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Showing 1 to 12 of 82 entries
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Oriented Two-Dimensional Porous Organic Cage Crystals.

Angewandte Chemie (International ed. in English)

Jiang S, Song Q, Massey A, Chong SY, Chen L, Sun S, Hasell T, Raval R, Sivaniah E, Cheetham AK, Cooper AI.
PMID: 28580700
Angew Chem Int Ed Engl. 2017 Aug 01;56(32):9391-9395. doi: 10.1002/anie.201704579. Epub 2017 Jul 06.

The formation of two-dimensional (2D) oriented porous organic cage crystals (consisting of imine-based tetrahedral molecules) on various substrates (such as silicon wafers and glass) by solution-processing is reported. Insight into the crystallinity, preferred orientation, and cage crystal growth was...

Reticular synthesis of porous molecular 1D nanotubes and 3D networks.

Nature chemistry

Slater AG, Little MA, Pulido A, Chong SY, Holden D, Chen L, Morgan C, Wu X, Cheng G, Clowes R, Briggs ME, Hasell T, Jelfs KE, Day GM, Cooper AI.
PMID: 27995921
Nat Chem. 2017 Jan;9(1):17-25. doi: 10.1038/nchem.2663. Epub 2016 Nov 21.

Synthetic control over pore size and pore connectivity is the crowning achievement for porous metal-organic frameworks (MOFs). The same level of control has not been achieved for molecular crystals, which are not defined by strong, directional intermolecular coordination bonds....

Controlling the crystallization of porous organic cages: molecular analogs of isoreticular frameworks using shape-specific directing solvents.

Journal of the American Chemical Society

Hasell T, Culshaw JL, Chong SY, Schmidtmann M, Little MA, Jelfs KE, Pyzer-Knapp EO, Shepherd H, Adams DJ, Day GM, Cooper AI.
PMID: 24410310
J Am Chem Soc. 2014 Jan 29;136(4):1438-48. doi: 10.1021/ja409594s. Epub 2014 Jan 21.

Small structural changes in organic molecules can have a large influence on solid-state crystal packing, and this often thwarts attempts to produce isostructural series of crystalline solids. For metal-organic frameworks and covalent organic frameworks, this has been addressed by...

Swellable, water- and acid-tolerant polymer sponges for chemoselective carbon dioxide capture.

Journal of the American Chemical Society

Woodward RT, Stevens LA, Dawson R, Vijayaraghavan M, Hasell T, Silverwood IP, Ewing AV, Ratvijitvech T, Exley JD, Chong SY, Blanc F, Adams DJ, Kazarian SG, Snape CE, Drage TC, Cooper AI.
PMID: 24874971
J Am Chem Soc. 2014 Jun 25;136(25):9028-35. doi: 10.1021/ja5031968. Epub 2014 Jun 11.

To impact carbon emissions, new materials for carbon capture must be inexpensive, robust, and able to adsorb CO2 specifically from a mixture of other gases. In particular, materials must be tolerant to the water vapor and to the acidic...

Periphery-Functionalized Porous Organic Cages.

Chemistry (Weinheim an der Bergstrasse, Germany)

Reiss PS, Little MA, Santolini V, Chong SY, Hasell T, Jelfs KE, Briggs ME, Cooper AI.
PMID: 27709721
Chemistry. 2016 Nov 07;22(46):16547-16553. doi: 10.1002/chem.201603593. Epub 2016 Oct 06.

By synthesizing derivatives of a trans-1,2-diaminocyclohexane precursor, three new functionalized porous organic cages were prepared with different chemical functionalities on the cage periphery. The introduction of twelve methyl groups (CC16) resulted in frustration of the cage packing mode, which...

Inside information on xenon adsorption in porous organic cages by NMR.

Chemical science

Komulainen S, Roukala J, Zhivonitko VV, Javed MA, Chen L, Holden D, Hasell T, Cooper A, Lantto P, Telkki VV.
PMID: 28989612
Chem Sci. 2017 Aug 01;8(8):5721-5727. doi: 10.1039/c7sc01990d. Epub 2017 Jun 14.

