Superior alignment of multi-chromophoric perylenebisimides in nematic liquid crystals and their application in switchable optical waveguides

Kendhale, AM Amol; Schenning, Aphj Albert; Debije, MG Michael

doi:10.1039/c2ta00400c

Cited by 46 publications

(45 citation statements)

References 29 publications

(26 reference statements)

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“…It has been convincingly shown that the degree of PBI dye alignment in a nematic liquid-crystalline host could be appreciably improved by attaching PBI units through rigid N−N linkage as in PBI dimer 2-1a and its trimer analogue. 152 As the focus of our Review is on supramolecular systems, we will obviate here further discussion on these photophysical studies and refer the interested readers to the cited original works.…”

Section: Rigid Pbi Dimersmentioning

confidence: 99%

Perylene Bisimide Dye Assemblies as Archetype Functional Supramolecular Materials

et al. 2015

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CONTENTS 1. Introduction 962 1.1. Prologue 962 1.2. Parent Perylene Bisimide Chromophore 963 1.3. Core-Substituted Perylene Bisimides 964 1.4. Perylene Bisimides in the Solid State 966 1.5. Areas of Application 966 2. Linear, Dendritic, and Macrocyclic Covalent PBI Ensembles 968 2.1. Excitonic Coupling and Deactivation Processes of Photoexcited PBIs 969 2.2. Rigid PBI Dimers 971 2.3. Flexible PBI Ensembles 974 2.4. Cyclic PBI Ensembles 976 3. π-Stacked PBI Assemblies 979 3.1. Self-Assembly of Core-Unsubstituted PBIs in Solution 979 3.2. Organization of Core-Unsubstituted PBIs in the Bulk Solid State 984 3.3. Self-Assembly of Amphiphilic PBIs in Aqueous Media and Solid Bulk State 987 3.4. Self-Assembly of Core-Substituted PBIs 991 3.5. Self-Assembly of Dye Arrays Composed of Multiple PBIs 995 3.6. Self-Assembly of Multichromophoric PBI Conjugates Containing Other Dyes 996 4. Hydrogen-Bond Directed Self-Assembly 1000 4.1. Self-Assembly Directed by Imide−Imide H-Bonding Interactions 1000 4.2. Self-Assembly Directed by Side-Chain Amide−Amide H-Bonding Interactions 1003 4.3. Self-Assembly Directed by Other H-Bonding Interactions 1006 4.4. Coassembly Directed by Imide−Melamine H-Bonding Interactions 1008 4.5. Coassembly Directed by Melamine−Cyanurate/Barbiturate H-Bonding Interactions 1011

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Section: Rigid Pbi Dimersmentioning

confidence: 99%

Perylene Bisimide Dye Assemblies as Archetype Functional Supramolecular Materials

et al. 2015

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“…These high luminescent and optically switchable materials could be promising candidates for displays, colour filters, light modulators, data storage, second harmonic generation, etc. [27][28][29][30][31][32][33][34]…”

Section: Introductionmentioning

confidence: 99%

Highly Luminescent and Optically Switchable Hybrid Material by One-Pot Encapsulation of Dyes into MgAPO-11 Unidirectional Nanopores

et al. 2014

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In this work a highly fluorescent hybrid material with strong anisotropic response is obtained by "one-pot" synthesis. The system is based on the "in situ" encapsulation of two chromophores, Acridine (AC) and Pyronine Y (PY), with similar molecular structure but perpendicular dipole moment vectors, into the 1D-nanochannels of MgAPO-11 aluminophosphate crystals (AEL structure). This nondiffusional limited synthetic approach allows the filling of very long channels reducing considerably the time of sample preparation (>10 μm rectangular-like AEL particles), as well as a perfect fit between the molecular and channel dimensions avoiding the leakage of the guest dyes and any Davidov coupling. As a consequence, both dyes are embedded only in momomeric units and preferentially aligned with their long molecular axes along the channels. Interestingly, the less bulky nature of AC without pendant groups leads to a much stronger incorporation with respect to PY (48:1), enabling an efficient FRET process between them. The final solid hybrid material shows fluorescent quantum yields higher than the respective dyes in diluted solution together with blue (AC)/green (PY) fluorescence colour switching depending on the direction of the polarizers upon UV light excitation.

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“…For the gel especially, drying the entangled fibres to give a xerogel film resulted in a randomly aligned network. Whilst aligned PBIs have been reported, [18][19][20] aligning PBI aggregates can be very difficult using conventional techniques, 21,22 which restricts the use of PBIs.…”

mentioning

confidence: 99%

Aligning self-assembled gelators by drying under shear

2016

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Superior alignment of multi-chromophoric perylenebisimides in nematic liquid crystals and their application in switchable optical waveguides

Cited by 46 publications

References 29 publications

Perylene Bisimide Dye Assemblies as Archetype Functional Supramolecular Materials

Perylene Bisimide Dye Assemblies as Archetype Functional Supramolecular Materials

Highly Luminescent and Optically Switchable Hybrid Material by One-Pot Encapsulation of Dyes into MgAPO-11 Unidirectional Nanopores

Aligning self-assembled gelators by drying under shear

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