Výsledky vyhledávání - "Dennis Chercka"

Pyrene based materials for exceptionally deep blue OLEDs

Autor: Martin Baumgarten, Seung-Jun Yoo, Jang-Joo Kim, Dennis Chercka, Klaus Müllen

Publikováno v: J. Mater. Chem. C. 2:9083-9086

A 2,7-functionalized pyrene-based emitter for highly efficient OLEDs has been developed. The chromophore can be prepared on a large scale in good yields. It offers an exceptional deep blue photoluminescence (CIE: x = 0.16, y = 0.024) and good externa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25048cff605b75dbbe6320132557d4c4
https://doi.org/10.1039/c4tc01801j

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Understanding the Fluorescence of TADF Light-Emitting Dyes

Autor: Martin Baumgarten, Anela Ivanova, Georgi Valchanov, Dennis Chercka, Alia Tadjer

Publikováno v: The journal of physical chemistry. A. 120(35)

In order to afford in a controlled fashion fine-tuning of the color and the intensity of the emitted light of potential fluorophores for organic light-emitting diodes (OLED), directed molecular design based on a donor-spacer-acceptor model is underta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21a6ea4e4431429bbd2e3b72db909bd6
https://pubmed.ncbi.nlm.nih.gov/27529727

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Orbital-Resolved Partial Charge Transfer from the Methoxy Groups of Substituted Pyrenes in Complexes with Tetracyanoquinodimethane—A NEXAFS Study

Autor: Katerina Medjanik, Klaus Müllen, Roser Valentí, Michael Merz, Gerd Schönhense, Sergej A. Nepijko, Martin Baumgarten, Peter Nagel, Stefan Schuppler, Hans-Joachim Elmers, Dennis Chercka, Harald Olaf Jeschke

Publikováno v: Journal of the American Chemical Society. 134:4694-4699

It is demonstrated that the near-edge X-ray absorption fine structure (NEXAFS) provides a powerful local probe of functional groups in novel charge transfer (CT) compounds and their electronic properties. Microcrystals of tetra-/hexamethoxypyrene as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a25f27a583d919ab6ef91da816e8f6b7
https://doi.org/10.1021/ja2100802

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Charge transfer tuning by chemical substitution and uniaxial pressure in the organic complex tetramethoxypyrene-tetracyanoquinodimethane

Autor: Martin Bröring, Martin Baumgarten, Klaus Müllen, Kai Ackermann, Michael Huth, Roser Valentí, Benedikt Wolfram, Milan Tomic, Harald Olaf Jeschke, Dennis Chercka, Michael Bolte, Milan Rudloff

Publikováno v: Physical Chemistry Chemical Physics

In the search for novel organic charge transfer salts with variable degrees of charge transfer we have studied the effects of two modifications of the recently synthesized donor-acceptor system [tetramethoxypyrene (TMP)]-[tetracyanoquinodimethane (TC

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bf9cfb52d1106e4db9ca167d38b6d17
https://hdl.handle.net/11858/00-001M-0000-002A-0455-111858/00-001M-0000-0025-08D5-8

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Electron donors and acceptors based on 2,7-functionalized pyrene-4,5,9,10-tetraone

Autor: Dennis Chercka, Martin Baumgarten, Volker Enkelmann, Shin-ichiro Kawano, Klaus Müllen

Publikováno v: Chemical communications (Cambridge, England). 49(44)

An efficient synthesis of 2,7-dibromo- and diiodo-pyrene(4,5,8,19)-tetraones led to strong donors and acceptors based on pyrene. They are versatile building blocks for conjugated materials and can be further applied in molecular electronics.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d5ee7d81125d92bfadae29b3e8279dd
https://pubmed.ncbi.nlm.nih.gov/23619026

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Tuning the optical absorption of potential blue emitters

Autor: Georgi Valchanov, Anela Ivanova, Martin Baumgarten, Dennis Chercka, Alia Tadjer

Publikováno v: Organic Electronics

The quest for more efficient blue emitters to be applied in organic light-emitting diodes is one of the challenging tasks of contemporary nanotechnologies. An approach to enhance substantially the intrinsic efficiency of luminescent organic molecules

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Charge transfer in the novel donor-acceptor complexes tetra- and hexamethoxypyrene with tetracyanoquinodimethane studied by HAXPES

Autor: Andrei Gloskovskii, Gerd Schönhense, D. Kutnyakhov, Martin Baumgarten, Claudia Felser, Katerina Medjanik, Klaus Müllen, Dennis Chercka

Publikováno v: Journal of electron spectroscopy and related phenomena 185, 77-84 (2012). doi:10.1016/j.elspec.2012.02.002

The effect of charge transfer (CT) in complexes of the donors tetra - and hexamethoxyprene ( TMP and HMP ) with the classical acceptor tetracyanoquinodimethane ( TCNQ ) was studied using hard X-ray photoemission (HAXPES). Microcrystals of the complex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0668a0746052f2ee5ebcbb98a695a4ce
https://bib-pubdb1.desy.de/record/94546

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