Deciphering the grounds of the suitability of acylhydrazones as efficient photoswitches

2019 ◽  
Vol 21 (29) ◽  
pp. 16075-16082 ◽  
Author(s):  
Miquel Moreno ◽  
Ricard Gelabert ◽  
José M. Lluch
Keyword(s):  
Proton Transfer ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Large Stokes Shift

Calculations on several acylhydrazones are carried out to explain their diverse photochemistry experimentally observed. Results disclose the role of the intramolecular proton transfer or the loss of the azidic proton in the large Stokes shift.

scholarly journals An NIR-emitting lysosome-targeting probe with large Stokes shift via coupling cyanine and excited-state intramolecular proton transfer

2017 ◽  
Vol 53 (26) ◽  
pp. 3697-3700 ◽  
Author(s):  
Dipendra Dahal ◽  
Lucas McDonald ◽  
Xiaoman Bi ◽  
Chathura Abeywickrama ◽  
Farai Gombedza ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Large Stokes Shift

A NIR-emitting probe with a large Stokes shift (Δλ ≈ 234 nm) can selectively show lysosome organelles without exhibiting “an alkalinizing effect”.

A novel 2-(2′-aminophenyl)benzothiazole derivative displays ESIPT and permits selective detection of Zn2+ ions: experimental and theoretical studies

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71496-71500 ◽  
Author(s):  
Subramaniyan Janakipriya ◽  
Selvaraj Tamilmani ◽  
Sathiah Thennarasu
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Theoretical Studies ◽  
Selective Detection ◽  
Large Stokes Shift ◽  
Benzothiazole Derivative ◽  
Experimental And Theoretical Studies

Synthesis of a novel 2-(2′-aminophenyl)benzothiazole based probe (1) and demonstration of excited state intramolecular proton transfer (ESIPT) with a large Stokes shift (∼246 nm) are presented.

Near-infrared fluorescent dyes with large Stokes shifts: light generation in BODIPYs undergoing excited state intramolecular proton transfer

2017 ◽  
Vol 15 (19) ◽  
pp. 4072-4076 ◽  
Author(s):  
Qiang Fei ◽  
Xianfeng Gu ◽  
Yajing Liu ◽  
Ben Shi ◽  
Hengyan Liu ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Near Infrared ◽  
Fluorescent Dyes ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Large Stokes Shift ◽  
Light Generation ◽  
Stokes Shifts

New ESIPT-based BODIPYs are developed to render the NIR emissions with a large Stokes shift.

scholarly journals Facile Synthesis of an Organic Solid State Near-Infrared-Emitter with Large Stokes Shift via Excited-State Intramolecular Proton Transfer

ACS Omega ◽  
2018 ◽  
Vol 3 (10) ◽  
pp. 14341-14348 ◽  
Author(s):  
Abhishek Kumar Gupta ◽  
Ashwani Kumar ◽  
Ranjit Singh ◽  
Manisha Devi ◽  
Abhimanew Dhir ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Near Infrared ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Facile Synthesis ◽  
Large Stokes Shift ◽  
Organic Solid ◽  
Infrared Emitter

Self-absorption-free excited-state intramolecular proton transfer (ESIPT) emitters for high brightness and luminous efficiency organic fluorescent electroluminescent devices

2021 ◽  
Author(s):  
Jakkapan Kumsampao ◽  
Chaiyon Chaiwai ◽  
Chatatrika Sukpattanacharoen ◽  
Thanyarat Chawanpunyawat ◽  
Phattananawee Nalaoh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Proton Transfer ◽  
Stokes Shift ◽  
Intramolecular Proton Transfer ◽  
Luminous Efficiency ◽  
Attractive Feature ◽  
High Brightness ◽  
Electroluminescent Devices ◽  
Large Stokes Shift

Excited-state intramolecular proton transfer (ESIPT) chromophores with an attractive feature of a large Stokes shift in optical properties have been exceedingly considered as prime candidates for various applications. However, as...

Dynamics of excited-state intramolecular proton transfer reactions in piroxicam. Role of triplet states

1994 ◽  
Vol 226 (3-4) ◽  
pp. 275-280 ◽  
Author(s):  
Dae Won Cho ◽  
Yong Hee Kim ◽  
Minjoong Yoon ◽  
Sae Chae Jeoung ◽  
Dongho Kim
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Transfer Reactions ◽  
Triplet States ◽  
Proton Transfer Reactions

scholarly journals Elucidating the Catalytic Role of Mg(II) in the Intramolecular Proton Transfer Reaction in Thymine

2017 ◽  
Vol 56 (3) ◽  
Author(s):  
Stefan Vogt-Geisse ◽  
Soledad Gutiérrez-Oliva ◽  
Bárbara Herrera ◽  
Alejandro Toro-Labbé
Keyword(s):  
Proton Transfer ◽  
Catalytic Effect ◽  
Reaction Force ◽  
Physical Nature ◽  
Proton Transfer Reaction ◽  
Intramolecular Proton Transfer ◽  
Force Analysis ◽  
Catalytic Role ◽  
The Difference

In the framework of the reaction force analysis a study of the mechanism of the 1-3 intramolecular proton transfer in free and Mg (II) coordinated Thymine was done in terms of the reaction electronic flux and Wiberg bond orders. Profiles of these properties evidentiated differences between the proton transfer mechanisms induced by the presence of Mg(II) cation. A significative lowering in the activation energy put forward the catalytic effect of Mg. The reaction force analysis allows a precise identification of the catalytic effect thus uncovering the physical nature of activation energies. While in the free Thymine electronic polarization and transfer processes are present separately, in the Mg(II) coordinated Thymine both effects are observed simultaneously and are localized on the ring in the molecular topology. It is argued that the difference in the charge transfer mechanism leads to a more stable enol form in the Mg(II) coordinated Thymine.

Sign in / Sign up

Export Citation Format

Share Document