scholarly journals Adsorption space for microporous polymers with diverse adsorbate species

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dylan M. Anstine ◽  
Dai Tang ◽  
David S. Sholl ◽  
Coray M. Colina

AbstractThe enormous number of combinations of adsorbing molecules and porous materials that exist is known as adsorption space. The adsorption space for microporous polymers has not yet been systematically explored, especially when compared with efforts for crystalline adsorbents. We report molecular simulation data for the adsorptive and structural properties of polymers of intrinsic microporosity with a diverse set of adsorbate species with 345 distinct adsorption isotherms and over 240,000 fresh and swollen structures. These structures and isotherms were obtained using a sorption-relaxation technique that accounts for the critical role of flexibility of the polymeric adsorbents. This enables us to introduce a set of correlations that can estimate adsorbent swelling and fractional free volume dilation as a function of adsorbate uptake based on readily characterized properties. The separation selectivity of the 276 distinct binary molecular pairs in our data is reported and high-performing adsorbent systems are identified.

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 54841-54847 ◽  
Author(s):  
Wen-Jie Fan ◽  
Gui-Juan Yang ◽  
Jian-Wei Chi ◽  
You Yu ◽  
Da-Zhi Tan

By enlarging the size (area) in the linker or adding substituent group in the node, the binding energy between CMPs and adsorbates will increase significantly, which demonstrates the critical role of skeleton structures on binding strength.


BMJ Leader ◽  
2017 ◽  
Vol 1 (4) ◽  
pp. 33-35
Author(s):  
Amit Nigam ◽  
Minjie Gao

While people usually associate leadership with people with formal authority over organisations, front-line doctors play critical leadership roles today. We survey empirical studies in top management journals that speak to the role of front-line doctors in the implementation of service improvement initiatives. Front-line doctors can both drive and block change from within their organisations. In addition, doctors play critical roles in leading across professional groups, coordinating the input and work of different professionals. The leadership roles of front-line doctors can impact whether and how health systems improve and learn and how they perform. Harnessing the productive leadership potential of front-line doctors today is critical to creating a high-performing, sustainable healthcare system.


2008 ◽  
Vol 15 (2) ◽  
pp. 50-59 ◽  
Author(s):  
Amy Philofsky

AbstractRecent prevalence estimates for autism have been alarming as a function of the notable increase. Speech-language pathologists play a critical role in screening, assessment and intervention for children with autism. This article reviews signs that may be indicative of autism at different stages of language development, and discusses the importance of several psychometric properties—sensitivity and specificity—in utilizing screening measures for children with autism. Critical components of assessment for children with autism are reviewed. This article concludes with examples of intervention targets for children with ASD at various levels of language development.


1998 ◽  
Vol 5 (1) ◽  
pp. 115A-115A
Author(s):  
K CHWALISZ ◽  
E WINTERHAGER ◽  
T THIENEL ◽  
R GARFIELD
Keyword(s):  

2018 ◽  
Vol 20 (3) ◽  
pp. 99-110
Author(s):  
Na Zhang ◽  
Jingjing Li ◽  
Xing Bu ◽  
Zhenxing Gong ◽  
Gilal Faheem Gul

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