scholarly journals Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4298
Author(s):  
Patrícia A. A. M. Vaz ◽  
João Rocha ◽  
Artur M. S. Silva ◽  
Samuel Guieu
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Blue Emission ◽  
Intramolecular Proton Transfer ◽  
Optoelectronic Properties ◽  
Deep Blue ◽  
Boron Complexes ◽  
Cie Coordinates

Benzimidazole-based boranils were designed and synthesized in order to assess the influence of halogen substituents on their optoelectronic properties. All compounds are photoluminescent in solution and solid state. Compared to the free ligands, the new boranils emit at a lower wavelength, by elimination of the excited-state intramolecular proton transfer observed with the ligands. In the solid state, some of the boranils exhibit a deep blue emission, presenting Commission Internationale de l’Éclairage (CIE) coordinates with an x-component of less than 0.16 and a y-component smaller than 0.04, highly desired values for the development of blue emitting materials.

scholarly journals The development of aryl-substituted 2-phenylimidazo[1,2-a]pyridines (PIP) with various colors of excited-state intramolecular proton transfer (ESIPT) luminescence in the solid state

2016 ◽  
Vol 4 (16) ◽  
pp. 3599-3606 ◽  
Author(s):  
Toshiki Mutai ◽  
Tatsuya Ohkawa ◽  
Hideaki Shono ◽  
Koji Araki
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Aryl Group ◽  
Red Emission ◽  
Wide Range

The color of ESIPT luminescence of HPIP is tuned in a wide range by the introduction of aryl group(s), and thus a series of PIPs showing blue to red emission is realized.

scholarly journals Nitrile-Substituted 2-(Oxazolinyl)-Phenols: Minimalistic Excited-State Intramolecular Proton Transfer (ESIPT)-Based Fluorophores

2020 ◽  
Author(s):  
Dominik Göbel ◽  
Daniel Duvinage ◽  
Tim Stauch ◽  
Boris Nachtsheim
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Density Functional ◽  
Intramolecular Proton Transfer ◽  
Crystal Structure Analysis ◽  
Quantum Yields ◽  
Functional Theory ◽  
Emission Properties ◽  
Emission Enhancement

Herein, we present minimalistic single-benzene, excited-state intramolecular proton transfer (ESIPT) based fluorophores as powerful solid state emitters. The very simple synthesis gave access to all four regioisomers of nitrile-substituted 2(oxazolinyl)phenols (MW = 216.1). In respect of their emission properties they can be divided into aggregation-induced emission enhancement (AIEE) luminophores (1-CN and 2-CN), dual state emission (DSE) emitters (3-CN) and aggregation-caused quenching (ACQ) fluorophores (4‐CN). Remarkably, with compound 1-CN we discovered a minimalistic ESIPT based fluorophore with extremely high quantum yield in the solid state ΦF = 87.3% at λem = 491 nm. Furthermore, quantum yields in solution were determined up to ΦF = 63.0%, combined with Stokes shifts up till 11.300 cm–1. Temperature dependent emission mapping, crystal structure analysis and time-dependent density functional theory (TDDFT) calculations gave deep insight into the origin of the emission properties.<br>

Solution and solid-state Excited-State Intramolecular Proton Transfer (ESIPT) emitters incorporating Bis-triethyl-or triphenylsilylethynyl units

2019 ◽  
Vol 160 ◽  
pp. 915-922 ◽  
Author(s):  
Julien Massue ◽  
Abdellah Felouat ◽  
Mathieu Curtil ◽  
Pauline M. Vérité ◽  
Denis Jacquemin ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer

Pyridine-hydrazone-controlled cyanide detection in aqueous media and solid-state: tuning the excited-state intramolecular proton transfer (ESIPT) fluorescence modulated by intramolecular NH⋯Br hydrogen bonding

The Analyst ◽  
2020 ◽  
Vol 145 (3) ◽  
pp. 1062-1068 ◽  
Author(s):  
Caihui Rao ◽  
Zhichao Wang ◽  
Zheyao Li ◽  
Lu Chen ◽  
Chao Fu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Aqueous Media ◽  
Intramolecular Proton Transfer ◽  
Fluorescent Chemosensor ◽  
Aqueous Environments ◽  
Cyanide Sensing

A new efficient pyridine-hydrazone-substituted naphthalimide receptor 4a-E has been synthesized as a selective colorimetric and fluorescent chemosensor for cyanide sensing in aqueous environments through a unique ESIPT mechanism.

Excited-state intramolecular proton-transfer (ESIPT)-inspired solid state emitters

2016 ◽  
Vol 45 (1) ◽  
pp. 169-202 ◽  
Author(s):  
Vikas S. Padalkar ◽  
Shu Seki
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
State Of The Art ◽  
Photophysical Properties ◽  
Intramolecular Proton Transfer ◽  
The State

The state-of-the-art of ESIPT-inspired solid state emitters and their photophysical properties and applications in recent 5 years were systematically reviewed.

Ethynyl-Tolyl Extended 2-(2′-Hydroxyphenyl)benzoxazole Dyes: Solution and Solid-state Excited-State Intramolecular Proton Transfer (ESIPT) Emitters

2018 ◽  
Vol 2019 (5) ◽  
pp. 1134-1144 ◽  
Author(s):  
Maxime Munch ◽  
Mathieu Curtil ◽  
Pauline M. Vérité ◽  
Denis Jacquemin ◽  
Julien Massue ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer

New insights on the ESIPT process based on solid-state data and state-of-the-art computational methods

2021 ◽  
Author(s):  
Jean Nunes Laner ◽  
Henrique de Castro Silva Junior ◽  
Fabiano Severo Rodembusch ◽  
Eduardo Ceretta Moreira
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
State Of The Art ◽  
Computational Cost ◽  
Intramolecular Proton Transfer ◽  
High Accuracy ◽  
Computational Techniques ◽  
Vibrational Properties ◽  
State Data

Updated computational techniques to investigate the excited-state intramolecular proton transfer (ESIPT) process obtaining theoretical electronic and vibrational properties in the solid-state with high accuracy at a small computational cost.

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