks.

2010 ◽  
Author(s):  
Partha Majumdar ◽  
Elizabeth Lee ◽  
Bret J. Chisholm ◽  
Shawn M. Dirk ◽  
Michael Weisz ◽  
...  
Keyword(s):  
High Throughput ◽  
Polymer Networks ◽  
Porous Polymer
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