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  1. Article ; Online: Correction to "The Energy Gap Law at Work: Emission Yield and Rate Fluctuations of Single NIR Emitters".

    Erker, Christian / Basché, Thomas

    Journal of the American Chemical Society

    2023  Volume 145, Issue 16, Page(s) 9365

    Language English
    Publishing date 2023-04-11
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.3c03084
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The Energy Gap Law at Work: Emission Yield and Rate Fluctuations of Single NIR Emitters.

    Erker, Christian / Basché, Thomas

    Journal of the American Chemical Society

    2022  Volume 144, Issue 31, Page(s) 14053–14056

    Abstract: Internal conversion (IC) often is the dominating relaxation pathway in NIR emitters, lowering their fluorescence quantum yield. Here, we investigate dibenzoterrylene (DBT) by bulk and single molecule spectroscopy. With increasing solvent polarity, the ... ...

    Abstract Internal conversion (IC) often is the dominating relaxation pathway in NIR emitters, lowering their fluorescence quantum yield. Here, we investigate dibenzoterrylene (DBT) by bulk and single molecule spectroscopy. With increasing solvent polarity, the S
    MeSH term(s) Fluorescence ; Hydrocarbons, Aromatic ; Solvents/chemistry
    Chemical Substances Hydrocarbons, Aromatic ; Solvents
    Language English
    Publishing date 2022-07-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.2c07188
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  3. Article: The Energy Gap Law at Work: Emission Yield and Rate Fluctuations of Single NIR Emitters

    Erker, Christian / Basché, Thomas

    Journal of the American Chemical Society. 2022 July 29, v. 144, no. 31

    2022  

    Abstract: Internal conversion (IC) often is the dominating relaxation pathway in NIR emitters, lowering their fluorescence quantum yield. Here, we investigate dibenzoterrylene (DBT) by bulk and single molecule spectroscopy. With increasing solvent polarity, the S₁– ...

    Abstract Internal conversion (IC) often is the dominating relaxation pathway in NIR emitters, lowering their fluorescence quantum yield. Here, we investigate dibenzoterrylene (DBT) by bulk and single molecule spectroscopy. With increasing solvent polarity, the S₁–S₀ energy gap decreases leading to a decrease of the fluorescence quantum yield and an increase of the IC rate in full accordance with the energy gap law. Making use of the unexpectedly strong fluorescence solvatochromism of this aromatic hydrocarbon, the validity of the energy gap law could also be demonstrated at the single molecule level. The S₁–S₀ energy gap not only controls the fluorescence lifetime and quantum yield of single molecules but also dictates how these quantities develop during spectral fluctuations. Our results open new avenues into unexplored single molecule photophysics and appear as a promising tool for nanoscale probing of dynamic heterogeneities.
    Keywords energy ; fluorescence ; solvents ; spectroscopy
    Language English
    Dates of publication 2022-0729
    Size p. 14053-14056.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.2c07188
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  4. Article ; Online: 2,2'-Bithiophene as sensor tag for ligand-protein binding assays based on Förster resonance energy transfer.

    Behnam, Mira A M / Basché, Thomas / Klein, Christian D P

    Analytical biochemistry

    2023  Volume 682, Page(s) 115335

    Abstract: Ligand-protein binding assays based on intrinsic protein fluorescence are straightforward, inexpensive methods to study ligand-protein interactions. However, their applicability is limited to ligands that can interfere with protein emission. In this Note, ...

    Abstract Ligand-protein binding assays based on intrinsic protein fluorescence are straightforward, inexpensive methods to study ligand-protein interactions. However, their applicability is limited to ligands that can interfere with protein emission. In this Note, we describe the applicability of 2,2'-bithiophene as a FRET-based sensor tag, that can be incorporated into high-affinity ligands to generate target-specific compounds able to quench protein fluorescence upon binding. The generated ligands were assessed in different assay designs. Considerations to account for possible sources of interference with the assay readout are addressed, besides interpretation of the obtained results.
    MeSH term(s) Fluorescence Resonance Energy Transfer/methods ; Protein Binding ; Ligands ; Proteins
    Chemical Substances Ligands ; Proteins
    Language English
    Publishing date 2023-09-29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1110-1
    ISSN 1096-0309 ; 0003-2697
    ISSN (online) 1096-0309
    ISSN 0003-2697
    DOI 10.1016/j.ab.2023.115335
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 389: Show issues Location:
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  5. Book ; Thesis: Experimentelle und klinische Untersuchungen zum Nachweis arterieller und venöser Thrombosen durch radioaktiv markierte Thrombozyten mittels CdTe-Halbleiterdetektoren und Szintillationskamera

    Basche, Thomas / Endert, Helga

    1997  

    Author's details vorgelegt von Thomas Basche und Helga Endert
    Language German
    Size 173 Bl. : Ill., graph. Darst.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Jena, Univ., Diss., 1997
    HBZ-ID HT008385569
    Database Catalogue ZB MED Medicine, Health

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  6. Article ; Online: Photothermal contrast reaches single-molecule sensitivity.

    Basché, Thomas

    Angewandte Chemie (International ed. in English)

    2011  Volume 50, Issue 16, Page(s) 3602–3604

    Language English
    Publishing date 2011-04-11
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.201100401
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  7. Article ; Online: Self-Healing Ability of Perovskites Observed via Photoluminescence Response on Nanoscale Local Forces and Mechanical Damage.

