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Suwadee Jiajaroen. Solid state self-assembly and structural features of novel functional lanthanide complexes. Doctoral Degree(Chemistry). Thammasat University. Thammasat University Library. : Thammasat University, 2022.
Solid state self-assembly and structural features of novel functional lanthanide complexes
การรวมตัวในสถานะของเเข็งและสมบัติทางโครงสร้างของสารประกอบเชิงหน้าที่แลนทาไนด์ชนิดใหม่
Name: Suwadee Jiajaroen
keyword:
Lanthanide compounds
Abstract:
This dissertation focuses on the synthesis and characterization of functional lanthanide coordination compounds based on crystal engineering and self-assembly with oxygen-donor ligands. Throughout the dissertation, twenty-one novel lanthanide coordination compounds were synthesized. The compounds were fully characterized by analytical and spectroscopic techniques, and their solid-state structures were established by single crystal X-ray diffraction. Chapter 3 of the dissertation describes the construction of a three-dimensional (3D) lanthanide supramolecular framework based on 2-thiopheneacrylic acid (Htpa) ligand, [Ln(tpa)3(H2O)3]∙3(Htpa) (Ln = Tb (3a), Dy (3b), and Er (3c)). The formation of the supramolecular framework was driven by molecular self-assembly through complementary hydrogen bonding interactions between [Ln(tpa)3(H2O)3] complex molecules. The channels within these hydrogen-bonded frameworks can accommodate Htpa molecules to allow the formation of cocrystals via strong hydrogen bonds. Notably, with the thiophene ring and carboxylate group consisting of a π-conjugated system, the tpa ligand can provide an antenna effect toward the terbium(III) based complex, showing green luminescence with lifetime on the microsecond scale. Four families of lanthanide coordination polymers bearing the tetrabromobenzene-1,4-dicarboxylate (Br4bdc) ligands, namely, [Ln(Br4bdc)1.5(MeOH)3] (41Ln = Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy), [Ln2(Br4bdc)2(NO3)2(MeOH)4] (42Ln = Ce, Pr, Nd, Sm), [Ln(Br4bdc)(NO3)(MeOH)] (43Ln = Gd, Tb, Dy), and [Ln2(Br4bdc)3(H2O)2.3 (MeOH)2.7] (44Ln = Gd, Tb, Dy), were synthesized and the results are presented in chapter 4 of the dissertation. It is evident that the structure diversity of these compounds depends on the type of solvents, counter anions, and the lanthanide contraction effect. Compounds in series 41Ln, 42Ln, and 43Ln have a 2D layer, while series 44Ln shows a 3D framework. The europium(III)- and terbium(III) containing compounds showed a highly selective and sensitive multifunctional luminescent sensor towards acetone, water, and Fe3+ ions through the fluorescence quenching effect. The representative compounds (41Eu, 42Pr, 43Tb, and 44Tb) of the series show CO2 adsorption features. In addition, variable-temperature (2-300 K) magnetic susceptibility for the Gd- and Dy-based compounds were studied
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Kittipong Chainok
Role:
advisor
Name: Supakorn Boonyuen
Role:
co-advisor
Name: Winya Dungkaew
Role:
co-advisor
Created:
2022
Modified:
2023-07-11
Issued:
2023-07-11
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degree
Descipline: Chemistry
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.035223 วินาที
Suwadee Jiajaroen
| Title | Contributor | Type |
|---|---|---|
| Solid state self-assembly and structural features of novel functional lanthanide complexes
มหาวิทยาลัยธรรมศาสตร์ Suwadee Jiajaroen | Kittipong Chainok, Supakorn Boonyuen, Winya Dungkaew, | วิทยานิพนธ์/Thesis |
Kittipong Chainok
Supakorn Boonyuen
Winya Dungkaew