scholarly journals Emissive Organogel Mediated Construction of Flexible Covalent Organic Polymer for the Separation of Aniline for Water Purification

2021 ◽  
Author(s):  
Apurba K. Das ◽  
Sayan Maiti ◽  
Tapas Ghosh ◽  
Arati Samal
Keyword(s):  
Binary Mixtures ◽  
Water Purification ◽  
Building Block ◽  
Amorphous Polymer ◽  
Condensation Reaction ◽  
Green Emission ◽  
Ambient Condition ◽  
Organic Polymer ◽  
Aggregation Induced Emission ◽  
Dimethyl Acetamide

A flexible covalent organic polymer (COP) has been successfully synthesized via dynamic covalent gel (DCG) formation through imine condensation reaction between 6-hydrazinonicotinic hydrazide hydrate and benzene-1,3,5-tricarboxaldehyde within 7 min under ambient condition. An emissive organogel mediated protocol has been developed for the construction of amorphous polymer (COP), selectively in N,N-dimethyl acetamide (DMA). Interestingly, two non-emissive building block units without large π-conjugated structures have been engaged for the construction of green emissive COP-gel. The green emission of COP-gel is generated by the intermolecular H-bonding assisted aggregation induced emission phenomenon. The dried COP efficiently adsorbs aniline molecules into its cavities and separate them from binary mixtures of aniline/nitrobenzene and aniline/water, respectively.

scholarly journals Emissive Organogel Mediated Construction of Flexible Covalent Organic Polymer for the Separation of Aniline for Water Purification

2022 ◽  
Author(s):  
Apurba K. Das ◽  
Sayan Maiti ◽  
Tapas Ghosh ◽  
Arati Samal
Keyword(s):  
Water Purification ◽  
Condensation Reaction ◽  
Organic Polymer

A flexible covalent organic polymer (COP) has been successfully synthesized via dynamic covalent gel (DCG) formation through imine condensation reaction between 6-hydrazinonicotinic hydrazide hydrate and benzene-1,3,5-tricarboxaldehyde within 7 min under...

UV-sensing organic phototransistor memory devices with a doped organic polymer electret composed of triphenylamine-based aggregation-induced emission luminogens

2019 ◽  
Vol 7 (35) ◽  
pp. 11014-11021 ◽  
Author(s):  
Teng-Yung Huang ◽  
Chia-Hui Chen ◽  
Chia-Chi Lin ◽  
Yu-Jung Lee ◽  
Cheng-Liang Liu ◽  
...  
Keyword(s):  
Memory Performance ◽  
Organic Polymer ◽  
Memory Devices ◽  
Aggregation Induced Emission ◽  
Spectral Overlap ◽  
Organic Phototransistor

The UV-sensing OFET memories with enhanced memory performance are developed by introducing the AIEgen-doped electret which could obtain better spectral overlap between the emission of doped electrets and the absorption of pentacene.

scholarly journals Restriction of Conformation Transformation in Excited State: An Aggregation-Induced Emission Building Block Based on Stable Exocyclic C=N Group

iScience ◽  
2020 ◽  
Vol 23 (10) ◽  
pp. 101587
Author(s):  
Wentao Yu ◽  
Han Zhang ◽  
Ping-An Yin ◽  
Fan Zhou ◽  
Zhiming Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Building Block ◽  
Aggregation Induced Emission ◽  
Block Based

Ferrocenyl building block constructing porous organic polymer for gas capture and methyl violet adsorption

2020 ◽  
Vol 27 (4) ◽  
pp. 1247-1261
Author(s):  
Jin Huang ◽  
Zhi-qiang Tan ◽  
Hui-min Su ◽  
Yi-wen Guo ◽  
Huan Liu ◽  
...  
Keyword(s):  
Building Block ◽  
Methyl Violet ◽  
Organic Polymer ◽  
Porous Organic Polymer

scholarly journals Hydrazone connected stable luminescent covalent–organic polymer for ultrafast detection of nitro-explosives

RSC Advances ◽  
2021 ◽  
Vol 11 (62) ◽  
pp. 39270-39277
Author(s):  
Muhammad Asad ◽  
Ya-Jie Wang ◽  
Shan Wang ◽  
Qing-Guo Dong ◽  
Lin-Ke Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Condensation Reaction ◽  
High Sensitivity ◽  
Organic Polymer ◽  
Nitro Explosives ◽  
Ultrafast Detection

