Cited 7 time in webofscience Cited 7 time in scopus

Maximizing Photoresponsive Efficiency by Isolating Metal-Organic Polyhedra into Confined Nanoscaled Spaces

Title
Maximizing Photoresponsive Efficiency by Isolating Metal-Organic Polyhedra into Confined Nanoscaled Spaces
Authors
Jiang, YaoPark, JinheeTan, PengFeng, LiangLiu, Xiao-QinSun, Lin-BingZhou, Hong-Cai
DGIST Authors
Park, Jinhee
Issue Date
2019-05
Citation
Journal of the American Chemical Society, 141(20), 8221-8227
Type
Article
Article Type
Article
Keywords
MESOPOROUS SILICAGAS-ADSORPTIONCAPTURERELEASEDESIGNSITESCO2SEPARATIONFRAMEWORKSCATALYSIS
ISSN
0002-7863
Abstract
Photoresponsive metal-organic polyhedra (PMOPs) have attracted expanding interests due to their modular nature with tunable functionality and variable responsive behaviors tailored conveniently by external-stimulus. However, their photoresponsive efficiency is often compromised after activation because of desorption-triggered aggregation into bulk PMOPs, which limits their utility in stimuli-responsive applications. Here, we report a case system that can overcome the aggregation problem and achieve maximized photoresponsive efficiency by polyhedral isolation in the nanoscaled spaces of mesoporous silica (MS). Through confinement, amount-controllable PMOPs are well dispersed in the nanoscaled spaces of MS, avoiding aggregation that commonly takes places in bulk PMOPs. Furthermore, reversible trans/cis isomerization of photoresponsive groups can be realized freely during ultraviolet/visible light irradiation, maximizing control over photoresponsive guest adsorption behaviors. Remarkably, after trans/cis isomerization, the confined PMOP-1 shows 48.2% of change in adsorption amount for propene with small molecular size and 43.9% for brilliant blue G (BBG) with large molecular size, which is significantly higher than that over bulk PMOP-1 with 11.2% for propene and 7.8% for BBG, respectively. Therefore, our work paves a way for the design and construction of multifunctional composite materials toward efficient stimuli-responsive needs.
URI
http://hdl.handle.net/20.500.11750/9914
DOI
10.1021/jacs.9b01380
Publisher
American Chemical Society
Related Researcher
  • Author Park, Jinhee Organic-Inorganic Hybrids Lab
  • Research Interests Organic-Inorganic Hybrid Materials; Metal-Organic Polyheda;Metal-Organic Frameworks; Porous Polymer Networks
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceOrganic-Inorganic Hybrids Lab1. Journal Articles


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