Spectral characterizations and photophysical properties of one-step synthesized blue fluorescent 4′-aryl substituted 2,2′:6′,2′′-terpyridine for OLEDs application

Lakshmanan, Raja; Shivaprakash, N. C.; Nair, Sindhu Sukumaran

doi:10.1016/j.jlumin.2015.08.005

Cited by 19 publications

(7 citation statements)

References 42 publications

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“…NH 3, according to the literature method. [33] The synthesized ligand L was characterized by 1 H and 13 C NMR spectroscopy and spectral data are given in experimental section. The 1 H and 13 The ligand L shows absorption maxima at 288 nm in aqueous HEPES buffer (10 mM) in its absorption spectrum, corresponds to π!π* transition.…”

Section: Resultsmentioning

confidence: 99%

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Zinc‐Terpyridine Based Chemosensor for Detection of Pyrophosphate Anion in Aqueous Medium

Das

Sutradhar

Singh

et al. 2021

Zeitschrift anorg allge chemie

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A simple fluorescent sensor of zinc-terpyridine complex of the terpyridine ligand 4'-(3,4,5-trimethoxyphenyl)-2,2' : 6',2''-terpyridine was prepared and utilized for selective sensing of pyrophosphate anion (PPi) in aqueous medium at physiological pH. The sensor complex showed an excellent selectivity of PPi over various other anions such as Cl À , F À , Br À , I À , CO 3 2À , HCO 3 À , NO 3 À , OH À , HPO 4 2À , SO 4 2À , SO 3 2À , S 2 O 3 2À in water. UV-Visible and fluorescence spectroscopic method have been used to perform the detection study. The sensor complex showed~50 fold enhancement of fluorescence intensity upon addition of PPi and excellent sensitivity with lowest limit of detection (LOD) for the detection of PPi anion was found to be~300 nM.

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Section: Resultsmentioning

confidence: 99%

“…The ligand 4'-(3,4,5-trimethoxyphenyl)-2,2' : 6',2''-terpyridine L was synthesized according to literature method. [33] 1 H NMR and 13 C NMR spectra were recorded on a 400 MHz Bruker NMR spectrometer. Chemical shifts were expressed in ppm.…”

Section: Methodsmentioning

confidence: 99%

Zinc‐Terpyridine Based Chemosensor for Detection of Pyrophosphate Anion in Aqueous Medium

Das

Sutradhar

Singh

et al. 2021

Zeitschrift anorg allge chemie

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“…Hence, it was confirmed that ELC 3 is more electron-donating in nature. 36 At the same time, Jadhav et al successfully synthesized a novel phenanthroimidazole (PI)-substituted (Figure 10) de- rivative. As we all know that PI shows good thermal stability, they introduced a cyano group to PI to increase its thermal stability.…”

Section: Progress Of Blue Light Emitters In Indiamentioning

confidence: 99%

“…46 As per the literature survey, the blue OLED device started with only 15.8 % EQE in 2012 and reached to a record high EQE of almost 27.2 % in 2016. The EQE and wavelength for the reported blue emitter are shown below in Table 3 [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] from the year 2010 to 2016.…”

Section: Progress Of Blue Light Emitters In Indiamentioning

confidence: 99%

A Review on the Milestones of Blue Light-Emitting Materials in India

et al. 2023

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Since 1987 in the field of optoelectronics, organic light-emitting diodes (OLEDs) have secured their position because of their extreme use in panels of lighting applications such as TV and smartphone displays. At present, OLEDs are at top-notch position in the lighting market for their promising features. The field of OLEDs is rapidly growing day by day in academia and industry due to the success of OLEDs in the form of excellent efficiency, feasible methods, excellent lifetime, color purity, and superb device architecture. As a result, OLEDs are new profitable leading devices of the 21st century. However, the OLED industry has evolved in optoelectronics in the last 30 years and is advancing rapidly just because of the development in OLED materials (fluorescent, phosphorescent, thermally activated delayed fluorescent, and blue light-emitting materials). Blue light-emitting materials have achieved incredible popularity nationally and internationally. At the international level, USA, Japan, Korea, and Germany are at the top of the list in the production of OLEDs. India has also seen rapid progress in OLED development in the last 12 years and details of research in blue OLEDs by key players of India are involved in this report.1 Introduction1.1 OLED Construction1.2 Working of OLED2 OLED Development2.1 Historical Background of OLED2.1.1 International Status2.1.2 National Status3 Progress of Blue Emitters in India4 Present Scenario of Blue OLEDs5 Conclusions and Outlook

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“…It is possible to achieve materials having the expected photophysical properties by modification of lead structure and its length and substituents ,. Many 2,2’:6’,2”‐terpyridines with a substituent at the 4’ position are known to exhibit attractive optical and electronic properties . Simple derivatives can be obtained by Stille or Suzuki coupling reactions, which deal with stannylated or boronic derivatives respectively, reactions with this kind of reagents are challenging due to the reaction conditions and toxic and unstable character of reagents .…”

Section: Introductionmentioning

confidence: 99%

Highly Luminescent 4′‐(4‐ethynylphenyl)‐2,2’:6’,2’’‐Terpyridine Derivatives as Materials for Potential Applications in Organic Light Emitting Diodes

et al. 2017

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Four novel derivatives of 4'-(4-ethynylphenyl)-2,2':6',2''-terpyridine with 7-(N,N-diphenylamino)-9,9-dioctylfluorene, 7-(9H-carbazo-9-yl)-9,9-dioctylfluorene, 9-octyl-9H-carbazole, 6-(9H-carbazo-9-yl)-9-octylcarbazole substituents were obtained via Sonogashira cross-coupling reaction and thoroughly characterized. DSC measurements demonstrated that prepared terpyridine derivatives are molecular glasses, which exhibited high thermal stability based on TGA analysis. Since they showed high photoluminescence (PL) quantum yields approaching 80% in solution, the electroluminescence ability of the compounds was tested in diodes in a guest-host configuration. Upon dispersing in a matrix consisting of poly(9-vinylcarbazole) (PVK) (50 wt %) and (2-tert-butylphenyl-5-biphenyl-1,3,4-oxadiazole) (PBD) (50 wt %), PL radiation with quantum yields in the range of 22-58% with maximum of emission band from 369 to 459 nm was observed, and the devices showed green or red electroluminescence. The results of the underline substantial role of the functional groups and the linker in the presented terpyridines in terms of their thermal, electrochemical, optical and electroluminescence properties. In addition, density functional theory (DFT) and time-dependent-density functional theory (TD-DFT) calculations were performed to provide a deeper understanding of the experimental results.

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Spectral characterizations and photophysical properties of one-step synthesized blue fluorescent 4′-aryl substituted 2,2′:6′,2′′-terpyridine for OLEDs application

Cited by 19 publications

References 42 publications

Zinc‐Terpyridine Based Chemosensor for Detection of Pyrophosphate Anion in Aqueous Medium

Zinc‐Terpyridine Based Chemosensor for Detection of Pyrophosphate Anion in Aqueous Medium

A Review on the Milestones of Blue Light-Emitting Materials in India

Highly Luminescent 4′‐(4‐ethynylphenyl)‐2,2’:6’,2’’‐Terpyridine Derivatives as Materials for Potential Applications in Organic Light Emitting Diodes

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