Characterization of microstructures and reaction mechanisms of Tröger's base polymers of intrinsic microporosity

2020 ◽  
Vol 34 (S2) ◽  
Author(s):  
Anthony P. Gies ◽  
Robert E. Hefner ◽  
Nathan J. Rau ◽  
Sukrit Mukhopadhyay ◽  
Jeremy Chris P. Reyes ◽  
...  
Keyword(s):  
Reaction Mechanisms ◽  
Troger's Base ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

scholarly journals Synthesis and characterization of composite membranes made of graphene and polymers of intrinsic microporosity

Carbon ◽  
2016 ◽  
Vol 102 ◽  
pp. 357-366 ◽  
Author(s):  
Yuyoung Shin ◽  
Eric Prestat ◽  
Kai-Ge Zhou ◽  
Patricia Gorgojo ◽  
Khalid Althumayri ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Synthesis And Characterization ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

Nanofiltration membranes from crosslinked Troger's base Polymers of Intrinsic Microporosity (PIMs)

2020 ◽  
Vol 595 ◽  
pp. 117501 ◽  
Author(s):  
Praveen Agarwal ◽  
Robert E. Hefner ◽  
Shouren Ge ◽  
Ian Tomlinson ◽  
YuanQiao Rao ◽  
...  
Keyword(s):  
Nanofiltration Membranes ◽  
Troger's Base ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

scholarly journals Effect of Bridgehead Methyl Substituents on the Gas Permeability of Tröger’s-Base Derived Polymers of Intrinsic Microporosity

Membranes ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 62 ◽  
Author(s):  
Richard Malpass-Evans ◽  
Ian Rose ◽  
Alessio Fuoco ◽  
Paola Bernardo ◽  
Gabriele Clarizia ◽  
...  
Keyword(s):  
Gas Permeability ◽  
Time Lag ◽  
Composite Membranes ◽  
Detailed Comparison ◽  
Gas Diffusion ◽  
Size Selectivity ◽  
Surface Areas ◽  
Troger's Base ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

A detailed comparison of the gas permeability of four Polymers of Intrinsic Microporosity containing Tröger’s base (TB-PIMs) is reported. In particular, we present the results of a systematic study of the differences between four related polymers, highlighting the importance of the role of methyl groups positioned at the bridgehead of ethanoanthracene (EA) and triptycene (Trip) components. The PIMs show BET surface areas between 845–1028 m2 g−1 and complete solubility in chloroform, which allowed for the casting of robust films that provided excellent permselectivities for O2/N2, CO2/N2, CO2/CH4 and H2/CH4 gas pairs so that some data surpass the 2008 Robeson upper bounds. Their interesting gas transport properties were mostly ascribed to a combination of high permeability and very strong size-selectivity of the polymers. Time lag measurements and determination of the gas diffusion coefficient of all polymers revealed that physical ageing strongly increased the size-selectivity, making them suitable for the preparation of thin film composite membranes.

scholarly journals Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 132 ◽  
Author(s):  
Elsa Lasseuguette ◽  
Richard Malpass-Evans ◽  
Mariolino Carta ◽  
Neil B. McKeown ◽  
Maria-Chiara Ferrari
Keyword(s):  
Gas Permeation ◽  
High Permeability ◽  
Permeability Coefficients ◽  
Troger's Base ◽  
Base Polymer ◽  
Temperature And Pressure ◽  
Solubility Coefficients ◽  
Polymers Of Intrinsic Microporosity ◽  
Increasing Temperature ◽  
Intrinsic Microporosity

Gas transport properties of PIM-EA(H2)-TB, a microporous Tröger’s base polymer, were systematically studied over a range of pressure and temperature. Permeability coefficients of pure CO2, N2, CH4 and H2 were determined for upstream pressures up to 20 bar and temperatures up to 200 °C. PIM-EA(H2)-TB exhibited high permeability coefficients in absence of plasticization phenomena. The permeability coefficient of N2, CH4 and H2 increased with increasing temperature while CO2 permeability decreased with increasing temperature as expected for a glassy polymer. The diffusion and solubility coefficients were also analysed individually and compared with other polymers of intrinsic microporosity. From these results, the activation energies of permeation, diffusion and sorption enthalpies were calculated using an Arrhenius equation.

Synthesis and characterization of metalorganic polymers of intrinsic microporosity based on iron(II) clathrochelate

Polymer ◽  
2017 ◽  
Vol 122 ◽  
pp. 200-207 ◽  
Author(s):  
Bassam Alameddine ◽  
Suchetha Shetty ◽  
Noorullah Baig ◽  
Saleh Al-Mousawi ◽  
Fakhreia Al-Sagheer
Keyword(s):  
Synthesis And Characterization ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

scholarly journals Polymers of Intrinsic Microporosity derived from a carbocyclic analogue of Tröger's base

Polymer ◽  
2017 ◽  
Vol 126 ◽  
pp. 324-329 ◽  
Author(s):  
Mariolino Carta ◽  
C. Grazia Bezzu ◽  
James Vile ◽  
Benson M. Kariuki ◽  
Neil B. McKeown
Keyword(s):  
Troger's Base ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

scholarly journals Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity

Membranes ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 214-227 ◽  
Author(s):  
Muntazim Khan ◽  
Volkan Filiz ◽  
Thomas Emmler ◽  
Volker Abetz ◽  
Toenjes Koschine ◽  
...  
Keyword(s):  
Free Volume ◽  
Gas Permeation ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

The enhancement of chain rigidity and gas transport performance of polymers of intrinsic microporosity via intramolecular locking of the spiro-carbon

2016 ◽  
Vol 52 (39) ◽  
pp. 6553-6556 ◽  
Author(s):  
Jian Zhang ◽  
Hong Kang ◽  
Jacob Martin ◽  
Shouhai Zhang ◽  
Sylvie Thomas ◽  
...  
Keyword(s):  
Gas Transport ◽  
Membered Ring ◽  
Pivot Point ◽  
Chain Rigidity ◽  
New Strategy ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity

We present a new strategy to improve the rigidity of PIM-1 through the introduction of 8-membered ring locking into the flexible spiro-carbon pivot point to produce a more rigid interlocked polycyclic structure.

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