Solution and solid-state studies of a new supramolecular proton transfer salt and its VO2 complex constructed with chelidamic acid and 3,4-diaminopyridine

2016 ◽  
Vol 14 (4) ◽  
pp. 811-822 ◽  
Author(s):  
Hadis Shams ◽  
Zohreh Derikvand ◽  
Michal Dusek ◽  
Vaclav Eigner ◽  
Ardeshir Shokrollahi ◽  
...  
Keyword(s):  
Solid State ◽  
Proton Transfer ◽  
Chelidamic Acid

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.

In Search of Excited-State Proton Transfer in the Lumichrome Dimer in the Solid State:  Theoretical and Experimental Approach

2006 ◽  
Vol 110 (14) ◽  
pp. 4638-4648 ◽  
Author(s):  
Ewa Sikorska ◽  
Igor Khmelinskii ◽  
Maciej Kubicki ◽  
Wiesław Prukała ◽  
Marcin Hoffmann ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Experimental Approach ◽  
Excited State Proton Transfer

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

scholarly journals An experimental and theoretical NMR study of NH-benzimidazoles in solution and in the solid state: proton transfer and tautomerism

2014 ◽  
Vol 10 ◽  
pp. 1620-1629 ◽  
Author(s):  
Carla I Nieto ◽  
Pilar Cabildo ◽  
M Ángeles García ◽  
Rosa M Claramunt ◽  
Ibon Alkorta ◽  
...  
Keyword(s):  
Experimental Study ◽  
Solid State ◽  
Proton Transfer ◽  
Chemical Shifts ◽  
Nmr Study

This paper reports the 1H, 13C and 15N NMR experimental study of five benzimidazoles in solution and in the solid state (13C and 15N CPMAS NMR) as well as the theoretically calculated (GIAO/DFT) chemical shifts. We have assigned unambiguously the "tautomeric positions" (C3a/C7a, C4/C7 and C5/C6) of NH-benzimidazoles that, in some solvents and in the solid state, appear different (blocked tautomerism). In the case of 1H-benzimidazole itself we have measured the prototropic rate in HMPA-d 18.

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