<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Khayum, Abdul M.</style></author><author><style face="normal" font="default" size="100%">Vijayakumar, Vidyanand</style></author><author><style face="normal" font="default" size="100%">Karak, Suvendu</style></author><author><style face="normal" font="default" size="100%">Kandambeth, Sharath</style></author><author><style face="normal" font="default" size="100%">Bhadra, Mohitosh</style></author><author><style face="normal" font="default" size="100%">Suresh, Karthika</style></author><author><style face="normal" font="default" size="100%">Acharambath, Nikhil</style></author><author><style face="normal" font="default" size="100%">Kurungot, Sreekumar</style></author><author><style face="normal" font="default" size="100%">Banerjee, Rahul</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Convergent covalent organic framework thin sheets as flexible supercapacitor electrodes</style></title><secondary-title><style face="normal" font="default" size="100%">ACS Applied Material &amp; Interfaces</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">AUG</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">28139-28146</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Flexible supercapacitors in modern electronic equipment require light-weight electrodes, which have a high surface area, precisely integrated redox moieties, and mechanically strong flexible free-standing nature. However, the incorporation of the aforementioned properties into a single electrode remains a great task. Herein, we could overcome these challenges by a facile and scalable synthesis of the convergent covalent organic framework (COF) free-standing flexible thin sheets through solid-state molecular baking strategy. Here, redox-active anthraquinone (Dq) and pi-electron-rich anthracene (Da) are judiciously selected as two different linkers in a beta-ketoenamine-linked two-dimensional (2D) COF. As a result of precisely integrated anthraquinone moieties, COF thin sheet exhibits redox activity. Meanwhile, pi-electron-rich anthracene linker assists to improve the mechanical property of the free-standing thin sheet through the enhancement of noncovalent interaction between crystallites. This binder-free strategy offers the togetherness of crystallinity and flexibility in 2D COF thin sheets. Also, the synthesized porous crystalline convergent COF thin sheets are benefited with crack-free uniform surface and light-weight nature. Further, to demonstrate the practical utility of the material as an electrode in energy-storage systems, we fabricated a solid-state symmetrical flexible COF supercapacitor device using a GRAFOIL peeled carbon tape as the current collector.</style></abstract><issue><style face="normal" font="default" size="100%">33</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">8.097</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Suresh, Karthika</style></author><author><style face="normal" font="default" size="100%">Chowdhury, Arindam</style></author><author><style face="normal" font="default" size="100%">Kumar, Sanat K.</style></author><author><style face="normal" font="default" size="100%">Kumaraswamy, Guruswamy</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Critical role of processing on the mechanical properties of cross-linked highly loaded nanocomposites </style></title><secondary-title><style face="normal" font="default" size="100%">Macromolecules</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><volume><style face="normal" font="default" size="100%">52</style></volume><pages><style face="normal" font="default" size="100%">5955-5962</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Polymer &lt;span class=&quot;hitHilite&quot;&gt;nanocomposites&lt;/span&gt; are frequently not at equilibrium-therefore, &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; structure and &lt;span class=&quot;hitHilite&quot;&gt;properties&lt;/span&gt; critically depend &lt;span class=&quot;hitHilite&quot;&gt;on&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; protocol followed in their preparation. Here, we demonstrate that &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; elastic-brittle transition in &lt;span class=&quot;hitHilite&quot;&gt;highly&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;loaded&lt;/span&gt; ice-templated polymer &lt;span class=&quot;hitHilite&quot;&gt;nanocomposites&lt;/span&gt; is sensitively determined by &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; conformation &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; polymer chains during nanocomposite preparation. Macroporous polymer &lt;span class=&quot;hitHilite&quot;&gt;nanocomposites&lt;/span&gt; are synthesized using two preparation pathways, both exhibiting minor modifications &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; ice-templating method wherein an aqueous dispersion &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; nanoparticles, polymers, and cross-linkers is frozen. In one method, &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; matrix polymer is &lt;span class=&quot;hitHilite&quot;&gt;cross-linked&lt;/span&gt; in &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; presence &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; ice, whereas in &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; other method, &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; ice is removed by freeze-drying before &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; polymer is &lt;span class=&quot;hitHilite&quot;&gt;cross-linked&lt;/span&gt;. Although all measurable structural metrics are practically identical for &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; two composites, they exhibit qualitatively different &lt;span class=&quot;hitHilite&quot;&gt;mechanical&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;properties&lt;/span&gt;. &lt;span class=&quot;hitHilite&quot;&gt;Nanocomposites&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;cross-linked&lt;/span&gt; in &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; presence &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; ice show exceptional resilience, recovering elastically from large compression for very high nanoparticle loadings-in some instances, above 90% by weight. Here, &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;critical&lt;/span&gt; particle loading for &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; elastic- brittle transition is dependent &lt;span class=&quot;hitHilite&quot;&gt;on&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; molecular weight &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; polymer. In comparison, samples &lt;span class=&quot;hitHilite&quot;&gt;cross-linked&lt;/span&gt; after freeze-drying appear structurally identical but turn brittle at much lower particle loadings (about 60% by weight), independent &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; matrix polymer molecular weight. We rationalize these differences in terms &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; conformational state &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; polymer during cross- linking. In &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; former case, polymer chains are in good solvent during nanocomposite preparation, while after lyophilization, they are in a poor solvent. &lt;span class=&quot;hitHilite&quot;&gt;The&lt;/span&gt; large spatial extent &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; well-solvated chains and chain-chain overlap during cross-linking results in &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; formation &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; intermolecular cross-links, and we obtain elastic &lt;span class=&quot;hitHilite&quot;&gt;nanocomposites&lt;/span&gt; even at high nanoparticle loadings. In contrast, for chains in collapsed conformations in a bad solvent, chain connectivity during cross-linking is achieved only for much lower particle loadings. Our results reiterate that &lt;span class=&quot;hitHilite&quot;&gt;the&lt;/span&gt; sensitivity &lt;span class=&quot;hitHilite&quot;&gt;of&lt;/span&gt; polymer conformations to different &lt;span class=&quot;hitHilite&quot;&gt;processing&lt;/span&gt; methods can result in large differences in &lt;span class=&quot;hitHilite&quot;&gt;properties&lt;/span&gt;, even though their consequences &lt;span class=&quot;hitHilite&quot;&gt;on&lt;/span&gt; structural characteristics are effectively indistinguishable.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">15</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;
</style></custom3><custom4><style face="normal" font="default" size="100%">&lt;p&gt;&lt;span class=&quot;jhHeader_impact&quot;&gt;5.997&lt;/span&gt;&lt;/p&gt;
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