David Baumann

HPO, in Collaboration with Eastman, Announces Upcoming Launch of High Energy Visible Light Filtering Film in the Transportation Space

March 16, 2023 10:15 AM Eastern Daylight Time CHARLOTTE, N.C.–(BUSINESS WIRE)–Eastman and High Performance Optics, Inc. (HPO) announced today that a selective High Energy Visible Light (HEVL) filtering window film for the transportation industry will be launched in Asia. Selective HEVL filtering has been the optimal solution in filtering undesirable “blue light” from human eyes […]

HPO, in Collaboration with Eastman, Announces Upcoming Launch of High Energy Visible Light Filtering Film in the Transportation Space Read More »

Frontier Specialty Chemicals develops and provides process to produce active pharmaceutical ingredient for clinical trial of COVID-19 therapeutic investigational drug RBT-9

Frontier Specialty Chemicals develops and provides process to produce active pharmaceuticalingredient for clinical trial of COVID-19 therapeutic investigational drug RBT-9 June 23, 2020 | Press Release Link to Story on KSLTV: ―Renibus Therapeutics Will Conduct Phase 2 Trial of Compound with Antiviral andImmune-Modulating Activity to treat effects of COVID-19 ― Logan, UT – June 23,

Frontier Specialty Chemicals develops and provides process to produce active pharmaceutical ingredient for clinical trial of COVID-19 therapeutic investigational drug RBT-9 Read More »

Spectroscopic Study of Porphyrin Self-Assembly: Role of pH, Time and Chiral Template

The Mammana group at the University of Dayton recently reported the self assembly of charged porphyrins onto a chiral substrate in the Journal Chirality. Charged water soluble porphyrins were used to produce chiral self-assembled structures by templating on to  the chiral templates D or L polyglutamic acid.  The negatively charged porphyrin, meso-Tetra(4-sulfonatophenyl)porphine  cat. No. T1239,

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Pheophorbide-phenazinium conjugate as a fluorescent light-up probe for G-quadruplex structure

Olga A. Ryazanova, et. al. recently reported the synthesis and evaluation of a pheophorbide a phenazinium dye conjugate which is effective as a probe for G-quadruplex structures of nucleic acids. The fluorescence band of the aminophenazinium dye overlaps with the absorption band of pheophorbide a , resulting in the quenching of the phenazinium moiety by

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Pyridinium porphyrins and AuNPs mediated bionetworks as SPR signal amplification tags for the ultrasensitive assay of brain natriuretic peptide.

Recent work at Shanghai University by the Chen group was published in Microchimica Acta reporting a surface plasmon resonance biosensor for the determination of brain natriuretic peptide. Detection was accomplished by binding of the peptide to an amine functionalized aptamer probe. Pyridinium porphyrin-mediated Au nanoparticle composites were used to amplify the SPR signal. Thanks for

Pyridinium porphyrins and AuNPs mediated bionetworks as SPR signal amplification tags for the ultrasensitive assay of brain natriuretic peptide. Read More »

Porphyrin loaded TyroSpheres for the intracellular delivery of drugs and photo-induced oxidant species.

Cat. No: D40922 Cat. No: T40637 TyroSphere nanoparticles consisting of the triblock polymer [poly(ethyleneglycol)-block-oligio(desaminotyrosine octyl ester suberate)-block -poly(ethyleneglycol)] aggregates were loaded with amphiphilic porphyrins as reported by Tsubone, et al. Meso-cis-di(N-methyl-4-pyridyl)diphenylporphine dichloride Cat. No: D40922 , which is a positively charged porphyrin and meso-cis-di(4-sulfonatophenyl)-diphenylporphine dihydrochloride Cat. No: T40637, a negatively charged porphyrin were used. The

Porphyrin loaded TyroSpheres for the intracellular delivery of drugs and photo-induced oxidant species. Read More »

Biomimetic Sensor based on Mn(III) meso-tetra(N-methyl-4-pyridyl)porphyrin for non-enzymatic electrocatalytic determination of hydrogen peroxide…

Transition metal porphyrin complexes immobilized on glassy carbon electrode surfaces were demonstrated by Peng, et al., to act as electrochemical sensors for the detection of hydrogen peroxide and glucose. Mn(III) meso-Tetra (N-methyl-4-pyridyl) porphine pentachloride, catalog number T40809 was found to have the lowest detection limits for hydrogen peroxide and glucose in human serum, demonstrating the

Biomimetic Sensor based on Mn(III) meso-tetra(N-methyl-4-pyridyl)porphyrin for non-enzymatic electrocatalytic determination of hydrogen peroxide… Read More »

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