초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Chemical Patterning in Single Crystals of Metal–Organic Frameworks by Photo-Cycloaddition Reaction in a Single-Crystal-to-Single-Crystal manner

2020년 9월 14일 17시 28분 05초
INOR.P-163 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:30~18:00
Inorganic Chemistry
저자 및
In-Hyeok Park, Eunji Lee1, Shim Sung Lee2,*, Jagadese J. Vittal3,*
Graduate School of Analytical Science and Technology, Chungnam National University, Korea
1Department of Chemistry, Gangneung-Wonju National University, Korea
2Department of Chemistry, Gyeongsang National University, Korea
3Department of Chemistry, National University of Singapore, Singapore
※ 국외소속으로 등록된 저자의 승인여부는 최소 3일이내 발표자 email로 알려드립니다.
승인 1건
Metal-organic framework (MOFs) structures are known to exhibit unusual structural flexibility in response to exchange of guest molecules present in the voids. Here we demonstrate that the guest solvent molecules in the voids have a great influence on the outcome of the solid state photochemical reactions in three highly strained Cd(II) MOFs with cds topology [1]. In the railroad track-like [Cd2(bpe)2] chains of the three MOFs, the olefin bond pairs in the bpe (4,4’-bipyridylethylene) ligands undergo photochemical [2+2] cycloaddition reaction under UV light in a single-crystal-to-single-crystal (SCSC) manner. For instance, partial photoreaction in two MOFs with no guest solvent and DMA respectively led to the formation of two photoproducts, ABAB type and AABBAABB type (where A and B are unreacted bpe pairs and cyclobutane rings, respectively). Surprisingly, the MOF with DMF lattice solvent undergoes 100% photoreaction but leading to the photoproduct with broken chains of [Cd2(rctt-tpcb)2] that resembles damaged railroad track. In other words, the strain created by the quantitative formation of cyclobutane rings, is released by breaking one of the rails. More interesting examples are waiting to be explored in the future to underline the role played by the guest solvents on the physical and chemical properties of MOFs.