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A Reversible Crystallinity-Preserving Phase Transition in Metal-Organic Frameworks: Discovery, Mechanistic Studies, and Potential Applications.

A quenching-triggered reversible single-crystal-to-single-crystal (SC-SC) phase transition was discovered in a metal-organic framework (MOF) PCN-526. During the phase transition, the one-dimensional channel of PCN-526 distorts from square to rectangular in shape while maintaining single crystallinit... Full description

Journal Title: Journal of the American Chemical Society June 24, 2015, Vol.137(24), pp.7740-7746
Main Author: Liu, Dahuan
Other Authors: Liu, Tian-Fu , Chen, Ying-Pin , Zou, Lanfang , Feng, Dawei , Wang, Kecheng , Zhang, Qiang , Yuan, Shuai , Zhong, Chongli , Zhou, Hong-Cai
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1520-5126 ; DOI: 1520-5126 ; DOI: 10.1021/jacs.5b02999
Link: http://search.proquest.com/docview/1691292413/?pq-origsite=primo
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title: A Reversible Crystallinity-Preserving Phase Transition in Metal-Organic Frameworks: Discovery, Mechanistic Studies, and Potential Applications.
format: Article
creator:
  • Liu, Dahuan
  • Liu, Tian-Fu
  • Chen, Ying-Pin
  • Zou, Lanfang
  • Feng, Dawei
  • Wang, Kecheng
  • Zhang, Qiang
  • Yuan, Shuai
  • Zhong, Chongli
  • Zhou, Hong-Cai
subjects:
  • Chemistry
ispartof: Journal of the American Chemical Society, June 24, 2015, Vol.137(24), pp.7740-7746
description: A quenching-triggered reversible single-crystal-to-single-crystal (SC-SC) phase transition was discovered in a metal-organic framework (MOF) PCN-526. During the phase transition, the one-dimensional channel of PCN-526 distorts from square to rectangular in shape while maintaining single crystallinity. Although SC-SC transformations have been frequently observed in MOFs, most reports have focused on describing the resulting structural alterations without shedding light on the mechanism for the transformation. Interestingly, modifying the occupancy or species of metal ions in the extra-framework sites, which provides mechanistic insight into the causes for the transformation, can forbid this phase transition. Moreover, as a host scaffold, PCN-526 presents a platform for modulation of the photoluminescence properties by encapsulation of luminescent guest molecules. Through judicious choice of these guest molecules, responsive luminescence caused by SC-SC transformations can be detected, introducing a new strategy for the design of novel luminescent MOF materials.
language: eng
source:
identifier: E-ISSN: 1520-5126 ; DOI: 1520-5126 ; DOI: 10.1021/jacs.5b02999
fulltext: no_fulltext
issn:
  • 15205126
  • 1520-5126
url: Link


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descriptionA quenching-triggered reversible single-crystal-to-single-crystal (SC-SC) phase transition was discovered in a metal-organic framework (MOF) PCN-526. During the phase transition, the one-dimensional channel of PCN-526 distorts from square to rectangular in shape while maintaining single crystallinity. Although SC-SC transformations have been frequently observed in MOFs, most reports have focused on describing the resulting structural alterations without shedding light on the mechanism for the transformation. Interestingly, modifying the occupancy or species of metal ions in the extra-framework sites, which provides mechanistic insight into the causes for the transformation, can forbid this phase transition. Moreover, as a host scaffold, PCN-526 presents a platform for modulation of the photoluminescence properties by encapsulation of luminescent guest molecules. Through judicious choice of these guest molecules, responsive luminescence caused by SC-SC transformations can be detected, introducing a new strategy for the design of novel luminescent MOF materials.
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