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Showing 1 to 12 of 723 entries
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Twinned Growth of Metal-Free, Triazine-Based Photocatalyst Films as Mixed-Dimensional (2D/3D) van der Waals Heterostructures.

Advanced materials (Deerfield Beach, Fla.)

Schwarz D, Noda Y, Klouda J, Schwarzová-Pecková K, Tarábek J, Rybáček J, Janoušek J, Simon F, Opanasenko MV, Čejka J, Acharjya A, Schmidt J, Selve S, Reiter-Scherer V, Severin N, Rabe JP, Ecorchard P, He J, Polozij M, Nachtigall P, Bojdys MJ.
PMID: 28859235
Adv Mater. 2017 Oct;29(40). doi: 10.1002/adma.201703399. Epub 2017 Aug 31.

Design and synthesis of ordered, metal-free layered materials is intrinsically difficult due to the limitations of vapor deposition processes that are used in their making. Mixed-dimensional (2D/3D) metal-free van der Waals (vdW) heterostructures based on triazine (C

A four-component organogel based on orthogonal chemical interactions.

Chemical communications (Cambridge, England)

Luisier N, Schenk K, Severin K.
PMID: 25052504
Chem Commun (Camb). 2014 Sep 14;50(71):10233-6. doi: 10.1039/c4cc03398a.

A thermoresponsive organogel was obtained by orthogonal assembly of four compounds using dynamic covalent boronate ester and imine bonds, as well as dative boron-nitrogen bonds. It is shown that the gel state can be disrupted or reinforced by chemicals...

WE-C-217BCD-04: Multimodality Imaging of Breast Cancer Experimental Lung Metastasis.

Medical physics

Zhang Y, Hong H, Yang Y, Severin G, Engle J, Niu G, Chen X, Leigh B, Barnhart T, Cai W.
PMID: 28519986
Med Phys. 2012 Jun;39(6):3950. doi: 10.1118/1.4736120.

PURPOSE: Metastatic breast cancer (MBC) is incurable. The clinical gold standard for assessing tumor microvessel density (MVD), an independent prognostic marker in MBC, is CD 105 staining. The goal of this study is to develop a positron emission tomography...

Regulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis.

Angewandte Chemie (International ed. in English)

Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST.
PMID: 26349630
Angew Chem Int Ed Engl. 2015 Oct 19;54(43):12772-6. doi: 10.1002/anie.201506793. Epub 2015 Sep 09.

Chirality-assisted synthesis (CAS) is a general approach to control the shapes of large molecular strips. CAS is based on enantiomerically pure building blocks that are designed to strictly couple in a single geometric orientation. Fully shape-persistent structures can thus...

Enhanced Hole Extraction in Perovskite Solar Cells Through Carbon Nanotubes.

The journal of physical chemistry letters

Habisreutinger SN, Leijtens T, Eperon GE, Stranks SD, Nicholas RJ, Snaith HJ.
PMID: 26278955
J Phys Chem Lett. 2014 Dec 04;5(23):4207-12. doi: 10.1021/jz5021795. Epub 2014 Nov 20.

Here, we report the use of polymer-wrapped carbon nanotubes as a means to enhance charge extraction through undoped spiro-OMeTAD. With this approach a good solar cell performance is achieved without the implementation of conventional doping methods. We demonstrate that...

Hydrophobic Organic Hole Transporters for Improved Moisture Resistance in Metal Halide Perovskite Solar Cells.

ACS applied materials & interfaces

Leijtens T, Giovenzana T, Habisreutinger SN, Tinkham JS, Noel NK, Kamino BA, Sadoughi G, Sellinger A, Snaith HJ.
PMID: 26859777
ACS Appl Mater Interfaces. 2016 Mar 09;8(9):5981-9. doi: 10.1021/acsami.5b10093. Epub 2016 Feb 23.

Solar cells based on organic-inorganic perovskite semiconductor materials have recently made rapid improvements in performance, with the best cells performing at over 20% efficiency. With such rapid progress, questions such as cost and solar cell stability are becoming increasingly...

The Importance of Moisture in Hybrid Lead Halide Perovskite Thin Film Fabrication.

ACS nano

Eperon GE, Habisreutinger SN, Leijtens T, Bruijnaers BJ, van Franeker JJ, deQuilettes DW, Pathak S, Sutton RJ, Grancini G, Ginger DS, Janssen RA, Petrozza A, Snaith HJ.
PMID: 26247197
ACS Nano. 2015 Sep 22;9(9):9380-93. doi: 10.1021/acsnano.5b03626. Epub 2015 Aug 06.

Moisture, in the form of ambient humidity, has a significant impact on methylammonium lead halide perovskite films. In particular, due to the hygroscopic nature of the methylammonium component, moisture plays a significant role during film formation. This issue has...

Contraceptives Can Unite Us.

World health & population

Ehlers S, Rucks J, Severin D.
PMID: 28332974
World Health Popul. 2016;17(1):26-30. doi: 10.12927/whp.2016.25039.

Dyer et al.'s (2016) analysis offers key insights into religious conservatives' perceptions of family planning. It also provides the basis for a messaging platform which could help grow support for sexual and reproductive health programming in a highly politicized...

Molecularly Defined Nanostructures Based on a Novel AAA-DDD Triple Hydrogen-Bonding Motif.

Angewandte Chemie (International ed. in English)

Papmeyer M, Vuilleumier CA, Pavan GM, Zhurov KO, Severin K.
PMID: 26695538
Angew Chem Int Ed Engl. 2016 Jan 26;55(5):1685-9. doi: 10.1002/anie.201510423. Epub 2015 Dec 22.

A facile and flexible method for the synthesis of a new AAA-DDD triple hydrogen-bonding motif is described. Polytopic supramolecular building blocks with precisely oriented AAA and DDD groups are thus accessible in few steps. These building blocks were used...

Hot Stones or Cold Soup? New Investigations on the Endogenous Origin of Organic Compounds on Earth.

Angewandte Chemie (International ed. in English)

Severin K.
PMID: 11091407
Angew Chem Int Ed Engl. 2000 Oct 16;39(20):3589-3590. doi: 10.1002/1521-3773(20001016)39:20<3589::aid-anie3589>3.0.co;2-6.

No abstract available.

Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons.

Journal of the American Chemical Society

Samorí P, Severin N, Simpson CD, Müllen K, Rabe JP.
PMID: 12167040
J Am Chem Soc. 2002 Aug 14;124(32):9454-7. doi: 10.1021/ja020323q.

Large polycyclic aromatic hydrocarbons (PAHs) can be considered as nanographenes, whose electron donating or accepting properties are controlled by their size and shape as well as functionalities in their periphery. Epitaxial thin films of them are targets for optoelectronic...

A ruthenium porphyrin catalyst immobilized in a highly cross-linked polymer.

Organic letters

Nestler O, Severin K.
PMID: 11720566
Org Lett. 2001 Nov 29;3(24):3907-9. doi: 10.1021/ol016754f.

An immobilized Ru(meso-tetraarylporphyrin) complex was shown to be a very efficient catalyst for the epoxidation of olefins. In the presence of HBr, alcohols and even alkanes could be converted to the corresponding ketones. For the latter reactions the polymeric...

Showing 1 to 12 of 723 entries