<?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%">Ganapathy, Subramanian</style></author><author><style face="normal" font="default" size="100%">Delevoye, L.</style></author><author><style face="normal" font="default" size="100%">Arnoureux, J. P.</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Heteronuclear dipolar decoupling effects on multiple-quantum and satellite-transition magic-angle spinning NMR spectra</style></title><secondary-title><style face="normal" font="default" size="100%">Magnetic Resonance in Chemistry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">heteronuclear broadening</style></keyword><keyword><style  face="normal" font="default" size="100%">heteronuclear decoupling</style></keyword><keyword><style  face="normal" font="default" size="100%">homogeneous broadening</style></keyword><keyword><style  face="normal" font="default" size="100%">MQMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">quadrupolar nuclei</style></keyword><keyword><style  face="normal" font="default" size="100%">Solid-state NMR</style></keyword><keyword><style  face="normal" font="default" size="100%">STMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">TPPM</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">OCT</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">10</style></number><publisher><style face="normal" font="default" size="100%">JOHN WILEY &amp; SONS LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">948-954</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We here report on the influence of heteronuclear dipolar decoupling on the Al-27 3QMAS, 5QMAS, and the double-quantum filter-satellite-transition magic-angle spinning (DQF-STMAS) spectra of a strongly dipolar-coupled system, gibbsite. The requirements for heteronuclear dipolar decoupling increase with the order of coherence evolving in the indirect dimension of a two-dimensional (2D) experiment. The isotropic line width of the high-resolution 2D spectra, in samples like gibbsite, is composed of four parts: the distribution of isotropic shifts (delta(ISO), delta(QIS)), the homogeneous broadening related to the proton-proton flip-flop terms, the Al-27-Al-27 homonulcear dipolar couplings, and the H-1-Al-27 heteronuclear dipolar couplings. It is shown that, even in the case of gibbsite, where a strong proton-proton bath exists, the main resolution limiting factor in these experiments resides in the H-1-Al-27 dipolar interaction. Copyright (C) 2008 John Wiley &amp;amp; Sons, Ltd.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">10</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%">1.226</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%">Goswami, M.</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Dittmer, J.</style></author><author><style face="normal" font="default" size="100%">Nielsen, N. C.</style></author><author><style face="normal" font="default" size="100%">Ganapathy, Subramanian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Sensitivity enhancement of Si-29 double-quantum dipolar recoupling spectroscopy by Carr-Purcell-Meiboom-Gill acquisition method</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics Letters</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">AUG</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">4-6</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">478</style></volume><pages><style face="normal" font="default" size="100%">287-291</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;An enhancement in the detection sensitivity of dipolar recoupled Si-29 double-quantum magic-angle spinning experiment is shown with a Carr-Purcell-Meiboom-Gill (CPMG) train of pi pulses during the acquisition period. Symmetry-adapted pulse schemes, such as POST-C7 and SR26(4)(11), are used for the double-quantum excitation. Application of POST-C7-CPMG method for framework characterisation is demonstrated in the disordered and catalytically important ZSM-5 molecular sieve. Based on the observed double-quantum dipole-dipole correlations and the known T-site Si connectivities, the assignment of all the signals is made for the orthorhombic phase of the as-synthesised (CN form) material. (C) 2009 Elsevier B. V. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">4-6</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.280</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%">Harindranath, K.</style></author><author><style face="normal" font="default" size="100%">Viswanath, K. Anusree</style></author><author><style face="normal" font="default" size="100%">Chandran, C. Vinod</style></author><author><style face="normal" font="default" size="100%">Braeuniger, Thomas</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Ajithkumar, Thalasseril G.</style></author><author><style face="normal" font="default" size="100%">Joy, Pattayil Alias</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evidence for the co-existence of distorted tetrahedral and trigonal bipyramidal aluminium sites in SrAl12O19 from Al-27 NMR studies</style></title><secondary-title><style face="normal" font="default" size="100%">Solid State Communications</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Local structure</style></keyword><keyword><style  face="normal" font="default" size="100%">MQMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">Nuclear magnetic resonance</style></keyword><keyword><style  face="normal" font="default" size="100%">Strontium aluminate</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JAN</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">5-6</style></number><publisher><style face="normal" font="default" size="100%">PERGAMON-ELSEVIER SCIENCE LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">150</style></volume><pages><style face="normal" font="default" size="100%">262-266</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Strontium aluminate, SrAl12O19, is a ceramic material having the hexagonal magnetoplumbite-type structure, with multiple Al coordination environments. An earlier low-field Al-27 solid-state NMR study reported five different Al sites in this system: one AlO4, one AlO5, and three AlO6 sites; whereas a later high-field study showed that the AlO5 site is a distorted AlO4 site with a very large quadrupolar coupling constant (similar to 20 MHz). Our magic angle spinning (MAS) and 3-quantum magic angle spinning (3QMAS) NMR studies at 7.05 T unambiguously show evidence for an AlO5 site. However, evidence for the presence of a distorted AlO4 site is obtained from studies at high fields (16.4 and 17.6 T), in addition to the AlO5 site. Thus the present solid-state NMR studies give evidence for the simultaneous presence of both the five-coordinated and distorted four-coordinated sites in this system. (C) 2009 Elsevier Ltd. