Tetracoordinate Boron Materials for Biological Imaging

DeRosa, Christopher A.; Fraser, Cassandra L.

doi:10.1002/9781119235941.ch5

Cited by 9 publications

(4 citation statements)

References 189 publications

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“…Bioimaging using a fluorescent chemical probe is an emerging area of research. Several organic, inorganic, and organometallic probes have been reported for the imaging of cellular organelles and biological processes [86][87][88]. Due to their high demand in non-invasive early disease detection and progression, a number of borylated molecular fluorophores have been reported.…”

Section: Bioimagingmentioning

confidence: 99%

Recent Advances in π-Conjugated N^C-Chelate Organoboron Materials

et al. 2020

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Boron-containing π-conjugated materials are archetypical candidates for a variety of molecular scale applications. The incorporation of boron into the π-conjugated frameworks significantly modifies the nature of the parent π-conjugated systems. Several novel boron-bridged π-conjugated materials with intriguing structural, photo-physical and electrochemical properties have been reported over the last few years. In this paper, we review the properties and multi-dimensional applications of the boron-bridged fused-ring π-conjugated systems. We critically highlight the properties of π-conjugated N^C-chelate organoboron materials. This is followed by a discussion on the potential applications of the new materials in opto-electronics (O-E) and other areas. Finally, attempts will be made to predict the future direction/outlook for this class of materials.

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Section: Bioimagingmentioning

confidence: 99%

Recent Advances in π-Conjugated N^C-Chelate Organoboron Materials

et al. 2020

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“…Boron-containing luminescent materials, − especially four-coordinated boron-containing luminescent materials, − have attracted considerable interest in various fields such as photovoltaics, organic field-effect transistors, light-emitting devices, and sensors owing to their tuneable and strong absorption, emission and stability over three-coordinated boron compounds. − Among the different tetracoordinated boron-containing luminescent materials, boron-β-diketonates have been studied to a greater extent due to their large molar extinction coefficients and high fluorescence quantum yields. Much effort has been paid to tune the photophysical properties of boron-β-diketonates by chemically modifying the π-conjugation via the substituents. ,− For example, Fraser and co-workers explored the substituent effect of boron-β-diketonates and studied them as stimuli-responsive materials, , and Chujo and co-workers described the effect of B–F vs B–aryl. , More recently, Adachi and co-workers demonstrated the use of boron-β-diketonates as NIR emissive materials. , Furthermore, efforts have been made to tune the photophysical properties by replacing one or two of the oxygen atoms present in the diketone moiety.…”

Section: Introductionmentioning

confidence: 99%

Red-Emitting Tetraphenylethylene-Based Boron Thioketonates: Effect of Substitution and Study of Nonlinear Optical Properties

Murali

Nayak

Panda

et al. 2023

ACS Appl. Opt. Mater.

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We present tetraphenylethylene (TPE) and N,N-dimethylaniline (DMA)-substituted monothio-β-diketonate boron compounds. All O,S-chelated boron compounds showed red emission in solution as well as in the solid state. A comparison of O,Ochelated vs O,S-chelated compound reveals that the latter showed a pronounced red shift in both absorption and emission. Furthermore, the O,S-chelated compound showed the reduction potential at a less-negative position over the O,O-chelated compound. The marked red shift in O,S-chelated compounds indicates that there is a discernible enhancement in linear polarizability upon optical excitation, and consequently, we explore the nonlinear optical properties of the compounds at infrared wavelengths. The open-aperture Z-scan measurements using ultrashort pulses reveal the optical-limiting behavior of these compounds along with a greater nonlinear absorption for those variants, which exhibits a greater red shift in absorption and emission spectrum.

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“…Tetra-coordinated boron complexes are a class of materials that have gained attention owing to their greater stability over tri-coordinated boron complexes and wide applications in biological as well as optoelectronic devices. 1–4 Possible ways of obtaining various tetra-coordinated boron complexes with the desired properties are tuning the ligand with different chelates (N,N-; N,O-; N,C-; O,O-; etc. ) and (or) changing the substituents on the boron atom.…”

Section: Introductionmentioning

confidence: 99%