Show simple item record

dc.contributor.advisorGuru Row, T N
dc.contributor.authorPramanik, Titas
dc.date.accessioned2021-02-19T09:35:34Z
dc.date.available2021-02-19T09:35:34Z
dc.date.submitted2020
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/4886
dc.description.abstractThe search for new multifunctional materials continues unabated, and with the realization that in solids, the material property can be tailored using the variability provided by molecular and submolecular forces. Harnessing intermolecular interactions in organic multicomponent systems forms the basis of the work described in this thesis. Model studies to unravel the variety of energetically favourable arrangements to either augment or generate anticipated physico-chemical properties are presented in three chapters. The relationship between subtle variations in intermolecular interactions involving halogens in solid solutions of different stoichiometries and the ensuing tuning ability of mechanical properties are described in Chapter 2. The property of mechanical bending, plastic as well as elastic, in methodically designed “solid solution of cocrystals” and its correlation with halogen bonded networks forms the basic theme of this work. The hitherto unexplored microstructural organization in organic eutectics is outlined using a series of cognate experiments involving variable temperature synchrotron X-ray powder diffraction, variable temperature high-resolution Raman spectroscopy, and electron microscopy form the content of Chapter 3 & 4. The enigma of the powder diffraction data depicting the components as a mixture while the bulk melting point is unique and is lower than the melting points of the individual components is sorted out. The final chapter describes the construction of a cheap, environmental friendly, and easy to synthesize ultrahigh proton conducting material based on salt cocrystals of amino acids and oxalic acid. It is observed that these materials possess the highest proton conductivity value (3.03 * 10-2 S cm-1 at 60 °C and 95% RH) among all pure organic-based materials designed and reported so far in the literature.en_US
dc.description.sponsorshipUGS SRFen_US
dc.language.isoen_USen_US
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertationen_US
dc.subjectOrganic Functional Materialsen_US
dc.subjectOrganic eutecticsen_US
dc.subjectProton Conductivityen_US
dc.subjectPlastic Bendingen_US
dc.subjectSolid Solutionen_US
dc.subject.classificationResearch Subject Categories::NATURAL SCIENCESen_US
dc.titleDiversity and Structure-Property Correlation in Disordered Multicomponent Organic Crystal Formsen_US
dc.typeThesisen_US
dc.degree.namePhDen_US
dc.degree.levelDoctoralen_US
dc.degree.grantorIndian Institute of Scienceen_US
dc.degree.disciplineFaculty of Scienceen_US


Files in this item

This item appears in the following Collection(s)

Show simple item record