In situ supramolecular polymerization promoted by the marriage of dynamic covalent bonding and pillar[5]arene-based host–guest interaction

2017 ◽  
Vol 53 (6) ◽  
pp. 1144-1147 ◽  
Author(s):  
Panpan Chen ◽  
Yujuan Zhou ◽  
Jie Yang
Keyword(s):  
Covalent Bonding ◽  
Supramolecular Polymer ◽  
Dual Responsive ◽  
Supramolecular Polymerization

A temperature and pH dual-responsive linear supramolecular polymer was efficiently constructed by unifying dynamic covalent bonding and pillar[5]arene-based host–guest interaction through in situ supramolecular polymerization.

scholarly journals Oriented arrangement of simple monomers enabled by confinement: towards living supramolecular polymerization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yingtong Zong ◽  
Si-Min Xu ◽  
Wenying Shi ◽  
Chao Lu
Keyword(s):  
Activation Barrier ◽  
Degree Of Polymerization ◽  
Supramolecular Polymer ◽  
Energy Principle ◽  
Spontaneous Nucleation ◽  
Pyrene Derivatives ◽  
Multifunctional Molecules ◽  
Double Hydroxide ◽  
Supramolecular Polymerization ◽  
Kinetics Of

AbstractThe living supramolecular polymerization technique provides an exciting research avenue. However, in comparison with the thermodynamic spontaneous nucleation, using simple monomers to realize living supramolecular polymerization is hardly possible from an energy principle. This is because the activation barrier of kinetically trapped simple monomer (nucleation step) is insufficiently high to control the kinetics of subsequent elongation. Here, with the benefit of the confinement from the layered double hydroxide (LDH) nanomaterial, various simple monomers, (such as benzene, naphthalene and pyrene derivatives) successfully form living supramolecular polymer (LSP) with length control and narrow dispersity. The degree of polymerization can reach ~6000. Kinetics studies reveal LDH overcomes a huge energy barrier to inhibit undesired spontaneous nucleation of monomers and disassembly of metastable states. The universality of this strategy will usher exploration into other multifunctional molecules and promote the development of functional LSP.

In-situ covalent bonding of polysulfides with electrode binders in operando for lithium–sulfur batteries

2018 ◽  
Vol 402 ◽  
pp. 1-6 ◽  
Author(s):  
ChangAn Yang ◽  
QiaoKun Du ◽  
Zeheng Li ◽  
Min Ling ◽  
Xiangyun Song ◽  
...  
Keyword(s):  
Covalent Bonding ◽  
Lithium Sulfur Batteries ◽  
In Operando ◽  
Lithium Sulfur

In Situ Supramolecular Polymerization of Micellar Nanoobjects Induced by Polymerization

2022 ◽  
pp. 149-155
Author(s):  
Nam Young Ahn ◽  
Sangwoo Kwon ◽  
Suchan Cho ◽  
Chanhyuk Kang ◽  
Jiwon Jeon ◽  
...  
Keyword(s):  
Supramolecular Polymerization

Multi-wall carbon nanotubes with nitrogen-containing carbon coating

2013 ◽  
Vol 67 (8) ◽  
Author(s):  
Elena Tomšík ◽  
Zuzana Morávková ◽  
Jaroslav Stejskal ◽  
Miroslava Trchová ◽  
Petr Šálek ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Carbon Coating ◽  
Covalent Bonding ◽  
Inert Atmosphere ◽  
New Materials ◽  
X Ray ◽  
Multi Wall Carbon Nanotubes ◽  
Transmission Electron

AbstractPolyaniline coating was deposited on the surface of multi-wall carbon nanotubes of Russian and Taiwanese origin in situ during the polymerization of aniline. The deposited polyaniline film was subsequently carbonized under an inert atmosphere at various temperatures to produce coaxial coating of the carbon nanotubes with nitrogen-containing carbon. The new materials were investigated by infrared and Raman spectroscopies, which demonstrated the conversion of the polyaniline coating to a carbonized structure. X-ray photoelectron spectroscopy proved that the carbonized overlayer contains nitrogen atoms in various covalent bonding states. Transmission electron microscopy confirmed the coaxial structure of the composites. The Brunauer-Emmett-Teller method was used to estimate the specific surface area, the highest being 272 m2 g−1. The conductivity of 0.9–16 S cm−1 was measured by the four-point method, and it was only a little affected by the carbonization of the polyaniline coating.

scholarly journals Biomimetic Design of a Robustly Stabilized Folded State Enabling Seed-Initiated Helical Supramolecular Polymerization Under Microfluidic Mixing

2020 ◽  
Author(s):  
Soichiro Ogi ◽  
Aiko Takamatsu ◽  
Kentaro Matsumoto ◽  
Shigehiro Yamaguchi
Keyword(s):  
Molecular Diffusion ◽  
Helical Structure ◽  
Spectroscopic Studies ◽  
Membered Ring ◽  
Racemic Mixture ◽  
Supramolecular Polymer ◽  
Spontaneous Transformation ◽  
Microfluidic Mixing ◽  
Intramolecular Hydrogen ◽  
Supramolecular Polymerization

We have investigated the folding and assembly behavior of an alanine-based monomeric diamide and a cystine-based dimeric diamide bearing pyrene units and solubilizing alkyl chains at their C-termini andN-termini, respectively. In low-polarity solvents, the former molecule forms a folded 7-membered ring conformation with an intramolecular hydrogen bond, while the latter molecule forms a 14-membered ring through double intramolecular hydrogen bonds between two diamide units. Spectroscopic studies revealed that both folded states are thermodynamically unstable and eventually transform into more energetically stable supramolecular polymers. Importantly, compared to the alanine-based diamide, the cystine-based dimeric diamide exhibits a superior kinetic stability in the metastable folded state, as well asan increased thermodynamic stability in the aggregated state. Consequently, spontaneous transformation from the folded state into the aggregated state is retarded even under the conditions of rapid molecular diffusion. Accordingly, the initiation of supramolecular polymerization can be regulated via a seeding approach under microfluidic mixing conditions. Furthermore, the supramolecular polymer composed of the cystine-based dimeric diamide has a helical structure with an enhanced chiral excitonic coupling between the transition dipoles of the pyrene units. Taking advantage of the self-sorting behavior observed in a mixture of l-cysteine- and d-cysteine-based dimeric diamides, a two-step supramolecular polymerization from a racemic mixture was achieved by stepwise addition of the corresponding seeds.

Dual-Responsive DNA Nanodevice for the Available Imaging of an Apoptotic Signaling Pathway in Situ

ACS Nano ◽  
2019 ◽  
Vol 13 (11) ◽  
pp. 12840-12850 ◽  
Author(s):  
Hai Shi ◽  
Yanxia Wang ◽  
Ji Zheng ◽  
Limin Ning ◽  
Yue Huang ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Apoptotic Signaling ◽  
Dual Responsive

In Situ Generation of AgI Quantum Dots by the Confinement of A Supramolecular Polymer Network: A Novel Approach for Ultrasensitive Response

2019 ◽  
Vol 14 (19) ◽  
pp. 3274-3278 ◽  
Author(s):  
You‐Ming Zhang ◽  
Jun‐Xia He ◽  
Wei Zhu ◽  
Wen‐Juan Qu ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Polymer Network ◽  
Supramolecular Polymer ◽  
Novel Approach ◽  
In Situ Generation
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