03673nas a2200265 a 450000500170000000800410001703500150005810000200007324501110009326000570020430000440026149000280030550001480033350200580048152025130053965000290305265000260308165000210310770000340312870000360316270000430319871000410324181000600328285600650334220260818085554.0260114s20249999th u  ms t    000   eng d  a.b124701441 aSaikia, Ranjita10aCu-based metal-organic polyhedra for encapsulation and controlled delivery of glycine betaine to rice crop  aPathum Thani :bAsian Institute of Technology,c2024  a109 leaves :bill.+e 1 online resource1 aThesis ;vno. ISE-24-17  aA thesis submitted in partial fulfillment of the requirements for the degree of  Master of Science in Bio-Nano Material Science and Engineering  aThesis (M. Sc.) - Asian Institute of Technology, 2024  aAgriculture plays a crucial role in providing sufficient food supply, but it faces  enormous challenges in maximizing the supply of agrochemicals to increase crop yields  while minimizing the adverse environmental impacts of these chemicals. The repeated  and unchecked use of these agricultural chemicals might be dangerous to the economy,  the environment, and human health. Nanotechnology offers enormous promise in  agriculture by synthesizing agrochemical delivery systems with controlled release  properties, improving application efficacy and environmental safety while minimizing  the negative impacts on non-target species. In recent times, there has been an increase  in the use of nano-porous materials in agriculture as hosts for encapsulation of species,  such as agrochemicals, allowing precise and regulated release of them. Particularly, the  discovery of an entirely novel group of compounds known as Metal-Organic  Frameworks (MOFs) and Metal-Organic Polyhedra (MOPs) has proven to have  remarkable promise for aiding targeted delivery of agrochemicals. They are particularly  important as a carrier because of their extensive surface area and adaptable pores that  can take in certain guest molecules. It is important to remember that MOPs are a very  new and active research area. The present study explored copper-based Metal-Organic  Polyhedra (Cu-MOPs) as novel carriers for encapsulation and targeted delivery of the  plant osmolyte Glycine betaine (GB), therefore alleviating salt stress. The Cu-MOPs  were synthesized via a one-step procedure at room temperature by utilizing Basic  Copper Carbonate (BCC) as the metal source and Isophthalic acid, and 5-amino  isophthalic acid as the organic ligands for Cu-MOP-1 and Cu-MOP-2, respectively. The  Cu-MOPs were also synthesized in the presence of the chemical Glycine betaine (GB),  which was taken as a guest. The encapsulation efficiency, loading percentage, and  release kinetics of the Cu-MOPs were determined to check the better one.  Characterization methods of MOPs include FTIR, UV-analysis, XRD, etc. The MOP  giving the better encapsulation and release profile was selected and used for controlled  delivery of GB to the salt-sensitive rice variety Pathumthani-1 (PTT1), grown under  different concentration of salt solution (0 mM and 150 mM NaCl) under greenhouse  condition to alleviate salt stress. The effectiveness in mitigating the salt stress was  determined by comparing the performance of the GB@MOP with pure GB.  0aMetal-organic frameworks 0aCopper in agriculture 0aPorous materials1 aRicco, Raffaele,eChairperson0 aSuriyan Cha-um,eCo-chairperson1 aBora, Tanujjal,eExamination Committee2 aAIT Scholarships,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ISE-24-17403Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B23353