Synthesis and characterization of excited state intramolecular proton transfer based 2-hydroxylaryl imidazole fluorescent materials

2012 ◽  
Vol 162 (1-2) ◽  
pp. 58-63 ◽  
Author(s):  
Aman Mahajan ◽  
Ramanpreet Kaur Aulakh ◽  
R.K. Bedi ◽  
Sandeep Kumar ◽  
Subodh Kumar ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Synthesis And Characterization ◽  
Fluorescent Materials

scholarly journals Synthesis and Characterization of White-Light Luminescent End-Capped Polyimides Based on FRET and Excited State Intramolecular Proton Transfer

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 4050
Author(s):  
Atsuko Tabuchi ◽  
Teruaki Hayakawa ◽  
Shigeki Kuwata ◽  
Ryohei Ishige ◽  
Shinji Ando
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
White Light ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Material Design ◽  
Intramolecular Proton Transfer ◽  
Anion Formation ◽  
Intramolecular Hydrogen

N-cyclohexylphthalimide-substituted trifluoroacetylamino (CF3CONH-) group (3TfAPI), which forms an intramolecular hydrogen bond, was synthesized, and it exhibited a bright yellow fluorescence owing to the excited-state intramolecular proton transfer (ESIPT) in the solution and crystalline states. In addition, CF3CONH-substituted phthalic anhydride (3TfAPA) was synthesized, which was attached to the termini of a blue-fluorescent semi-aromatic polyimide (PI) chain. Owing to the efficient Förster resonance energy transfer (FRET) occurring from the main chain to the termini and the suppression of deprotonation (anion formation) at the 3TfAPA moiety by H2SO4 doping, the resulting PI films display bright white fluorescence. Moreover, the enhancement of the chain rigidity by substituting the diamine moiety results in an increase in the quantum yield of white fluorescence (Φ) by a factor of 1.7, due to the suppression of local molecular motion. This material design strategy is promising for preparing thermally stable white-light fluorescent PIs applicable to solar spectral convertors, displays, and ICT devices.

scholarly journals An enhanced sampling QM/AMOEBA approach: The case of the excited state intramolecular proton transfer in solvated 3-hydroxyflavone

2021 ◽  
Vol 154 (18) ◽  
pp. 184107
Author(s):  
Michele Nottoli ◽  
Mattia Bondanza ◽  
Filippo Lipparini ◽  
Benedetta Mennucci
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Enhanced Sampling

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.

ChemInform Abstract: EXCITED-STATE INTRAMOLECULAR PROTON TRANSFER AND VIBRATIONAL RELAXATION IN 2-(2-HYDROXYPHENYL)BENZOTHIAZOLE

1983 ◽  
Vol 14 (28) ◽  
Author(s):  
K. DING ◽  
S. J. COURTNEY ◽  
A. J. G. STRANDJORD ◽  
S. FLOM ◽  
D. M. FRIEDRICH ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Vibrational Relaxation ◽  
Intramolecular Proton Transfer

Reaction-based sensing of fluoride ions using desilylation method for triggering excited-state intramolecular proton transfer

2016 ◽  
Vol 28 (7-8) ◽  
pp. 693-706 ◽  
Author(s):  
Ajit Kumar Mahapatra ◽  
Sanchita Mondal ◽  
Saikat Kumar Manna ◽  
Kalipada Maiti ◽  
Rajkishor Maji ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Fluoride Ions
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