Chromium(II) Metal-Organic Polyhedra as Highly Porous Materials

Jinhee Park; Zachary Perry; Ying Pin Chen; Jaeyeon Bae; Hong Cai Zhou

doi:10.1021/acsami.7b09339

Chromium(II) Metal-Organic Polyhedra as Highly Porous Materials

Jinhee Park
, Zachary Perry
, Ying Pin Chen
, Jaeyeon Bae
, Hong Cai Zhou

Department of Physics and Chemistry

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

79 Scopus citations

Abstract

Herein we report for the first time the synthesis of Cr(II)-based metal-organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr₂ units), cage symmetries, and packing motifs enable these materials to achieve Brunauer-Emmett-Teller surface areas of up to 1000 m²/g. Reducing the aggregation of the Cr(II)-based MOPs upon activation makes their pores more accessible than their Cu(II) or Mo(II) counterparts. Further comparisons of surface areas on a molar (m²/mol cage) rather than gravimetric (m²/g) basis is proposed as a rational method of comparing members of a family of related molecular materials.

Original language	English
Pages (from-to)	28064-28068
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	33
DOIs	https://doi.org/10.1021/acsami.7b09339
State	Published - 23 Aug 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

air-stable MOPs
chromium(II) paddlewheel
chromium(II) porous materials
metal-organic polyhedra (MOPs)
oxygen adsorption

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10.1021/acsami.7b09339

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title = "Chromium(II) Metal-Organic Polyhedra as Highly Porous Materials",

abstract = "Herein we report for the first time the synthesis of Cr(II)-based metal-organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr2 units), cage symmetries, and packing motifs enable these materials to achieve Brunauer-Emmett-Teller surface areas of up to 1000 m2/g. Reducing the aggregation of the Cr(II)-based MOPs upon activation makes their pores more accessible than their Cu(II) or Mo(II) counterparts. Further comparisons of surface areas on a molar (m2/mol cage) rather than gravimetric (m2/g) basis is proposed as a rational method of comparing members of a family of related molecular materials.",

keywords = "air-stable MOPs, chromium(II) paddlewheel, chromium(II) porous materials, metal-organic polyhedra (MOPs), oxygen adsorption",

author = "Jinhee Park and Zachary Perry and Chen, \{Ying Pin\} and Jaeyeon Bae and Zhou, \{Hong Cai\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = aug,

day = "23",

doi = "10.1021/acsami.7b09339",

language = "English",

volume = "9",

pages = "28064--28068",

journal = "ACS Applied Materials and Interfaces",

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TY - JOUR

T1 - Chromium(II) Metal-Organic Polyhedra as Highly Porous Materials

AU - Park, Jinhee

AU - Perry, Zachary

AU - Chen, Ying Pin

AU - Bae, Jaeyeon

AU - Zhou, Hong Cai

PY - 2017/8/23

Y1 - 2017/8/23

N2 - Herein we report for the first time the synthesis of Cr(II)-based metal-organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr2 units), cage symmetries, and packing motifs enable these materials to achieve Brunauer-Emmett-Teller surface areas of up to 1000 m2/g. Reducing the aggregation of the Cr(II)-based MOPs upon activation makes their pores more accessible than their Cu(II) or Mo(II) counterparts. Further comparisons of surface areas on a molar (m2/mol cage) rather than gravimetric (m2/g) basis is proposed as a rational method of comparing members of a family of related molecular materials.

AB - Herein we report for the first time the synthesis of Cr(II)-based metal-organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr2 units), cage symmetries, and packing motifs enable these materials to achieve Brunauer-Emmett-Teller surface areas of up to 1000 m2/g. Reducing the aggregation of the Cr(II)-based MOPs upon activation makes their pores more accessible than their Cu(II) or Mo(II) counterparts. Further comparisons of surface areas on a molar (m2/mol cage) rather than gravimetric (m2/g) basis is proposed as a rational method of comparing members of a family of related molecular materials.

KW - air-stable MOPs

KW - chromium(II) paddlewheel

KW - chromium(II) porous materials

KW - metal-organic polyhedra (MOPs)

KW - oxygen adsorption

UR - https://www.scopus.com/pages/publications/85028089400

U2 - 10.1021/acsami.7b09339

DO - 10.1021/acsami.7b09339

M3 - Article

C2 - 28741931

AN - SCOPUS:85028089400

SN - 1944-8244

VL - 9

SP - 28064

EP - 28068

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 33

ER -

Chromium(II) Metal-Organic Polyhedra as Highly Porous Materials

Abstract

Bibliographical note

Keywords

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