当前位置: X-MOL 学术Cryst. Growth Des. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Temperature-Dependent Supramolecular Isomeric Zn(II)-Metal–Organic Frameworks and Their Guest Exchange
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2020-05-15 , DOI: 10.1021/acs.cgd.0c00443
Huiyeong Ju 1, 2 , Yoichi Habata 2 , Shim Sung Lee 1
Affiliation  

A pair of three-dimensional metal–organic framework supramolecular isomers (1a and 2a) prepared from the solvothermal reactions of Zn(NO3)2·4H2O, 1,4-bis(4-pyridyl)piperazine (bpp), and 4,4′-oxybis(benzoic acid) (H2obc) in different temperatures was structurally elucidated, and a series of guest exchanges on these isomers were performed without the loss of single crystallinity. At 110 and 130 °C in DMF/H2O, an 8-fold [4 + 4] interpenetrated coordination polymer {[Zn(bpp)(obc)]·3H2O}n (1a) with sra topology and a self-penetrated coordination polymer {[Zn3(bpp)3(obc)3]·2DMF·4H2O}n (2a) with a new topology were isolated, respectively. In the guest-exchange experiments, water molecules in isomer 1a were displaced by acetone and ethylene glycol molecules, while dimethylformamide molecules in isomer 2a were replaced by acetone and ethylene glycol as well as bulkier diethylene glycol due to its larger void. Photoluminescence properties of two isomers and their guest-exchanged products were also measured and discussed.

中文翻译:

温度相关的超分子异构锌(II)-金属有机骨架及其来宾交换

由Zn(NO 32 ·4H 2 O,1,4-双(4-吡啶基)哌嗪(bpp)的溶剂热反应制备的一对三维金属-有机骨架超分子异构体(1a2a)在结构上阐明了在不同温度下的4,4'-氧双(苯甲酸)(H 2 obc),并且在这些异构体上进行了一系列客体交换而没有损失单结晶性。在110处和在DMF / H 130℃ 2 O,8倍[4 + 4]互穿配位聚合物{[锌(BPP)(OBC)]·3H 2 ö} Ñ1A)与SRA拓扑和自渗透配位聚合物{[Zn分别隔离了具有新拓扑的3(bpp)3(obc)3 ]·2DMF·4H 2 O} n2a)。在客体交换实验中,异构体1a中的水分子被丙酮和乙二醇分子置换,而异构体2a中的二甲基甲酰胺分子被丙酮和乙二醇以及体积更大的二甘醇所取代,因为它们的空隙更大。还测量和讨论了两种异构体及其客体交换产物的光致发光性质。
更新日期:2020-07-01
down
wechat
bug