Aggregation Induced Emission of Excited-State Intramolecular Proton Transfer Compounds: Nanofabrication Mediated White Light Emitting Nanoparticles

2016 ◽  
Vol 16 (6) ◽  
pp. 3400-3408 ◽  
Author(s):  
Anu Kundu ◽  
P. S. Hariharan ◽  
K. Prabakaran ◽  
Dohyun Moon ◽  
Savarimuthu Philip Anthony
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
White Light ◽  
Intramolecular Proton Transfer ◽  
Light Emitting ◽  
Aggregation Induced Emission ◽  
Proton Transfer Compounds

Symmetrical and unsymmetrical thiazole-based ESIPT derivatives: the highly selective fluorescence sensing of Cu2+ and structure-controlled reversible mechanofluorochromism

CrystEngComm ◽  
2021 ◽  
Vol 23 (38) ◽  
pp. 6769-6777
Author(s):  
Parthasarathy Gayathri ◽  
Karuppaiah Kanagajothi ◽  
Probal Nag ◽  
Neethu Anand ◽  
Vennapusa Sivaranjana Reddy ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Fluorescence Sensing ◽  
Light Emitting ◽  
Organic Fluorophores

Excited state intramolecular proton transfer (ESIPT) process-based organic fluorophores provide an opportunity to develop large Stokes-shifted multifunctional fluorescence systems for light emitting, chemosensing and bioimaging applications.

Fluorescence turn-on detection of cysteine over homocysteine and glutathione based on “ESIPT” and “AIE”

2015 ◽  
Vol 7 (12) ◽  
pp. 5028-5033 ◽  
Author(s):  
Hualong Liu ◽  
Xiaoyan Wang ◽  
Yu Xiang ◽  
Aijun Tong
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Aggregation Induced Emission ◽  
Emission Properties ◽  
Turn On ◽  
Fluorescence Turn On

A turn-on detection of cysteine (Cys) based on excited-state intramolecular proton transfer and aggregation-induced emission properties of a salicylaldehyde azine derivative has been established.

scholarly journals En Route to White-Light Generation Utilizing Nanocomposites Composed of Ultrasmall CdSe Nanodots and Excited-State Intramolecular Proton Transfer Dyes

2011 ◽  
Vol 3 (5) ◽  
pp. 1713-1720 ◽  
Author(s):  
Hsin-Chieh Peng ◽  
Chia-Cheng Kang ◽  
Ming-Ren Liang ◽  
Chun-Yen Chen ◽  
Alexander Demchenko ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
White Light ◽  
Intramolecular Proton Transfer ◽  
White Light Generation ◽  
Light Generation

scholarly journals Molecular and Crystalline Requirements for Solid State Fluorescence Exploiting Excited State Intramolecular Proton Transfer

2019 ◽  
Author(s):  
Michael Dommett ◽  
Miguel Rivera ◽  
Matthew T. H. Smith ◽  
Rachel Crespo Otero
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Extensive Study ◽  
Structure Property ◽  
Aggregation Induced Emission ◽  
Organic Systems ◽  
Structure Property Relationships ◽  
Formidable Challenge

Aggregation induced emission offers a route to the development of emissive technologies based on solely organic systems. However, maximising fluorescence quantum efficiencies (QE) is a formidable challenge in attaining first-principles materials design, due to the interplay between the electronic structure of the chromophore and the molecular crystal. The identification of radiative and nonradiative channels, and how these are affected by aggregation, can rationalise the emissive properties of materials and aid in the design of yet more efficient fluorophores. In the current work, we examine the mechanism behind aggregation induced emission in two related families of compounds with lasing properties, which undergo excited state intramolecular proton transfer (ESIPT). We systematically investigate competing excited state decay channels in a total of eleven crystals to evaluate the factors needed for efficient ESIPT fluorophores, aided by a full evaluation of the crystal structures, exciton coupling, and exciton hopping rates. We show that in addition to the restriction of nonradiative pathways, an efficient ESIPT is essential to maximise the QE in the solid state. This extensive study of structure-property relationships for fluorophores based on the ESIPT mechanism bridges the understanding of molecular photophysics with crystal structure, accelerating the development of highly efficient solid state emitters.

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