Anti-Solvatochromic and Highly Emissive Twisted D-A structure with Intramolecular Hydrogen Bond

2022 ◽  
Author(s):  
Hao Wang ◽  
Hong-Wen Liang ◽  
Tian Jia ◽  
Zhenzhen Wang ◽  
Jia-Qi Wang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Quantum Yield ◽  
Intramolecular Hydrogen Bond ◽  
Electron Donor ◽  
Fluorescent Dyes ◽  
High Quantum Yield ◽  
Common Strategy ◽  
Donor Acceptor ◽  
Intramolecular Hydrogen

Electron donor-acceptor (D-A) structure are the most common strategy to develop fluorescent dyes with high quantum yield in solution and the solid state. However, most of the D-A type fluorescent...

An ESIPT fluorophore with a switchable intramolecular hydrogen bond for applications in solid-state fluorochromism and white light generation

2016 ◽  
Vol 4 (10) ◽  
pp. 2011-2016 ◽  
Author(s):  
Ken-ichi Sakai ◽  
Saki Tsuchiya ◽  
Takemitsu Kikuchi ◽  
Tomoyuki Akutagawa
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Intramolecular Hydrogen Bond ◽  
White Light ◽  
Excitation Wavelength ◽  
Acid Base ◽  
White Light Generation ◽  
Fluorescence Color ◽  
Light Generation ◽  
Intramolecular Hydrogen

Acid/base-switched solid-state fluorochromism and excitation-wavelength-dependent fluorescence color tuning have been demonstrated using an ESIPT fluorophore with a switchable intramolecular hydrogen bond.

Heterocyclic Tautomerism. The Solution and Crystal Structures of 1-(4',6'-Dimethylpyrimidin-2'-yl)-3-methylpyrazol-5-ol

1984 ◽  
Vol 37 (2) ◽  
pp. 459 ◽  
Author(s):  
PJ Steel ◽  
AR Whyte
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Crystal Structures ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Intramolecular Hydrogen ◽  
Strong Intramolecular Hydrogen Bond

Both in the solid state and in solution, the title compound is shown to exist as the OH tautomer (3), which is stabilized by a strong intramolecular hydrogen bond. Crystals of the pyrazol-5-ol (3) are monoclinic: P 21/c, a 9.692(5), b 7.371(5), c 15.345(8) �, β 106.07(4)�, Z 4; the structure was refined to R 0.072 and Rw 0.062.

Intramolecular hydrogen bond with two potential minima in some 1,3-keto-enols in solutions and solid state

1999 ◽  
Vol 475 (2-3) ◽  
pp. 287-293 ◽  
Author(s):  
E.E Emelina ◽  
B.A Ershov ◽  
A.V Gribanov ◽  
A.I.Koltsov ◽  
I Petkov ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Intramolecular Hydrogen Bond ◽  
Intramolecular Hydrogen

The 15N and 13C solid state NMR study of intramolecular hydrogen bond in some Schiff's bases

2000 ◽  
Vol 16 (4) ◽  
pp. 285-289 ◽  
Author(s):  
B Kamieński ◽  
W Schilf ◽  
T Dziembowska ◽  
Z Rozwadowski ◽  
A Szady-Chełmieniecka
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Intramolecular Hydrogen Bond ◽  
Solid State Nmr ◽  
Schiff’S Bases ◽  
Schiff's Bases ◽  
Nmr Study ◽  
Intramolecular Hydrogen

Conformations of the Nucleoside Analogs Formycin, 2-Azaadenosine, and Nebularine in Solution

1977 ◽  
Vol 32 (7-8) ◽  
pp. 528-538 ◽  
Author(s):  
H.-D. Lüdemann ◽  
E. Westhof
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Magnetic Resonance ◽  
Intramolecular Hydrogen Bond ◽  
Proton Magnetic Resonance ◽  
Nucleoside Analogs ◽  
The Common ◽  
Intramolecular Hydrogen

The ribose conformations of formycin, 2-azaadenosine, nebularine, 8-bromoinosine, and 8-bromo- xanthosine have been studied using proton magnetic resonance in ND3 solutions, in D2O solutions, and in pyridine solutions. The temperature was varied between - 60 °C and +40 °C in ND3 and between +10 °C and +60 °C in D2O solutions. In solution, 2-azaadenosine and nebularine have a conformational behaviour similar to that of the common purine (β) ribosides. This is in agreement with the conformations observed in the solid state. The conformations of formycin and formycin B have strong analogies with those of the 8-bromopurineribosides and differ significantly from those of the 8-azapurineribosides since they adopt preferentially the syn-S-g+ conformation. This con­formation is very probably stabilized by an intramolecular hydrogen bond between O (5′) and N (3).

scholarly journals 1-Hydroxy-2-methoxy-6-methyl-9,10-anthraquinone fromRennellia ellipticaKorth.

2009 ◽  
Vol 65 (6) ◽  
pp. o1435-o1435 ◽  
Author(s):  
Nor Hadiani Ismail ◽  
Che Puteh Osman ◽  
Rohaya Ahmad ◽  
Khalijah Awang ◽  
Seik Weng Ng
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Hydroxy Group ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Independent Molecule ◽  
Asymmetric Unit ◽  
Compound C ◽  
Planar Molecules ◽  
Intramolecular Hydrogen

The title compound, C16H12O4, exists as planar molecules in the solid state (r.m.s. deviation of 0.02 Å in one molecule and 0.07 Å in the second independent molecule comprising the asymmetric unit). In each molecule, the 1-hydroxy group forms an intramolecular hydrogen bond to the adjacent carbonyl O atom.

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