Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Iodine Adsorption in a Redox-Active Metal-Organic Framework : Electrical Conductivity Induced by Host-Guest Charge-Transfer. / Zhang, Xinran; Da Silva, Ivan; Fazzi, Rodrigo и др.
в: Inorganic Chemistry, Том 58, № 20, 21.10.2019, стр. 14145-14150.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Iodine Adsorption in a Redox-Active Metal-Organic Framework
T2 - Electrical Conductivity Induced by Host-Guest Charge-Transfer
AU - Zhang, Xinran
AU - Da Silva, Ivan
AU - Fazzi, Rodrigo
AU - Sheveleva, Alena M.
AU - Han, Xue
AU - Spencer, Ben F.
AU - Sapchenko, Sergey A.
AU - Tuna, Floriana
AU - McInnes, Eric J.L.
AU - Li, Ming
AU - Yang, Sihai
AU - Schröder, Martin
PY - 2019/10/21
Y1 - 2019/10/21
N2 - 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.
AB - 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.
KW - GAS SORPTION
KW - VOLATILE IODINE
KW - SINGLE-CRYSTAL
KW - CARBON-DIOXIDE
KW - CAPTURE
KW - CHAINS
KW - CONFINEMENT
KW - RELEASE
UR - http://www.scopus.com/inward/record.url?scp=85073108615&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.9b02176
DO - 10.1021/acs.inorgchem.9b02176
M3 - Article
C2 - 31566954
AN - SCOPUS:85073108615
VL - 58
SP - 14145
EP - 14150
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 20
ER -
ID: 21856443