Iodine Adsorption in a Redox-Active Metal-Organic Framework: Electrical Conductivity Induced by Host-Guest Charge-Transfer

Xinran Zhang, Ivan Da Silva, Rodrigo Fazzi, Alena M. Sheveleva, Xue Han, Ben F. Spencer, Sergey A. Sapchenko, Floriana Tuna, Eric J.L. McInnes, Ming Li, Sihai Yang, Martin Schröder

Результат исследования: Научные публикации в периодических изданияхстатья

7 Цитирования (Scopus)

Аннотация

We report a comparative study of the binding of I2 (iodine) in a pair of redox-active metal-organic framework (MOF) materials, MFM-300(VIII) and its oxidized, deprotonated analogue, MFM-300(VIV). Adsorption of I2 in MFM-300(VIII) triggers a host-to-guest charge-transfer, accompanied by a partial (∼30%) oxidation of the VIII centers in the host framework and formation of I3 - species residing in the MOF channels. Importantly, this charge-transfer induces a significant enhancement in the electrical conductivity (Δσ = 700000) of I2@MFM-300(VIII/IV) in comparison to MFM-300(VIII). In contrast, no host-guest charge-transfer or apparent change in the conductivity was observed upon adsorption of I2 in MFM-300(VIV). High-resolution synchrotron X-ray diffraction of I2@MFM-300(VIII/IV) confirms the first example of self-aggregation of adsorbed iodine species (I2 and I3 -) into infinite helical chains within a MOF.

Язык оригиналаанглийский
Страницы (с-по)14145-14150
Число страниц6
ЖурналInorganic Chemistry
Том58
Номер выпуска20
DOI
СостояниеОпубликовано - 21 окт 2019

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  • Цитировать

    Zhang, X., Da Silva, I., Fazzi, R., Sheveleva, A. M., Han, X., Spencer, B. F., Sapchenko, S. A., Tuna, F., McInnes, E. J. L., Li, M., Yang, S., & Schröder, M. (2019). Iodine Adsorption in a Redox-Active Metal-Organic Framework: Electrical Conductivity Induced by Host-Guest Charge-Transfer. Inorganic Chemistry, 58(20), 14145-14150. https://doi.org/10.1021/acs.inorgchem.9b02176