Perylene bisimide J-aggregates with absorption maxima in the NIR

Wang, Hao; Kaiser, Theo E.; Uemura, Shinobu; Würthner, Frank

doi:10.1039/b717407a

Cited by 76 publications

(50 citation statements)

References 29 publications

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“…reported that the NIR azamethine dyes with an absorption maximum at 800 nm became NIR non‐absorbing permanently due to a loss of hydrogen cyanide during thermal treatment 16. Würthner et al found thermochromic perylene bisimide dyes with absorption being switched between 800 nm due to J‐aggregates at lower temperature and 644 nm due to monomeric dyes at higher temperature (90 °C) 17. Yam et.…”

Section: Methodsmentioning

confidence: 99%

Near‐Infrared Thermochromic Diazapentalene Dyes

Qian

Wang

2012

Advanced Materials

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Section: Methodsmentioning

confidence: 99%

Near‐Infrared Thermochromic Diazapentalene Dyes

Qian

Wang

2012

Advanced Materials

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“…In order to fabricate new NIR J‐aggregated materials, rational design is required to realize the head‐to‐tail stacking. One approach is to introduce directed strong noncovalent interactions at specific positions to induce a head‐to‐tail stacking formation . Würthner and co‐workers reported a type of perylene bisimide (PBI)‐based J‐aggregate with absorption maxima in the NIR region ( Figure ).…”

Section: Fabrication Of Supramolecular J‐aggregatesmentioning

confidence: 99%

“…b) UV‐vis (black lines) and fluorescence (red line) spectra of PBI derivative in chloroform (dashed lines) and in methylcyclohexane (solid line). Reproduced with permission . Copyright 2008, Royal Society of Chemistry.…”

Section: Fabrication Of Supramolecular J‐aggregatesmentioning

confidence: 99%

Tuning the Energy Gap by Supramolecular Approaches: Towards Near‐Infrared Organic Assemblies and Materials

Song

Jiao

Wang

et al. 2015

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Near-infrared (NIR) organic materials are of great importance for both fundamental research and practical applications. While much effort has been taken to covalently design and synthesize NIR organic materials with a low energy gap, there are supramolecular approaches for tuning the energy gap to noncovalently fabricate NIR organic assemblies and materials. In this concept article, we summarize and discuss several supramolecular approaches, including the fabrication of charge transfer supramolecular complexes, the fabrication of supramolecular J-aggregates, and the fabrication of supramolecularly stabilized organic radicals. The nature of noncovalent interactions in supramolecular approaches can provide NIR organic assemblies and materials with unique properties such as reversibility, stimuli-responsiveness, recyclability, and adaptive abilities.

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“…Indeed, upon self-assembly of these PBI dyes in MCH the absorption maximum is shifted from 664 to 822 nm, i.e., by 158 nm (2900 cm −1 ). [289] …”

Section: Supramolecular Systems: Perylene Bisimide H-and J-aggregatesmentioning

confidence: 99%

Exciton Transport in Molecular Aggregates – From Natural Antennas to Synthetic Chromophore Systems

Brixner

Hildner

Köhler

et al. 2017

Advanced Energy Materials

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295

301

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The transport of excitation energy in molecular aggregates is of crucial importance for the function of organic optoelectronic devices and next‐generation solar cells. First, this review summarizes the theoretical background of the nature of the electronically excited states of molecular aggregates. For these systems, the electronic interaction between the monomers leads to the formation of exciton states. This goes along with a shift of the excitation energies and a redistribution of the oscillator strength with respect to the monomers. Next, a brief overview is provided over experimental techniques that allow to study the properties of excitons in molecular aggregates. This includes single‐molecule spectroscopy, coherent two‐dimensional (2D) spectroscopy, and single‐molecule coherent spectroscopy. Finally, examples of molecular aggregates spanning the range from natural systems that act in photosynthesis as light‐harvesting antennas to artificial aggregates built from synthetic chromophores are illustrated.

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Perylene bisimide J-aggregates with absorption maxima in the NIR

Abstract: NIR absorbing J-aggregates with biomimetic features of chlorophyll dye assemblies are obtained upon hydrogen-bond directed self-assembly of a green 1,7-diamino-substituted perylene bisimide dye.

Cited by 76 publications

References 29 publications

Near‐Infrared Thermochromic Diazapentalene Dyes

Near‐Infrared Thermochromic Diazapentalene Dyes

Tuning the Energy Gap by Supramolecular Approaches: Towards Near‐Infrared Organic Assemblies and Materials

Exciton Transport in Molecular Aggregates – From Natural Antennas to Synthetic Chromophore Systems

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