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.

scholarly journals Ingenious modification of molecular structure effectively regulates excited-state intramolecular proton and charge transfer: a theoretical study based on 3-hydroxyflavone

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29589-29597 ◽  
Author(s):  
Jianhui Han ◽  
Xiaochun Liu ◽  
Chaofan Sun ◽  
You Li ◽  
Hang Yin ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Theoretical Study ◽  
Intramolecular Charge Transfer ◽  
Intramolecular Proton Transfer ◽  
Great Promise ◽  
Fluorescence Sensing

Harnessing ingenious modification of molecular structure to regulate excited-state intramolecular proton transfer (ESIPT) and intramolecular charge transfer (ICT) characteristics holds great promise in fluorescence sensing and imaging.

Fluorescence Sensing of Anions Based on Inhibition of Excited-State Intramolecular Proton Transfer

2007 ◽  
Vol 72 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Yunkou Wu ◽  
Xiaojun Peng ◽  
Jiangli Fan ◽  
Shang Gao ◽  
Maozhong Tian ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Fluorescence Sensing

scholarly journals Red-Shift (2-Hydroxyphenyl)-Benzothiazole Emission by Mimicking the Excited-State Intramolecular Proton Transfer Effect

2021 ◽  
Vol 9 ◽  
Author(s):  
Yong Ren ◽  
Lei Zhou ◽  
Xin Li
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Near Infrared ◽  
Photophysical Properties ◽  
Molecular Size ◽  
Infrared Region ◽  
Intramolecular Proton Transfer ◽  
Quantum Yields ◽  
Organic Fluorophores ◽  
Imaging Probes

Novel strategies to optimize the photophysical properties of organic fluorophores are of great significance to the design of imaging probes to interrogate biology. While the 2-(2-hydroxyphenyl)-benzothiazole (HBT) fluorophore has attracted considerable attention in the field of fluorescence imaging, its short emission in the blue region and low quantum yield restrict its wide application. Herein, by mimicking the excited-state intramolecular proton transfer (ESIPT) effect, we designed a series of 2-(2-hydroxyphenyl)-benzothiazole (HBT) derivatives by complexing the heteroatoms therein with a boron atom to enhance the chance of the tautomerized keto-like resonance form. This strategy significantly red-shifted the emission wavelengths of HBT, greatly enhanced its quantum yields, and caused little effect on molecular size. Typically, compounds 12B and 13B were observed to emit in the near-infrared region, making them among the smallest organic structures with emission above 650 nm.

Light-emitting conjugated microporous polymers based on an excited-state intramolecular proton transfer strategy and selective switch-off sensing of anions

2020 ◽  
Vol 4 (10) ◽  
pp. 3040-3046 ◽  
Author(s):  
Yuwei Zhang ◽  
Qikun Sun ◽  
Zhongping Li ◽  
Yongfeng Zhi ◽  
He Li ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Fluoride Anion ◽  
Anion Sensing ◽  
Light Emitting ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Light-emitting conjugated microporous polymers have been designed via an excited-state intramolecular proton transfer strategy for fluoride anion sensing.

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