167859-41-8

Upstream product

• 53566-95-3 4,4'-diformyltriphenylamine 
• 36809-26-4 4-N,N-diphenylamino-1-bromobenzene 
• 68-12-2 N,N-dimethyl-formamide 
• 603-34-9 N,N-diphenylaminobenzene 

Downstream Products

• 1356245-58-3 C₆₈H₅₄N₄O₄ 
• 1356245-32-3 C₄₀H₂₈Br₂N₂ 
• 1401606-74-3 4-bromo-4',4''-di[(E)(pyrimidin-4-yl)vinyl]triphenylamine 
• 865448-72-2 4,4',4'' ,4'''-([1,1'-biphenyl]-4,4'-diylbis(azanetriyl))tetrabenzaldehyde 
• 1149431-42-4 4-[4-bromo(4-carboxyphenyl)anilino]benzoic acid 

Relevant academic research and scientific papers

Ultrahigh volatile iodine uptake by hollow microspheres formed from a heteropore covalent organic framework

We herein report the construction of a new heteropore COF which consists of two different kinds of micropores with unprecedented shapes. It exists as hollow microspheres and exhibits an extremely high volatile iodine uptake (up to 481 wt%) by encapsulating iodine in the inner cavities and porous shells of the microspheres.

Single-crystal-to-single-crystal guest exchange in columnar assembled brominated triphenylamine bis-urea macrocycles

Self-assembly of brominated triphenylamine bis-urea macrocycles affords robust porous materials. Urea hydrogen bonds organize these building blocks into 1-dimensional columns, which pack via halogen-aryl interactions. The crystals are stable when emptied,

New triphenylamine-based sensitizers bearing double anchor units for dye-sensitized solar cells

Two organic sensitizers (LI-33 and LI-34) with double anchoring units were synthesized and utilized for dye sensitized solar cells (DSSCs), which contained thiophene or vinyl thiophene as π-bridge. The introduction of double anchoring units can change the

Photoinduced processes of newly synthesized bisferrocene- and bisfullerene-substituted tetrads with a triphenylamine central block

Photoinduced electron transfer processes of two newly synthesized tetrads with a triphenylamine (TPA) as central building block, to which bisfullerenes (C60) and bisferrocenes (Fc) are covalently connected, have been studied. One of them has a TPA linked with one C60 moiety and two ferrocene moieties C60-TPA-(Fc)2 and another tetrad has a TPA linked with two C60 moieties and one ferrocene unit (C60)2-TPA-Fc. The photophysical properties of (C60)m-TPA-(Fc)n have been investigated by applying the picosecond time-resolved fluorescence and nanosecond transient absorption techniques in both polar and nonpolar solvents. The charge separation process via the excited singlet state of the C60 moiety of the C60-TPA-(Fc)2 is more efficient than that of the (C60)2-TPA-Fc. It is found that the ratio of Fc-donor to C60-acceptor affects charge separation efficiency via the excited singlet state of the C60 moiety.

Nitric Oxide-Activated "dual-Key-One-Lock" Nanoprobe for in Vivo Molecular Imaging and High-Specificity Cancer Therapy