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">5-6</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.979</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%">Chandrakesan, Muralidharan</style></author><author><style face="normal" font="default" size="100%">Sarkar, Bidyut</style></author><author><style face="normal" font="default" size="100%">Mithu, Venus Singh</style></author><author><style face="normal" font="default" size="100%">Rajiv M. Abhyankar</style></author><author><style face="normal" font="default" size="100%">Bhowmik, Debanjan</style></author><author><style face="normal" font="default" size="100%">Nag, Suman</style></author><author><style face="normal" font="default" size="100%">Sahoo, Bankanidhi</style></author><author><style face="normal" font="default" size="100%">Shah, Riddhi</style></author><author><style face="normal" font="default" size="100%">Gurav, Sushma</style></author><author><style face="normal" font="default" size="100%">Banerjee, Raja</style></author><author><style face="normal" font="default" size="100%">Dandekar, Sucheta</style></author><author><style face="normal" font="default" size="100%">Jose, Jaya C.</style></author><author><style face="normal" font="default" size="100%">Sengupta, Neelanjana</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Maiti, Sudipta</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Basic structural motif and major biophysical properties of Amyloid-beta are encoded in the fragment 18-35</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Alzheimer's disease</style></keyword><keyword><style  face="normal" font="default" size="100%">Fluorescence correlation spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein aggregation</style></keyword><keyword><style  face="normal" font="default" size="100%">Solid-state NMR</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">AUG</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">SI</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">422</style></volume><pages><style face="normal" font="default" size="100%">80-87</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Aggregation and misfolding of the amyloid beta (A beta) peptide is thought to initiate Alzheimer's disease (AD). Here we study the role played by its central segment (A beta(18-35)) in determining these properties. A beta(18-35) has a solubility of 18 mu M. The soluble fraction consists mainly of small oligomers, which have mixed beta-sheet and random coil structures. The monomer is mostly a random coil with some residual compactness. Aggregated A beta(18-35) forms fibrils of width 3.0 +/- 0.7 nm, which is consistent with a hairpin shape. Each of these properties has a close similarity to A beta(40). Remarkably, solid state NMR indicates that the fibrils also retain the secondary structure and tertiary contacts of A beta(40). This is the shortest fragment of A beta reported so far which preserves its fibrillar architecture, including the hairpin turn, as well as its solution phase conformational properties. Residues 18-35 should therefore be a key target of AD therapeutics. (C) 2013 Published by Elsevier B. V.&lt;/p&gt;</style></abstract><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.028
</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%">Singh, Baljeet</style></author><author><style face="normal" font="default" size="100%">Mote, Kaustubh R.</style></author><author><style face="normal" font="default" size="100%">Gopinath, Chinnakonda S.</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Polshettiwar, Vivek</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">SBA-15-oxynitrides as a solid-base catalyst: effect of nitridation temperature on catalytic activity</style></title><secondary-title><style face="normal" font="default" size="100%">Angewandte Chemie-International Edition</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">heterogeneous catalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanostructures</style></keyword><keyword><style  face="normal" font="default" size="100%">NMR spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">photoelectron spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">solid-state structures</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2015</style></year><pub-dates><date><style  face="normal" font="default" size="100%">MAY</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">20</style></number><publisher><style face="normal" font="default" size="100%">WILEY-V C H VERLAG GMBH</style></publisher><pub-location><style face="normal" font="default" size="100%">BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY</style></pub-location><volume><style face="normal" font="default" size="100%">54</style></volume><pages><style face="normal" font="default" size="100%">5985-5989</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Solid bases, such as SBA-15-oxynitrides, have attracted considerable interest for potential applications as catalysts in important industrial processes. Reported herein is that by simply tuning the temperature of nitridation (ammonolysis), the catalytic activity of these solid bases can be enhanced. Solid-state NMR spectroscopy and XPS studies provided the reasoning behind this change in activity.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">20</style></issue><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%">11.709</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%">Jha, Ajay</style></author><author><style face="normal" font="default" size="100%">Mote, Kaustubh R.</style></author><author><style face="normal" font="default" size="100%">Chandra, Suman</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Dasgupta, Jyotishman</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Photoactive anthraquinone-based host-guest assembly for long-lived charge separation</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Physical Chemistry C </style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">MAY</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">125</style></volume><pages><style face="normal" font="default" size="100%">10891-10900</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Porous 2D covalent organic frameworks (COF) that are assembled axially through weak p-stacking interactions can provide reticular charge transport channels while playing host to kinetically stabilized reactive molecular redox states. Here we demonstrate a host-guest supramolecular charge transfer (CT) assembly using photoactive anthraquinone-based COF as an acceptor while incarcerating the electron donor N,N-dimethylaniline (DMA) inside it. Employing femtosecond broadband transient absorption spectroscopy in combination with electron paramagnetic resonance (EPR) studies, we show that the CT occurs rapidly within &lt;110 fs after photoexcitation, subsequently leading to long-lived charge separation with 13% quantum efficiency at room temperature. The photoinduced EPR signature of the long-lived confined DMA cation radical confirms the disparate regions of charge localization while H-1-C-13 correlation experiments using solid-state NMR spectroscopy enumerate the packing of the amines inside the host-guest COF assembly. Our work demonstrates the potency of charge transport pathways in supramolecular assemblies for efficient charge separation which if optimally tuned should pave the way for COF-based photocatalytic reaction centers.</style></abstract><issue><style face="normal" font="default" size="100%">20</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%">4.126</style></custom4></record></records></xml>