Journal Article

PUBDB-2023-07441

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Engineering Soluble Diketopyrrolopyrrole Chromophore Stacks from a Series of Pd(II)‐Based Ravels**

Regeni, I.Extern* ; Chowdhury, R. ; Terlinden, K.Extern* ; Horiuchi, S. ; Holstein, J. J.Extern* ; Feldmann, S. ; Clever, G. (Corresponding author)Extern*

2023
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/anie.202308288  doi:10.3204/PUBDB-2023-07441

Abstract: A strategy to engineer the stacking of diketopyrrolopyrrole (DPP) dyes based on non-statistical metallosupramolecular self-assembly is introduced. For this, the DPP backbone is equipped with nitrogen-based donors that allow for different discrete assemblies to be formed upon the addition of Pd(II), distinguished by the number of π-stacked chromophores. A Pd$_3$L$_6$ three-ring, a heteroleptic Pd$_2$L$_2$L′$_2$ ravel composed of two crossing DPPs (flanked by two carbazoles), and two unprecedented self-penetrated motifs (a Pd$_2$L$_3$ triple and a Pd$_2$L$_4$ quadruple stack), were obtained and systematically investigated. With increasing counts of stacked chromophores, UV/Vis absorptions red-shift and emission intensities decrease, except for compound Pd$_2$L$_2$L′$_2$, which stands out with an exceptional photoluminescence quantum yield of 51 %. This is extraordinary for open-shell metal containing assemblies and explainable by an intra-assembly FRET process. The modular design and synthesis of soluble multi-chromophore building blocks offers the potential for the preparation of nanodevices and materials with applications in sensing, photo-redox catalysis and optics.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. DFG project 390677874 - EXC 2033: RESOLV (Ruhr Explores Solvation) (390677874) (390677874)

Experiment(s):

1. PETRA Beamline P11 (PETRA III)

Appears in the scientific report 2023

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Database coverage:
; ; ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; Index Chemicus ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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