Synthesis of Blue Luminescent Materials Derived from Oxazoline Ligand
- 발행기관 고려대학교 대학원
- 발행년도 2004
- 학위명 박사
- 학과 대학원:소재화학과
- 식별자(기타) DL:000014913597
- 서지제어번호 000045211903
초록/요약
The synthesis, structure, and properties of six luminescent oxazolylphenoxide complexes and the first structural characterization of pyridylpyrrolide metal complexes are reported. A series of new zinc complexes, bis(oxazolylphenoxy)zinc, (R1R2)2Zn (R = Me, Et, iPr, tBu, and Ph), that vary in their substituents on the oxazolylphenoxy ring (Me, Et, iPr, tBu, and Ph), were prepared. Pyrrole substitution produced small structural changes in the complexes and affected the fluorescence properties very little. The zinc complexes were found to be luminescent, emitting at 495 nm. A total of four crystal structures are reported, (Ligand)2Zn, (Ligand)2Zn, and (Ligand)BF2. In particular ligand crystallizes as a doubly hydrogen bonded dimer with non-coplanar oxazoline and phenol rings. The solid-state structures of (Ligand)2Zn and (Ligand)2Zn revealed that despite the large change in steric bulk, the two compounds have very similar structures. Molecular orbital calculations were performed on Ligand, (Ligand)Zn, and (Ligand)2Zn using Gaussian 98 methods. It was found that the main transition (HOMO？LUMO) for all three molecules is a ？-？* transition and that in the inorganic complexes, the metal atom (zinc) present has very little effect on transition.
more목차
1. Introduction
2. Result and Discussion
Synthesis of achiral phenoxy-oxazoline ligands
Synthesis of Zn metal complexes
3. Experimental Section
Preparation of achiral phenoxy-oxazoline 1
Preparation of achiral phenoxy-oxazoline 2
Preparation of achiral phenoxy-oxazoline 3
Preparation of achiral phenoxy-oxazoline 4
Synthesis of bis(oxa)zinc complex 5
Synthesis of bis(oxa)zinc complex 6
Synthesis of bis(oxa)zinc complex 7
Synthesis of bis(oxa)zinc complex 8
X-ray crystallographic data
Selected bond angle and bond length Figures
4. Reference
