High-yield postsynthetic modification of MOF with organic-metal precursors
- High-yield postsynthetic modification of MOF with organic-metal precursors
- 김종식; Dong Ok Kim; Dong Wook Kim; Jeasung Park; Mi Sun Jung
- Postsynthetic modification; Metal？organic framework; Organic？metal precursor; BET; Isopropoxytitanatrane; Tetrabenzyl titanium
- Issue Date
- Inorganica chimica acta
- VOL 390-25
- The specific yield of postsynthetic modification for modified IRMOF-16 (HCC-1), synthesized using 1,4-di(4-carboxy-2-hydroxyphenyl)benzene as organic ligand and Zn(NO3)(2)center dot 6H(2)O as metal source, respectively, has been investigated with the variation of its BET surface area, reaction time and organic-metal precursor. Two kinds of HCC-1 having different values of BET surface area (HCC-1H: 3000 m(2)/g and HCC-1L: 2000 m(2)/g) were prepared via solvothermal method for the study of effect of BET surface area, whereas isopropoxytitanatrane and tetrabenzyl titanium were adopted as organic-metal precursors It was observed that even if the specific yields of postsynthetic modification for both organic-metal precursors increased with the value of BET surface area of HCC-1, isopropoxytitanatrane showed relatively higher values than those of tetrabenzyl titanium during the entire range of reaction. These observations led us to conclude that HCC-1H has higher specific number of -OH groups, active sites for postsynthetic modification, and tetrabenzyl titanium experiences more difficulty in diffusing deep into HCC-1 due to its relatively larger molecular size. For the effect of reaction time, while it increased slowly with the reaction time until 48 h and then leveled off for HCC-1H, it increased during the entire range of reaction time for HCC-1L. Crown
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