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  • 02월 22일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Assembly of a Redox-Active Three-Dimensional Coordination Polymer: Single-Crystal-to-Single-Crystal Transformations on Guest Removal

등록일
2008년 2월 14일 10시 46분 30초
접수번호
1271
발표코드
28P164포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅳ>
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
양우승, 백명현
서울대학교 화학부,
A 3D coordination polymer, {[Ni(cyclam)]2[BPTC]}n•4nH2O (1), has been assembled from [Ni(cyclam)](ClO4)2 (cyclam = 1,4,8,11-tetraazacyclotetradecane) and H4BPTC (H4BPTC = 1,1´-biphenyl-2,2´,5,5´-tetracarboxylic acid). When solid 1 was immersed in the MeCN solution of Pd(NO3)2 at room temperature, solids including Pd (2.4 ± 0.4 nm, diameter) nanoparticles were formed by the redox reactions between Ni(II) ions incorporated in 1 and metal ions, as evidenced by HRTEM images, EPR, and XPS spectra. When 1 was desolvated at 180 oC under vacuum for 4 h, it was transformed to dehydrated compound {[Ni(cyclam)]2[BPTC]}n (2) in the single-crystal-to-single-crystal manner. Transformation of 1 to 2 involves rearrangement of molecular components in the crystal via rotation of carboxylate, macrocycle, and biphenyl units. Solid 2 adsorbs CO2 gas in the two-step process, and show selectivity over other gases (N2, CH4, which can be applied in gas separation processes.

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