Department of Chemistry

Permanent URI for this collection

http://presiuniv.ndl.gov.in:4009/handle/123456789/2304

Browse

Browsing Department of Chemistry by Subject "Chemistry Inorganic and Nuclear"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Synthesis and Characterization of Metal Organic Framework Based on 3d and 4f Metals
    Biswas, Biplab
    This thesis covers the broader section of the chemistry and the material sciences of our daily needs. The main objective of our work was to design different 3d and 3d-4f hetero bimetallic Metal Organic Framework (MOF) using different clickable Schiff base ligand having N,N,O donor sites. We have further used co-ligand such as azide, thiocyanate, 4-tert-butyl-benzoic acid to increase the nuclearity of the metal complex. Careful design of these complexes has allowed us to isolate these complexes with versatile structural motif and application in the field of data storage, luminescence and sensing. We have explored the sensing study for the detection of the hazardous analytes such as sulfide (S2-) and Ag+ , Cu2+, Fe3+ by Metal Organic Framework. We have also studied the anti-cancer activity towards the breast cancer cells Zn azido and Zn perchloato complex where we have found that a 0.5 mM dose of the Zn-azido and Zn-perchlorato complex could kill the 81% and 72% of the breast cancer cells respectively. However Zn-azido complex affects the normal cell as well although Zn-perchlorato complex does not affect the normal cells. Hence Znperchlorato complex has potential biological activity and may be used for the therapeutic purposes. We have also synthesised 3d-4f metal complexes which could be used as fluorescence biomarker and could be used as data storage. This thesis covers a broader sector of material science in corroboration of biological studies in few cases.
  • No Thumbnail Available
    Item
    Tunable Luminescence of Graphene Based Nanomaterials: Role of Surfactants and Macromolecules
    Halder, Arnab
    The present thesis entitled “Tunable Luminescence of Graphene Based Nanomaterials: Role of Surfactants and Macromolecules” addresses the synthesis of graphene based nano materials like graphene oxide (GO), chemically modified graphene oxide (CM-GO), graphene oxide polyaniline (GO-PANI) nanocomposite with tunable photoluminescence nature (PL). The role surfactants like sodium dodecyl sulphate (SDS), cetyl trimethyl ammonium bromide (CTAB) has been also described to modulate the PL of GO. This thesis comprises of eight chapters. Chapter 1 deals with the general introduction and brief description of the summary of the research work. The motivation, objectives and plan of the present investigation are also stated in this chapter. Chapter 2 deals with the properties and structure of graphene, the different method of synthesis of graphene existing in literature and the literature review on the photoluminescence properties of GO and GO based nanomaterials till 2020. Chapter 3 describes the method of synthesis with the characterization of GO, CM-GO and GO-PANI nano-composite. Chapter 4 discusses the effect of pH on the PL properties of GO-PANI nano-composite. The interaction between polyanilne and GO changes with the change in pH, which strongly affects the PL properties of the GO-PANI nanocomposite. Chapter 5 includes the study of PL of GO in the aqueous medium in the presence of different concentration of surfactants (SDS and CTAB).The mode interaction between GO and surfactant strongly depends on the pH of the medium which modulates the band gap of GO are described in this chapter. Chapter 6 includes the study of PL of GO-PANI in the aqueous medium in the presence of an anionic surfactant (SDS) at both acidic and alkaline medium. The interaction between GO-PANI and SDS is different in different pH, which modulates the PL of the GO-PANI nano-composite material. Chapter 7 describes the PL properties of both GO and CM-GO in aqueous medium with proper explanation of the origin of the luminescence. The modulation of luminescence both GO and CM-GO by changing concentration also described in this chapter. The conclusion of the research work along with the future prospects obtained from this thesis are presented in Chapter 8.