A solid porous molecular crystal formed from an organic cage, CC3, has unprecedented performance for the separation of rare gases. Here, xenon was used as an internal reporter providing extraordinarily versatile information about the gas adsorption phenomena in the...

NMR analog of the quantum disentanglement eraser.

Physical review letters

Teklemariam G, Fortunato EM, Pravia MA, Havel TF, Cory DG.
PMID: 11415376
Phys Rev Lett. 2001 Jun 25;86(26):5845-9. doi: 10.1103/PhysRevLett.86.5845.

We report the implementation of a three-spin quantum disentanglement eraser on a liquid-state NMR quantum information processor. A key feature of this experiment was its use of pulsed magnetic field gradients to mimic projective measurements. This ability is an...

Quantum process tomography of the quantum Fourier transform.

The Journal of chemical physics

Weinstein YS, Havel TF, Emerson J, Boulant N, Saraceno M, Lloyd S, Cory DG.
PMID: 15446906
J Chem Phys. 2004 Oct 01;121(13):6117-33. doi: 10.1063/1.1785151.

The results of quantum process tomography on a three-qubit nuclear magnetic resonance quantum information processor are presented and shown to be consistent with a detailed model of the system-plus-apparatus used for the experiments. The quantum operation studied was the...

Porous organic cages.

Nature materials

Tozawa T, Jones JT, Swamy SI, Jiang S, Adams DJ, Shakespeare S, Clowes R, Bradshaw D, Hasell T, Chong SY, Tang C, Thompson S, Parker J, Trewin A, Bacsa J, Slawin AM, Steiner A, Cooper AI.
PMID: 19855385
Nat Mater. 2009 Dec;8(12):973-8. doi: 10.1038/nmat2545. Epub 2009 Oct 25.

Porous materials are important in a wide range of applications including molecular separations and catalysis. We demonstrate that covalently bonded organic cages can assemble into crystalline microporous materials. The porosity is prefabricated and intrinsic to the molecular cage structure,...

Core-Shell Crystals of Porous Organic Cages.

Angewandte Chemie (International ed. in English)

Jiang S, Du Y, Marcello M, Corcoran EW, Calabro DC, Chong SY, Chen L, Clowes R, Hasell T, Cooper AI.
PMID: 29888555
Angew Chem Int Ed Engl. 2018 Aug 27;57(35):11228-11232. doi: 10.1002/anie.201803244. Epub 2018 Jun 10.

The first examples of core-shell porous molecular crystals are described. The physical properties of the core-shell crystals, such as surface hydrophobicity, CO

Molecular dynamics simulations of gas selectivity in amorphous porous molecular solids.

Journal of the American Chemical Society

Jiang S, Jelfs KE, Holden D, Hasell T, Chong SY, Haranczyk M, Trewin A, Cooper AI.
PMID: 24156758
J Am Chem Soc. 2013 Nov 27;135(47):17818-30. doi: 10.1021/ja407374k. Epub 2013 Nov 14.

Some organic cage molecules have structures with protected, internal pore volume that cannot be in-filled, irrespective of the solid-state packing mode: that is, they are intrinsically porous. Amorphous packings can give higher pore volumes than crystalline packings for these...

Synthesis of chiral 1,2-diamines by asymmetric lithiation-substitution.

Organic letters

Coldham I, Copley RC, Haxell TF, Howard S.
PMID: 11700142
Org Lett. 2001 Nov 15;3(23):3799-801. doi: 10.1021/ol016818m.

[reaction--see text] The imidazolidine (tetrahydroimidazole) 2, prepared in one step from N-iso-propylethylenediamine, was subjected to asymmetric lithiation and substitution using sec-butyllithium, (-)-sparteine and a range of electrophiles. Substituted imidazolidines were formed with high optical purity and could be hydrolyzed...

Showing 1 to 12 of 82 entries