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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 Helical Inversion of the Self-Assembled Ligands Composed of Terpyridine and Peptide Moieties in the Presence of Co2+

2018년 2월 5일 19시 46분 30초
INOR.P-74 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
JAEHYEONG KIM, Ka Young Kim1, Jong Hwa Jung1,*
Nano chemistry laboratory, Gyeongsang National University, Korea
1Department of Chemistry, Gyeongsang National University, Korea
We present helix inversion of self-assembled peptide-based ligands composed of one alanine and three glycine moieties with Co2+ and its helical enhancement of an achiral terpyridine moiety. The helicity of peptide-based ligands is controlled by strain induced chirality with complex ligand to Co2+ ratios. The self-assembled S-1 complex with the octahedral structure in less than 0.7 equiv. of Co2+ showed the right-handed (P) helicity. In contrast, the self-assembled S-1 complex with coexisting octahedral and square pyramidal structures in the presence of 1.0 equiv. of Co2+ revealed the left-handed (M) helicity. The helicity of self-assembled R-1 complexes with Co2+ showed absolutely opposite to that of the self-assembled S-1 complex. Furthermore, the Circular Dichroism (CD) intensities of the self-assembled S-1 and R-1 complexes with Co2+ were 900–1500-fold amplified compared to those of free S-1 and R-1. We also found that the helical inversion process was fully reversible and controllable.