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Videos de Conceptos Relacionados

The Phosphorus Cycle01:21

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
Phosphorylation01:02

Phosphorylation

The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Phosphorylation01:02

Phosphorylation

The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Phosphodiester Linkages01:01

Phosphodiester Linkages

Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...

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Video Experimental Relacionado

Updated: Jun 15, 2026

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
08:21

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

El fósforo también puede ser una "fotocopia".

Marlena P Washington1, Vittal B Gudimetla, Feng L Laughlin

  • 1Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA.

Journal of the American Chemical Society
|March 19, 2010
PubMed
Resumen

Los investigadores sintetizaron nuevos compuestos de benzoxafosfolos y benzobisoxafosfolos que exhiben fluorescencia azul. Estos materiales que contienen fósforo muestran potencial para electrónica orgánica conjugada avanzada debido a sus enlaces únicos P-C pi.

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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

Videos de Experimentos Relacionados

Last Updated: Jun 15, 2026

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
08:21

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

Área de la Ciencia:

  • Química orgánica es la química orgánica.
  • Ciencia de los materiales Ciencia de los materiales.
  • La fotoquímica es la fotoquímica.

Sus antecedentes:

  • Los benzoxafosfolos son compuestos heterocíclicos con aplicaciones potenciales en la ciencia de los materiales.
  • El desarrollo de nuevas moléculas orgánicas conjugadas con propiedades fotofísicas sintonizables es un área activa de investigación.

Objetivo del estudio:

  • Para sintetizar nuevos derivados de benzoxafosfolos y benzobisoxafosfolos.
  • Para investigar sus propiedades de fotoluminiscencia, particularmente la fluorescencia azul.
  • Para caracterizar la estructura y la unión de estos nuevos compuestos que contienen fósforo.

Principales métodos:

  • Síntesis química de los benzoxafosfolos y los benzobisoxafosfolos utilizando el precursor de la 2,5-difosfinohidroquinona.
  • Caracterización completa de compuestos sintetizados, incluida la cristalografía de rayos X para la determinación estructural.
  • Mediciones de rendimiento cuántico de la fotoluminiscencia para cuantificar la eficiencia de la fluorescencia.

Principales resultados:

  • Síntesis exitosa de nuevos compuestos de benzoxafosfolos y benzobisoxafosfolos.
  • Demostración de la fluorescencia azul en las benzobisoxafosfolas sintetizadas.
  • Elucidación estructural del 2,6-tert-butilbenzo [1,2-d;4,5-d\] bisosafósforo.
  • Determinación del rendimiento cuántico de la fotoluminiscencia para la serie.

Conclusiones:

  • Los nuevos benzobisoxafosfolos, derivados de la 2,5-difosfinohidroquinona, exhiben una fluorescencia azul.
  • Estos compuestos poseen enlaces P-C p-p pi, lo que los hace adecuados para materiales conjugados.
  • El átomo de fósforo puede participar en la conjugación, lo que permite a estos materiales imitar las propiedades de otras moléculas orgánicas conjugadas.