A near-infrared fluorescent probe for H2S based on tandem reaction to construct iminocoumarin-benzothiazole and its application in food, water, living cells

Zhong, Keli; He, Yuqing; Deng, Longlong; Yan, Xiaomei; Li, Xuepeng; Tang, Yiwei; Hou, Shuhua; Tang, Lijun

doi:10.1016/j.aca.2020.06.050

Cited by 42 publications

(20 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…where G( f ) is a resonant function related with the device geometry, which is expressed as a diffraction function determined by the gap of grating, a (the first term in second line); 31 λ is wavelength; and C 0 is a constant. As one can see, our experimental results can be well fitted into equation (1). We consider that the modified Fowler's model in this work is applicable to calculate the spectral photoresponse in gratinglike plasmonic nanostructures.…”

mentioning

confidence: 59%

“…Near infrared (NIR) photodetectors (PDs) are widely applied in environmental surveillance, non-invasive therapies, food inspections and astronomy. [1][2][3][4] Highly efficient NIR-PDs are normally fabricated from narrow band gap semiconductors and pyroelectric materials. [5][6][7] Limited by the working mechanisms (photon absorption by either band edge absorption or thermally driving dipole moment realignment), the photoresponse spectra of such PDs are broadband.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Hot-electron photocurrent detection of near-infrared light based on ZnO

Hou

Liang

Tang

et al. 2021

Applied Physics Letters

View full text Add to dashboard Cite

We demonstrate an unconventional near-infrared photodetector fabricated from a ZnO chip with a metallic subwavelength grating structure as a contact and optical window, which harvests hot electrons generated by plasmonic resonances introduced by incident light. The grating structure has a strong selection of the polarization of incident light, meaning that the detector is naturally polarization-sensitive. In our device, the polarization extinction ratio is as high as 64:1, much higher than that relying on crystal orientations. Since the photoresponse is introduced by plasmonic resonance, a narrow photoresponse spectrum with a linewidth of 32.1 nm at 1.201 μm is obtained. By simply changing the grating period, the spectral position can be tailored freely within the near-infrared region, i.e., wavelength-selective. Such a spectral response is not likely to be realized with conventional semiconductor photodetectors, which depend on the band edge absorption. We propose a modified Fowler's model, which well explains the line shape of photoresponse spectra of such devices.

show abstract

mentioning

confidence: 59%

mentioning

confidence: 99%

Hot-electron photocurrent detection of near-infrared light based on ZnO

Hou

Liang

Tang

et al. 2021

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…Probe 14 was synthesized by the Knoevenagel condensation reaction of tetrahydroquinoxaline-6-formaldehyde derivative and 2-benzothiazoleacetonitrile . H 2 S triggers C–O bond cleavage of 14 .…”

Section: Small-molecule-based Nir Probesmentioning

confidence: 99%

“…Probe 14 was synthesized by the Knoevenagel condensation reaction of tetrahydroquinoxaline-6-formaldehyde derivative and 2-benzothiazoleacetonitrile. 67 H 2 S triggers C−O bond cleavage of 14. Subsequently, phenolate attacks the α,βunsaturated nitrile moiety by intramolecular cyclization to yield 1,4-diethylpiperazine-modified iminocoumarin benzothiazole (ICBT) fluorophore.…”

mentioning

confidence: 99%

Sensing and Bioimaging of the Gaseous Signaling Molecule Hydrogen Sulfide by Near-Infrared Fluorescent Probes

et al. 2020

View full text Add to dashboard Cite

A fluorescent probe for the monitoring of H 2 S levels in living cells and organisms is highly desirable. In this regard, nearinfrared (NIR) fluorescent probes have emerged as a promising tool. NIR-I and NIR-II probes have many significant advantages; for instance, NIR light penetrates deeper into tissue than light at visible wavelengths, and it causes less photodamage during biosample analysis and less autofluorescence, enabling higher signal-to-background ratios. Therefore, it is expected that fluorescent probes having emission in the NIR region are more suitable for in vivo imaging. Consequently, a considerable increase in reports of new H 2 Sresponsive NIR fluorescent probes appeared in the literature. This review highlights the advances made in developing new NIR fluorescent probes aimed at the sensitive and selective detection of H 2 S in biological samples. Their applications in real-time monitoring of H 2 S in cells and in vivo for bioimaging of living cells/animals are emphasized. The selection of suitable dyes for designing NIR fluorescent probes, along with the principles and mechanisms involved for the sensing of H 2 S in the NIR region, are described. The discussions are focused on small-molecule and nanomaterialsbased NIR probes.

show abstract

“…这些方法在一定条件下能够满足测定的要求, 但是也存在明显的缺陷, 如需对样品进行复杂的前处理、测试速度慢、仪器昂贵成本高及需要熟练的操作人员等, 因此急需开发新方法来检测 Pd 2＋ . 目前, 荧光光谱法由于具有灵敏度高、选择性好、操作简便和成本低等特点, 受到了广大研究者的青睐 [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] . 基于香豆素、罗丹明等多种结构用来检测 Pd 2＋的荧光探针已被开发, 获得了较好的效果 [29][30][31][32][33][34][35][36][37][38] .…”

unclassified

Synthesis of 2-(3-Cyanofuran-2(5H)-ylidene)malononitrile Derivative and Its Recognition for Pd²⁺

Zhong¹,

Zhou²,

Chen³

et al. 2021

Chinese Journal of Organic Chemistry

Self Cite

View full text Add to dashboard Cite

Pyn, 该化合物在 MeCN/磷酸缓冲容溶液(PBS) (V∶V＝2∶8, PBS 2×10 -2 mol/L, pH＝7.4)混合溶液中能高选择性荧光"OFF-ON"识别 Pd 2＋ , 发射波长达到近红外区(653 nm). 该探针具有较好的抗干扰能力、较宽的 pH 适用范围(3～8)和较低的检测限(6.92 μmol/L). 应用研究表明, TCF-Pyn 能检测真实水样中的 Pd 2＋ , 并可对活细胞中的 Pd 2＋进行荧光成像.

show abstract

A near-infrared fluorescent probe for H2S based on tandem reaction to construct iminocoumarin-benzothiazole and its application in food, water, living cells

Cited by 42 publications

References 59 publications

Hot-electron photocurrent detection of near-infrared light based on ZnO

Hot-electron photocurrent detection of near-infrared light based on ZnO

Sensing and Bioimaging of the Gaseous Signaling Molecule Hydrogen Sulfide by Near-Infrared Fluorescent Probes

Synthesis of 2-(3-Cyanofuran-2(5H)-ylidene)malononitrile Derivative and Its Recognition for Pd²⁺

Contact Info

Product

Resources

About

A near-infrared fluorescent probe for H2S based on tandem reaction to construct iminocoumarin-benzothiazole and its application in food, water, living cells

Cited by 42 publications

References 59 publications

Hot-electron photocurrent detection of near-infrared light based on ZnO

Hot-electron photocurrent detection of near-infrared light based on ZnO

Sensing and Bioimaging of the Gaseous Signaling Molecule Hydrogen Sulfide by Near-Infrared Fluorescent Probes

Synthesis of 2-(3-Cyanofuran-2(5H)-ylidene)malononitrile Derivative and Its Recognition for Pd2+

Contact Info

Product

Resources

About

Synthesis of 2-(3-Cyanofuran-2(5H)-ylidene)malononitrile Derivative and Its Recognition for Pd²⁺