    Galle, Marco H J J / Li, Jun / Frantsuzov, Pavel A / Basché, Thomas / Scheblykin, Ivan G

    Advanced science (Weinheim, Baden-Wurttemberg, Germany)

    2022  , Page(s) e2204393

    Abstract: The photoluminescence (PL) of metal halide perovskites can recover after light or current-induced degradation. This self-healing ability is tested by acting mechanically on ... ...

    Abstract The photoluminescence (PL) of metal halide perovskites can recover after light or current-induced degradation. This self-healing ability is tested by acting mechanically on MAPbI
    Language English
    Publishing date 2022-12-01
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2808093-2
    ISSN 2198-3844 ; 2198-3844
    ISSN (online) 2198-3844
    ISSN 2198-3844
    DOI 10.1002/advs.202204393
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  8. Article ; Online: A competition smFRET assay to study ligand-induced conformational changes of the dengue virus protease.

    Maus, Hannah / Hinze, Gerald / Hammerschmidt, Stefan Josef / Basché, Thomas / Schirmeister, Tanja

    Protein science : a publication of the Protein Society

    2022  Volume 32, Issue 1, Page(s) e4526

    Abstract: Ligand binding to proteins often is accompanied by conformational transitions. Here, we describe a competition assay based on single molecule Förster resonance energy transfer (smFRET) to investigate the ligand-induced conformational changes of the ... ...

    Abstract Ligand binding to proteins often is accompanied by conformational transitions. Here, we describe a competition assay based on single molecule Förster resonance energy transfer (smFRET) to investigate the ligand-induced conformational changes of the dengue virus (DENV) NS2B-NS3 protease, which can adopt at least two different conformations. First, a competitive ligand was used to stabilize the closed conformation of the protease. Subsequent addition of the allosteric inhibitor reduced the fraction of the closed conformation and simultaneously increased the fraction of the open conformation, demonstrating that the allosteric inhibitor stabilizes the open conformation. In addition, the proportions of open and closed conformations at different concentrations of the allosteric inhibitor were used to determine its binding affinity to the protease. The K
    MeSH term(s) Dengue Virus/metabolism ; Peptide Hydrolases/metabolism ; Ligands ; Fluorescence Resonance Energy Transfer ; Viral Nonstructural Proteins/chemistry ; Antiviral Agents/chemistry
    Chemical Substances Peptide Hydrolases (EC 3.4.-) ; Ligands ; Viral Nonstructural Proteins ; Antiviral Agents
    Language English
    Publishing date 2022-12-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1106283-6
    ISSN 1469-896X ; 0961-8368
    ISSN (online) 1469-896X
    ISSN 0961-8368
    DOI 10.1002/pro.4526
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3407: Show issues Location:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
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    Zs.MO 1: Show issues

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  9. Article ; Online: Photostable NIR-II Pigments from Extended Rylenecarboximides.

    Wu, Ze-Hua / Reichert, Hans / Reichelt, Helmut / Basché, Thomas / Müllen, Klaus

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2022  Volume 28, Issue 62, Page(s) e202202291

    Abstract: A series of near-infrared (NIR) organic absorbers, named FNs and FPs, have been obtained with absorption maxima from 870 nm to 1100 nm and thus falling into the attractive second near-infrared region (NIR-II). The synthesis of their extended aromatic ... ...

    Abstract A series of near-infrared (NIR) organic absorbers, named FNs and FPs, have been obtained with absorption maxima from 870 nm to 1100 nm and thus falling into the attractive second near-infrared region (NIR-II). The synthesis of their extended aromatic cores utilized an initial aryl-amination between 4-aminonaphthalene-1,8-dicarboximide (NMI-NH
    Language English
    Publishing date 2022-08-29
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202202291
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  10. Article ; Online: High-Performance Near-Infrared Chlorinated Rylenecarboximide Fluorophores via Consecutive C-N and C-C Bond Formation.

    Wu, Ze-Hua / Skabeev, Artem / Zagranyarski, Yulian / Duan, Ruomeng / Jin, Jun-O / Kwak, Minseok / Basché, Thomas / Müllen, Klaus / Li, Chen

    Angewandte Chemie (International ed. in English)

    2023  Volume 62, Issue 52, Page(s) e202315156

    Abstract: A new class of near-infrared (NIR) fluorophores, PAI, is obtained by consecutive C-N/C-C bond formation between diphenylamines and 9,10-dibromoperylenecarboximide. Owing to the rigid structure, extended π-conjugation and pronounced push-pull substitution, ...

    Abstract A new class of near-infrared (NIR) fluorophores, PAI, is obtained by consecutive C-N/C-C bond formation between diphenylamines and 9,10-dibromoperylenecarboximide. Owing to the rigid structure, extended π-conjugation and pronounced push-pull substitution, these fluorophores show emission maxima up to 804 nm and large Stokes shifts. The extraordinarily high fluorescence quantum yields from 47 % to 70 % are attributed to chloro substitution in the bay positions of the perylene core. These characteristics, together with high photostability, qualify them as useful NIR emitters for applications as biomarkers and security inks.
    Language English
    Publishing date 2023-11-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202315156
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