Cancer treatments are confounded by severe toxic effects toward patients. To address these issues, activatable nanoprobes have been designed for specific imaging and destruction of cancer cells under the stimulation of specific cancer-associated biomarkers. Most activatable nanoprobes were usually activated by some single-factor stimulation, but this restricts therapeutic specificity between diseased and normal tissue; therefore, multifactor activation is highly desired. To this end, we herein develop a novel dual-stimuli responsive theranostic nanoprobe for simultaneously activatable cancer imaging and photothermal therapy under the coactivation of "dual-key" stimulation of "nitric oxide (NO)/acidity", so as to further improve the therapeutic specificity. Specifically, we have integrated a weak electron acceptor (benzo[c][1,2,5]thiadiazole-5,6-diamine) into a donor-π-acceptor-π-donor type chromophore. When the weak acceptor was oxidized by NO in acidic conditions to form a stronger acceptor (5H-[1,2,3]triazolo[4,5-f]-2,1,3-benzothiadiazole), the molecule absorption was significantly increased in the near-infrared region, based on the intramolecular charge transfer (ICT) mechanism. Under the dual-key stimulation of NO/acidity within the tumor associated with inflammation, the nanoprobe can correspondingly output dual signals for ratiometric photoacoustic and photothermal imaging of cancer in vivo and do so with enhanced accuracy and specificity. Our novel nanoprobe exhibited higher photoacoustic signal enhancement under dual-factor activation at 9.8 times that of NO and 132 times that of acidity alone, respectively. Moreover, through such dual activation of NO/acidity, the nanoprobe produces more differentiation of hyperthermia between tumor and normal tissues, to afford satisfactory photothermal therapy with minimal toxic side effects. Thus, our work presents a promising strategy for significantly improving the precision and specificity of cancer imaging and therapy.

Near-infrared two-region fluorescent molecule containing benzobithiadiazole and preparation method thereof, fluorescent nano-particles and preparation method and application thereof

The invention provides a near-infrared two-region fluorescent molecule containing benzobithiadiazole and a preparation method of the near-infrared two-region fluorescent molecule, fluorescent nano-particles and a preparation method and application of the

Guest Inclusion Modulates Concentration and Persistence of Photogenerated Radicals in Assembled Triphenylamine Macrocycles

Substituted triphenylamine (TPA) radical cations show great potential as oxidants and as spin-containing units in polymer magnets. Their properties can be further tuned by supramolecular assembly. Here, we examine how the properties of photogenerated radical cations, intrinsic to TPA macrocycles, are altered upon their self-assembly into one-dimensional columns. These macrocycles consist of two TPAs and two methylene ureas, which drive the assembly into porous organic materials. Advantageously, upon activation the crystals can undergo guest exchange in a single-crystal-to-single-crystal transformation generating a series of isoskeletal host-guest complexes whose properties can be directly compared. Photoinduced electron transfer, initiated using 365 nm light-emitting diodes, affords radicals at room temperature as observed by electron paramagnetic resonance (EPR) spectroscopy. The line shape of the EPR spectra and the quantity of radicals can be modulated by both polarity and heavy atom inclusion of the encapsulated guest. These photogenerated radicals are persistent, with half-lives between 1 and 7 d and display no degradation upon radical decay. Re-irradiation of the samples can restore the radical concentration back to a similar maximum concentration, a feature that is reproducible over several cycles. EPR simulations of a representative spectrum indicate two species, one containing two N hyperfine interactions and an additional broad signal with no resolvable hyperfine interaction. Intriguingly, TPA analogues without bromine substitution also exhibit similar quantities of photogenerated radicals, suggesting that supramolecular strategies can enable more flexibility in stable TPA radical structures. These studies will help guide the development of new photoactive materials.

D-pi-A type small organic molecular dye based on di (4-styrylphenyl) aniline, synthetic method and application thereof

The invention discloses a D-pi-A type small organic molecular dye based on di (4-styrylphenyl) aniline and a synthesis method and application of the D-pi-A type small organic molecular dye. The preparation method comprises the following steps: dispersing

Covalent Organic Framework for Improving Near-Infrared Light Induced Fluorescence Imaging through Two-Photon Induction

Fluorescent materials exhibiting two-photon induction (TPI) are used for nonlinear optics, bioimaging, and phototherapy. Polymerizations of molecular chromophores to form π-conjugated structures were hindered by the lack of long-range ordering in the stru

BICHROMIC BIPODAL TRIPHENYLAMINE-BASED DYES WITH HIGH PHOTO-ELECTRON CONVERSION AT LOW LIGHT INTENSITIES

A bichromic bipodal triphenyl amine based dye of the following formula: (Formula (I)).