Electroluminescent properties of dimeric bis(2-(2′-hydroxyl phenyl)benzthiazolate)zinc (II) complex

Qureshi, Mohammad; Manoharan, S. Sundar; Singh, Samarendra P.; Mahapatra, Y. N.

doi:10.1016/j.ssc.2004.11.019

Cited by 18 publications

(13 citation statements)

References 17 publications

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“…Zn(NBTz) 2 shows peak at 509 nm and shoulder at 580 nm. The data obtained for PL peaks of Znq 2 and Zn(BTz) 2 are very closed to the results reported by Shukla & Kumar (2010) for Znq 2 (540 nm) and by Qureshi et al (2005) for Zn(BTz) 2 (485 nm). The electroluminescent (EL) spectra of devices PET/ITO/(PVK:TPD) (31 nm) /EML (75 nm) /Al, obtained at different voltages by Ocean Optics HR2000+ spectrometer are shown in Fig.13.…”

Section: Fig 11 the Chemical Structures Of Used Zn Complexessupporting

confidence: 78%

Organic Light Emitting Diodes Based on Novel Zn and Al Complexes

Petrova¹,

Tomova²,

Stoycheva-Topalova³

2011

Organic Light Emitting Diode - Material, Process and Devices

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Section: Fig 11 the Chemical Structures Of Used Zn Complexessupporting

confidence: 78%

Organic Light Emitting Diodes Based on Novel Zn and Al Complexes

Petrova¹,

Tomova²,

Stoycheva-Topalova³

2011

Organic Light Emitting Diode - Material, Process and Devices

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“…Because the aryl groups are attached to the phenoxide part of the ligand, which is believed to contain the HOMO, [8] it is understandable that HOMO energy levels of the benzothiazole will be more affected by the aryl attachement than the LUMO energy levels. Although it was expected that changes to the substituents might also affect the LUMO energy levels, surprisingly the LUMO levels remained largely unaffected for all the Znb 2 derivatives (Figure 2).…”

Section: Electrochemical Studiesmentioning

confidence: 99%

“…[8] Thus, it is possible to increase or decrease the HOMO-LUMO energy gap of Znb 2 by attaching suitable electronwithdrawing or -donating groups either in the phenoxide or in the thiazole ring without changing the core structure. For tuning the emission color and redox potentials of Znb 2 , we present a method that involves the introduction of electronwithdrawing and -donating aryl groups in the 5-position of the benzothiazole ligand, which ultimately modifies the HOMO energy levels and thus the HOMO-LUMO energy gap.…”

Section: Introductionmentioning

confidence: 99%

Electronic Structure Manipulation of (Benzothiazole)zinc Complexes: Synthesis, Optical and Electrochemical Studies of 5‐Substituted Derivatives

et al. 2011

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The electronic properties of bis[2‐(2‐hydroxyphenyl)benzothiazolato]zinc(II) complexes were tuned by attachment of electron‐withdrawing and ‐donating aryl groups through the Suzuki–Miyaura coupling reaction. Optimization studies of the borylation reaction and Suzuki coupling of protected benzothiazoles were performed to maximize the yields of the target compounds. The absorption, emission, and electrochemical properties of the newly synthesized complexes were found to correlate to the electronic nature of the attached aryl group. Whereas the LUMO levels are less dependent on the substituents, the HOMO levels are very sensitive to the nature of the substituent, thus providing an array of organometallic complexes with gradual changes in redox potentials.

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“…The optical properties of analogous derivatives of benzothiazole are relatively less explored, which leaves scope for further study [8][9][10][11][12][13]. Among them, the hydroxybenzothiazoles are of special interest as presence of OH-group along with a ring containing nitrogen and sulphur atoms at two side of the heterocyclic ring can control coordination modes in a tuneable manner.…”

Section: Introductionmentioning

confidence: 99%