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  • 02월 22일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Lanthanide(III)-Cored Dendrimer Complexes through Molecular Engineering: New Design Criteria and Unusual Photophysical Investigations

등록일
2008년 2월 12일 14시 02분 54초
접수번호
0975
발표코드
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발표시간
금 15시 : 00분
발표형식
심포지엄
발표분야
Molecular Photonics Materials and Polymers for Future TechnologyⅡ
저자 및
공동저자
김환규, 곽봉규, 이동현, 서강득
고려대학교 신소재화학과,
We present that the stable and inert Ln(III)-cored complexes based on anthracene, naphthalene, and Pt-porphyrin dendritic ligands exhibit much stronger near-IR emission band of the 4f-4f electronic transition. The emission intensity of the lanthanide complexes was dramatically enhanced by introducing the Fréchet aryl-ether dendrons, mainly due to the site-isolation effect. All possible energy transfer pathways will be explored and discussed. Surprisingly, our photophysical studies suggest that energy transfer pathway does not influence the lanthanide emission enhancement. But, a higher spectral overlap integral value and a higher luminescence quantum efficiency of the luminescent ligand in Ln(III)-cored dendrimer complexes are critical factors for lanthanide emission enhancement.

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