Dual emission fluorescence/room-temperature phosphorescence of phenothiazine and benzotrifluoride derivatives and its application for optical sensing of oxygen

Keruckienė, Rasa; Volyniuk, Dmytro; Leitonas, Karolis

doi:10.1016/j.snb.2020.128533

Cited by 36 publications

(16 citation statements)

References 52 publications

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“…The lifetime of long wavelength emission also decreased gradually as temperature increased in both THF and CH 2 Cl 2 . Such a result indicated that the long wavelength emission possesses a typical phosphorescence character other than thermally activated delayed fluorescence (TADF). − …”

Section: Resultsmentioning

confidence: 99%

Millisecond Time-scale Photoluminescence of B–N-doped Tetrathienonaphthalene with Borane/Amine Substituents

Sun

Meng

et al. 2020

Inorg. Chem.

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BN-doped polycyclic aromatic hydrocarbons (PAHs) have attracted numerous attentions because of their fascinating optical and electronic properties. In this work, a series of electron-donor (amine)- and -acceptor (borane)-functionalized BN-doped polycyclic aromatic hydrocarbons were prepared to study the substituents’ effect on the photophysical properties. As a result, the compound with both donor and acceptor, BN, exhibits both local emission (LE) and charge-transfer emission (CT) in polar solvents. Especially, the CT emission with a longer wavelength revealed a lifetime as long as millisecond time scale at room temperature, indicating typical phosphorescence characteristics. Low-temperature photoluminescent (PL) spectroscopy and a theoretical study were conducted to help to interpret this phenomenon, and it turned out to be the lowering of the S1 energy level of BN which makes the intersystem crossing favorable. Furthermore, fluoride anion titration experiments exhibit the application potential of the dual-emission phenomenon of BN for ratiometric sensory materials.

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Section: Resultsmentioning

confidence: 99%

Millisecond Time-scale Photoluminescence of B–N-doped Tetrathienonaphthalene with Borane/Amine Substituents

Sun

Meng

et al. 2020

Inorg. Chem.

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“…In recent years, purely organic room-temperature phosphorescence (RTP) has gained increasing research interest because of its inherent advantages including a triplet state, longer lifetime and larger Stokes shift. 1–4 Therefore, RTP materials have been widely explored for potential applications in light-emitting devices, 5–7 biological imaging, 8–12 information encryption, 13–16 chemical sensing, 17–21 etc. However, purely organic molecules also have some disadvantages, such as low efficiency intersystem crossing (ISC), weak spin–orbit coupling, easy non-radiative transition, and collision quenching by oxygen or impurities, leading to hardly effective phosphorescence emission at room temperature.…”

Section: Introductionmentioning

confidence: 99%

A tunable phosphorescence supramolecular switch by an anthracene photoreaction in aqueous solution

Liu

Chen

et al. 2022

J. Mater. Chem. C

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“…It is in line with the fact that phenothiazine is known to be phosphorescent in the 500-700 nm range thanks to the sulfur atom (heavy atom effect). [15] At room temperature the phosphorescence at 515 nm and 558 nm is suppressed and only TADF at 538 nm remains. As known, [16] PTZ has attracted much attention for its feature of TADF.…”

Section: Resultsmentioning

confidence: 99%

Selective Expression of a Carbazole‐Phenothiazine Derivative Leads to Dual‐mode AIEE, TADF and Distinctive Mechanochromism

Hasan

Liu

et al. 2021

ChemPhysChem

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In this article, we report a newly designed DÀ AÀ D' derivative (CNCzPTZ), which displays selective expression of chromophores. This enables CNCzPTZ with solvatochromism, rare dualmode AIEE properties, solid-state dual-emissions with phosphorescence and distinctive mechanochromism.CNCzPTZ exhibits dual-mode AIEE properties, since the emission band abruptly shifts from 550 nm to 500 nm as the water fraction increases. In the crystalline state, CNCzPTZ demonstrated dual emission bands of 478 nm and 538 nm.CNCzPTZ shows distinctive mechanochromic property in the solid state due to the planarization.

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Dual emission fluorescence/room-temperature phosphorescence of phenothiazine and benzotrifluoride derivatives and its application for optical sensing of oxygen

Cited by 36 publications

References 52 publications

Millisecond Time-scale Photoluminescence of B–N-doped Tetrathienonaphthalene with Borane/Amine Substituents

Millisecond Time-scale Photoluminescence of B–N-doped Tetrathienonaphthalene with Borane/Amine Substituents

A tunable phosphorescence supramolecular switch by an anthracene photoreaction in aqueous solution

Selective Expression of a Carbazole‐Phenothiazine Derivative Leads to Dual‐mode AIEE, TADF and Distinctive Mechanochromism

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