A novel H-COP was synthesized through Schiff-base condensation reaction, which shows high sensitivity (Ksv ∼ 106 M−1) and selectivity (μM level) towards nitro-explosives.

scholarly journals Swelling, dewetting and breakup in thin polymer films for cultural heritage

Soft Matter ◽  
2020 ◽  
Vol 16 (6) ◽  
pp. 1485-1497
Author(s):  
Amélie Castel ◽  
Philipp Gutfreund ◽  
Bernard Cabane ◽  
Yahya Rharbi
Keyword(s):  
Atomic Force Microscopy ◽  
Cultural Heritage ◽  
Binary Mixtures ◽  
Polymer Films ◽  
Amorphous Polymer ◽  
Neutron Reflectometry ◽  
Thin Polymer Films ◽  
Force Microscopy ◽  
Atomic Force ◽  
Thin Polymer

The removal of ultrathin amorphous polymer films in contact with nonsolvent/solvent binary mixtures is addressed by means of neutron reflectometry and atomic force microscopy.

Synthesis, crystal structure and photophysical properties of 1,4-bis(1,3-diazaazulen-2-yl)benzene: a new π building block

2018 ◽  
Vol 74 (2) ◽  
pp. 171-176
Author(s):  
Peili Sun ◽  
Zongyao Zhang ◽  
Hongxia Luo ◽  
Pu Zhang ◽  
Yujun Qin ◽  
...  
Keyword(s):  
Molecular Orbital ◽  
Building Block ◽  
Photophysical Properties ◽  
Condensation Reaction ◽  
Energy Levels ◽  
Three Dimensional ◽  
Experimental Result ◽  
Monoclinic System ◽  
H Nmr ◽  
Lowest Unoccupied Molecular Orbital

A dimerized 1,3-diazaazulene derivative, namely 1,4-bis(1,3-diazaazulen-2-yl)benzene [or 2,2′-(1,4-phenylene)bis(1,3-diazaazulene)], C22H14N4, (I), has been synthesized successfully through the condensation reaction between 2-methoxytropone and benzene-1,4-dicarboximidamide hydrochloride, and was characterized by 1H NMR and 13C NMR spectroscopies, and ESI–MS. X-ray diffraction analysis reveals that (I) has a nearly planar structure with good π-electron delocalization, indicating that it might serve as a π building block. The crystal belongs to the monoclinic system. One-dimensional chains were formed along the a axis through π–π interactions and adjacent chains are stabilized by C—H...N interactions, forming a three-dimensional architecture. The solid emission of (I) in the crystalline form exhibited a 170 nm red shift compared with that in the solution state. The observed optical bandgap for (I) is 3.22 eV and a cyclic voltammetry experiment confirmed the energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). The calculated bandgap for (I) is 3.37 eV, which is very close to the experimental result. In addition, the polarizability and hyperpolarizability of (I) were appraised for its further application in second-order nonlinear optical materials.

Highly Fluorinated Trianglimine Macrocycles: A Supramolecular Organic Framework

Synlett ◽  
2021 ◽  
Author(s):  
Tom Kunde ◽  
Tobias Pausch ◽  
Bernd M. Schmidt ◽  
Guido J. Reiss
Keyword(s):  
Crystal Structure ◽  
Material Properties ◽  
Building Block ◽  
Condensation Reaction ◽  
Two Stage ◽  
Fluorinated Ligands ◽  
Important Addition ◽  
Stage Synthesis ◽  
Supramolecular Networks ◽  
Organic Framework

AbstractA novel highly fluorinated dialdehyde was prepared by a two-stage synthesis. This reactive building block for dynamic imine chemistry was used in a condensation reaction to generate the first extensively fluorinated trianglimine. An analysis of the material properties and, especially, the crystal structure of the [3+3] macrocycle revealed a supramolecular organic framework with tubular porous channels. The use of fluorinated ligands to generate hydrophobic electron-deficient channel-like pores is an important addition to the ever-expanding field of supramolecular networks and to trianglimine chemistry in general.

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