Molecular motions of adsorbed CO2 on a tetrazole-functionalized pim polymer studied with 13C NMR

Jeremy K. Moore; Michael D. Guiver; Naiying Du; Sophia E. Hayes; Mark S. Conradi

doi:10.1021/jp4084234

Molecular motions of adsorbed CO₂ on a tetrazole-functionalized pim polymer studied with ¹³C NMR

Jeremy K. Moore
, Michael D. Guiver
, Naiying Du
, Sophia E. Hayes
, Mark S. Conradi

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The CO₂ adsorption in a polymer of intrinsic microporosity (PIM) functionalized by tetrazole (TZPIM) has been studied with in situ ¹³C nuclear magnetic resonance (NMR) spectroscopy at variable temperature and loading conditions. The CO₂ molecules are seen to interact with tetrazole sites through physisorption. The adsorbed system was studied from 8 to 385 K at two loadings of CO₂. The ¹³C NMR resonance lineshapes and relaxation times have been analyzed to give insights into the adsorption process. The CO₂ molecules undergo site to site hopping with accompanying CO₂ reorientations while adsorbed on TZPIM, resulting in line narrowing starting near 100 K. Correspondingly, the spin echo T₂ passes through a minimum at 100 K. The analysis indicates that two kinds of adsorption sites are available.

Original language	English
Pages (from-to)	22995-22999
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	117
Issue number	44
DOIs	https://doi.org/10.1021/jp4084234
State	Published - Nov 7 2013

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title = "Molecular motions of adsorbed CO2 on a tetrazole-functionalized pim polymer studied with 13C NMR",

abstract = "The CO2 adsorption in a polymer of intrinsic microporosity (PIM) functionalized by tetrazole (TZPIM) has been studied with in situ 13C nuclear magnetic resonance (NMR) spectroscopy at variable temperature and loading conditions. The CO2 molecules are seen to interact with tetrazole sites through physisorption. The adsorbed system was studied from 8 to 385 K at two loadings of CO2. The 13C NMR resonance lineshapes and relaxation times have been analyzed to give insights into the adsorption process. The CO2 molecules undergo site to site hopping with accompanying CO2 reorientations while adsorbed on TZPIM, resulting in line narrowing starting near 100 K. Correspondingly, the spin echo T2 passes through a minimum at 100 K. The analysis indicates that two kinds of adsorption sites are available.",

author = "Moore, \{Jeremy K.\} and Guiver, \{Michael D.\} and Naiying Du and Hayes, \{Sophia E.\} and Conradi, \{Mark S.\}",

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T1 - Molecular motions of adsorbed CO2 on a tetrazole-functionalized pim polymer studied with 13C NMR

AU - Moore, Jeremy K.

AU - Guiver, Michael D.

AU - Du, Naiying

AU - Hayes, Sophia E.

AU - Conradi, Mark S.

PY - 2013/11/7

Y1 - 2013/11/7

N2 - The CO2 adsorption in a polymer of intrinsic microporosity (PIM) functionalized by tetrazole (TZPIM) has been studied with in situ 13C nuclear magnetic resonance (NMR) spectroscopy at variable temperature and loading conditions. The CO2 molecules are seen to interact with tetrazole sites through physisorption. The adsorbed system was studied from 8 to 385 K at two loadings of CO2. The 13C NMR resonance lineshapes and relaxation times have been analyzed to give insights into the adsorption process. The CO2 molecules undergo site to site hopping with accompanying CO2 reorientations while adsorbed on TZPIM, resulting in line narrowing starting near 100 K. Correspondingly, the spin echo T2 passes through a minimum at 100 K. The analysis indicates that two kinds of adsorption sites are available.

AB - The CO2 adsorption in a polymer of intrinsic microporosity (PIM) functionalized by tetrazole (TZPIM) has been studied with in situ 13C nuclear magnetic resonance (NMR) spectroscopy at variable temperature and loading conditions. The CO2 molecules are seen to interact with tetrazole sites through physisorption. The adsorbed system was studied from 8 to 385 K at two loadings of CO2. The 13C NMR resonance lineshapes and relaxation times have been analyzed to give insights into the adsorption process. The CO2 molecules undergo site to site hopping with accompanying CO2 reorientations while adsorbed on TZPIM, resulting in line narrowing starting near 100 K. Correspondingly, the spin echo T2 passes through a minimum at 100 K. The analysis indicates that two kinds of adsorption sites are available.

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U2 - 10.1021/jp4084234

DO - 10.1021/jp4084234

M3 - Article

AN - SCOPUS:84889808345

SN - 1932-7447

VL - 117

SP - 22995

EP - 22999

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 44

ER -

Molecular motions of adsorbed CO₂ on a tetrazole-functionalized pim polymer studied with ¹³C NMR

Abstract

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