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Three new Tb(Ⅲ) complexes were synthesized: Tb(acac)_3(Cl-phen), Tb(acac)_3 (diph-phen), Tb(tpb)_3(phen) The analyses were carried out by elemental analysis and FAB-mass spectrometry. By the comparison of the excitation spectra and the UV-vis absorp...
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RISS 인기검색어
https://www.riss.kr/link?id=A19577704
- 저자
- 발행기관
- 학술지명
- 권호사항
-
발행연도
1998
-
작성언어
Korean
-
KDC
505
-
자료형태
학술저널
-
수록면
129-136(8쪽)
- 제공처
- 소장기관
-
0
상세조회 -
0
다운로드
부가정보
다국어 초록 (Multilingual Abstract)
Three new Tb(Ⅲ) complexes were synthesized: Tb(acac)_3(Cl-phen), Tb(acac)_3 (diph-phen), Tb(tpb)_3(phen) The analyses were carried out by elemental analysis and FAB-mass spectrometry. By the comparison of the excitation spectra and the UV-vis absorption spectra of these complexes, the green emission at 547 nm is due to the LMCT, which is followed by the emissive decay from ^5D_4level to ^7F_5 level of Tb(Ⅲ) ion According to the emission spectra, the relative quantum yield can be suggest as (Cl-phen) > Tb(acac)_3(diph-phem) > Tb(acac)_3(phem). These results imply that the emission light can be amplified by the suitabel selection of the anionic ligand which can do best in the LMCT. Furthermore, the brightness in green emission is greater for Tb(acac)_3(Cl-phen) than for Tb(acac)_3(phen) in solid, which may result from the fact that the chlorine substituent on phenanthroline attributes its electron-withdrawing factor to the electron environment of the central metal.
Three new Tb(Ⅲ) complexes were synthesized: Tb(acac)_3(Cl-phen), Tb(acac)_3 (diph-phen), Tb(tpb)_3(phen) The analyses were carried out by elemental analysis and FAB-mass spectrometry. By the comparison of the excitation spectra and the UV-vis absorption spectra of these complexes, the green emission at 547 nm is due to the LMCT, which is followed by the emissive decay from ^5D_4level to ^7F_5 level of Tb(Ⅲ) ion According to the emission spectra, the relative quantum yield can be suggest as (Cl-phen) > Tb(acac)_3(diph-phem) > Tb(acac)_3(phem). These results imply that the emission light can be amplified by the suitabel selection of the anionic ligand which can do best in the LMCT. Furthermore, the brightness in green emission is greater for Tb(acac)_3(Cl-phen) than for Tb(acac)_3(phen) in solid, which may result from the fact that the chlorine substituent on phenanthroline attributes its electron-withdrawing factor to the electron environment of the central metal.
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