Norbert Jux’s research while affiliated with Friedrich-Alexander-University Erlangen-Nürnberg and other places

... Distinguishing features in atomically resolved experiments, such as scanning tunneling microscopy (STM) and scanning transmission electron microscopy (STEM), differ from classifying objects commonly found in publicly available datasets like CIFAR and ImageNet 52,53 . Previous DL networks have been designed and implemented for precise and accurate image analysis of molecular [54][55][56] and atomically resolved data [57][58][59][60][61][62][63] , but typically require high-quality data for precise model predictions. In this work, a network was utilized for image segmentation of nearly identical objects, namely atoms, while also quantifying prediction uncertainty to adapt to images originating from different experimental or simulation setups. ...

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Exploring electron-beam induced modifications of materials with machine-learning assisted high temporal resolution electron microscopy

... Third, their on-surface adsorption pattern is highly tunable-from single molecules to 2D networks-only by altering their chemical side groups [15]. This goes along with their structural and conformational flexibility, which enables the emergence of a wide variety of on-surface supramolecular structures [16][17][18][19][20]. The functionalization of the periphery of the parent macrocycle with various chemical groups (e.g. ...

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Coverage- and temperature-induced self-metalation of tetraphenyltransdibenzoporphyrin on Cu(111)

... 33 Interestingly, these supramolecular complexes not only have enhanced binding constants with fullerenes than their previous counterparts, but they can also showcase photoinduced electron transfer processes between the fullerene and the nanographene units. 34 In this work, we report on the molecular complexation of C 60 and C 70 with a molecular nanographene tweezer (CNG-1) as a suitable host previously obtained by a six-step synthetic process. Furthermore, theoretical calculations using the DFT BLYP exchange−correlation functional, along with the empirical D3(BJ) dispersion correction and def2-SVP basis set, nicely underpin the experimental values, matching the difference in interaction energy with binding constant values. ...

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All-carbon supramolecular complexation of a bilayer molecular nanographene with [60] and [70]fullerenes

... Recently, a tetramer has been synthesized through coordinating pyridyl pentacene-based ligands to Ru(II), and, in this case, the presence of the heavy atom gives rise to ultrafast ISC following photoexcitation rather than SF. 44 Therefore, the influence of HAE on triplet decorrelation in SF remains unpredictable. ...

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Catalyzing Singlet Fission by Transition Metals: Second versus Third Row Effects

... [12,15] Several viable strategies were published in the literature for obtaining fragments of the "graphyrin" structure varying vastly in size, shape, and properties. [16][17][18][19][20][21][22][23][24][25][26] Notably, in 2020, Lungerich, Jux, Drewello, and co-workers reported on bowl-shaped porphyrin-graphene hybrid fragments formed from fluorinated tetraaryltetrabenzoporphyrins in the gas phase through collision-induced dissociation. [27] A solution-processed example of a triply-fused porphyrin-nanographene system was presented by Narita, Müllen, and co-workers in 2018, connecting a tailormade aromatic building block with the porphyrin through manifold oxidative six-ring formation. ...

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Asymmetrically Fused Nanographene‐Porphyrin Architectures

... Third, their on-surface adsorption pattern is highly tunable-from single molecules to 2D networks-only by altering their chemical side groups [15]. This goes along with their structural and conformational flexibility, which enables the emergence of a wide variety of on-surface supramolecular structures [16][17][18][19][20]. The functionalization of the periphery of the parent macrocycle with various chemical groups (e.g. ...

Reference:

Coverage- and temperature-induced self-metalation of tetraphenyltransdibenzoporphyrin on Cu(111)

... Third, their on-surface adsorption pattern is highly tunable-from single molecules to 2D networks-only by altering their chemical side groups [15]. This goes along with their structural and conformational flexibility, which enables the emergence of a wide variety of on-surface supramolecular structures [16][17][18][19][20]. The functionalization of the periphery of the parent macrocycle with various chemical groups (e.g. ...

Reference:

Coverage- and temperature-induced self-metalation of tetraphenyltransdibenzoporphyrin on Cu(111)

... Such functionalization may be by the Fields-Craft reaction. As a result of this reaction, precursors can be obtained that can play an essential role in nanographene synthesis [24]. ...

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The Influence of the Intramolecular 2D Interactions on the Physicochemical Properties of Hexasubstituted Benzene Derivatives

... This leads to the result that when measuring the concentration of BHA in the residual liquid, a part of BHA exists in the solution in the form of Al-BHA complex instead of complex reaction with Fe 3+ to develop color. Therefore, there is an abnormal decrease in the adsorption of BHA in the range of pH 3 to 4. And this also revealed the possible reason for the drop of rutile flotation recovery at pH 3 and 4 in the flotation results, because BHA-was shown to be the main group interacting with BHA and rutile sites (Zhang et al., 2021;Köbl et al., 2022). ...

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Effect of aluminum ion on rutile flotation

... 38 Domino processes avoid intermediate isolation and purification steps and are timesaving, waste-reducing, and atom-efficient and can be considered as a green method superior to stepwise synthetic approaches. [38][39][40] Although recently, we reported access to new aniline derivatives using different domino reactions and one-pot processes ( Fig. 1g-h), 3,[41][42][43] to the best of our knowledge, a domino approach has never been used before to form an aromatic ring, and to install both amine and fluorine groups in a single operation and starting from readily available acyclic compounds. Herein, we report for the first time the straightforward synthesis of synthetically challenging functionalized ortho-fluoroanilines via a metal-free four-step domino reaction starting from readily available acyclic fluoronitrostyrenes and α,α-dicyanoolefine precursors (Fig. 1i). ...

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A domino reaction strategy for facile and modular construction of synthetically challenging functionalized ortho-fluoroanilines