Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Marcel Dommaschk"'
Autor:
Jens Gröbner, Jannis Ludwig, Lukas Huber, Morten K Peters, Rainer Herges, Marcel Dommaschk, Jan-Bernd Hövener
Publikováno v:
Journal of Porphyrins and Phthalocyanines. 24:480-488
A water-soluble Ni(II)-porphyrin substituted with a covalently attached azopyridine ligand was synthesized. Upon irradiation with violet and green light, the azo unit performs a reversible cis–trans isomerization. This geometry change triggers a co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::208ed8e8e017e3722aa7f260dd6d9e0b
https://doi.org/10.1142/s1088424619501803
https://doi.org/10.1142/s1088424619501803
Publikováno v:
ChemPhysChem. 19:571-574
Increasing the signal-to-noise ratio is one of the major goals in the field of NMR spectroscopy. In this proof of concept, we accelerate relaxation during an NMR pulse sequence using photo-generated paramagnetic states of an inert sensitizer. For the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6002ae60a5f6b0e65b46cb86eb047d44
https://doi.org/10.1002/cphc.201701304
https://doi.org/10.1002/cphc.201701304
Autor:
Christian Riedel, Vanessa Wellm, Marcel Dommaschk, Jens Gröbner, Rainer Herges, Jan-Bernd Hövener
Publikováno v:
Physical chemistry chemical physics : PCCP. 21(44)
Light-responsive contrast agents for magnetic resonance imaging (MRI) based on Ni(ii) porphyrin molecular spin switches have recently been introduced. We present their implementation in water and methanol based gels leading to the first soft material
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d139c950859b714bf44f6ec6a323aa6b
https://pubmed.ncbi.nlm.nih.gov/31686082
https://pubmed.ncbi.nlm.nih.gov/31686082
Publikováno v:
Angewandte Chemie International Edition
We report on a switchable rotaxane molecular shuttle that features a pseudo-meso 2,5-disubstituted pyrrolidine catalytic unit on the axle whose local symmetry is broken according to the position of a threaded benzylic amide macrocycle. The macrocycle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02d947a51d2270ff548fd504a068937e
Publikováno v:
Organic Letters. 18:5228-5231
The synthesis of a borylated Ni2+ porphyrin and its application as a versatile precursor for building up functional ortho-substituted tetraaryl porphyrin architectures is reported. This precursor porphyrin provides the basis for efficient modular syn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::128d5480a4261ca1b02796fe060556d9
https://doi.org/10.1021/acs.orglett.6b02507
https://doi.org/10.1021/acs.orglett.6b02507
Publikováno v:
Chemphyschem : a European journal of chemical physics and physical chemistry. 19(5)
Increasing the signal-to-noise ratio is one of the major goals in the field of NMR spectroscopy. In this proof of concept, we accelerate relaxation during an NMR pulse sequence using photo-generated paramagnetic states of an inert sensitizer. For the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a9cc0c121eb83f6c2fa1eedd153bd389
https://pubmed.ncbi.nlm.nih.gov/29265647
https://pubmed.ncbi.nlm.nih.gov/29265647
Autor:
Sanjay Tiwari, Rainer Herges, Morten K Peters, Christian Schütt, Marcel Dommaschk, Christian Näther, Christian Riedel, Florian Gutzeit, Frank D. Sönnichsen, Susann Boretius
Publikováno v:
Journal of the American Chemical Society. 137:7552-7555
We present a fully reversible and highly efficient on–off photoswitching of magnetic resonance imaging (MRI) contrast with green (500 nm) and violet-blue (435 nm) light. The contrast change is based on intramolecular light-driven coordination-induc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96421f8665f142dca1a4dae84a923b52
https://doi.org/10.1021/jacs.5b00929
https://doi.org/10.1021/jacs.5b00929
Autor:
Stefan Bräse, Lars Heinke, Rainer Herges, Christof Wöll, Murat Cakici, Sylvain Grosjean, Marcel Dommaschk
Publikováno v:
ACS Nano. 8:1463-1467
The remote control of surface properties is one of the key challenges in interfacial systems chemistry. Here, we report the realization of a SURMOF (surface-mounted metal-organic framework)-based hybrid system in which a crucial component can be swit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e275cbb9f6b5d115f5bd19830c2f636
https://doi.org/10.1021/nn405469g
https://doi.org/10.1021/nn405469g
Autor:
Rainer Herges, Umasish Jana, Marcel Dommaschk, Christian Schütt, Sugumar Venkataramani, Christian Näther, Frank D. Sönnichsen
Publikováno v:
Dalton Trans.. 43:17395-17405
Extensive use of quantum chemical calculations has been made to rationally design a molecule whose spin state can be switched reversibly using light of two different wavelengths at room temperature in solution. Spin change is induced by changing the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6547a1f01df7a2b9bc95c15d2de2f877
https://doi.org/10.1039/c4dt03048f
https://doi.org/10.1039/c4dt03048f
Autor:
Christian Schütt, Mark Dittner, Marcel Dommaschk, Julia Bahrenburg, Birthe Kohly, Rainer Herges, Sebastian Megow, Friedrich Temps, Joachim Gripp
Publikováno v:
EPJ Web of Conferences, Vol 205, p 05019 (2019)
Femtosecond time-resolved absorption measurements of a magnetically bi-stable azopyridine Ni-porphyrin in solution at room temperature show that the photo-induced dynamics are dominated by transient low-spin ⇄ high-spin interconversion involving Ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dbfc8fa06993475e7827b0bd83e03a4
https://doi.org/10.1051/epjconf/201920505019
https://doi.org/10.1051/epjconf/201920505019