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Combined Liposome-Gold Nanoparticles from Honey: The Catalytic Effect of Cassyopea ® Gold on the Thermal Isomerization of a Resonance-Activated Azobenzene.

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  • المؤلفون: Angelini G;Angelini G; Gasbarri C; Gasbarri C
  • المصدر:
    Molecules (Basel, Switzerland) [Molecules] 2024 Aug 23; Vol. 29 (17). Date of Electronic Publication: 2024 Aug 23.
  • نوع النشر :
    Journal Article
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 100964009 Publication Model: Electronic Cited Medium: Internet ISSN: 1420-3049 (Electronic) Linking ISSN: 14203049 NLM ISO Abbreviation: Molecules Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: Basel, Switzerland : MDPI, c1995-
    • الموضوع:
      Gold*/chemistry ; Metal Nanoparticles*/chemistry ; Liposomes*/chemistry ; Honey* ; Azo Compounds*/chemistry; Catalysis ; Isomerism ; Kinetics
    • نبذة مختصرة :
      Gold nanoparticles (AuNPs) have been synthesized directly inside liposomes using honey as a reducing agent. The obtained aggregates, named Cassyopea ® Gold due to the method used for their preparation, show remarkable properties as reactors and carriers of the investigated AuNPs. A mean size of about 150 nm and negative surface charge of -46 mV were measured for Cassyopea ® Gold through dynamic light scattering and zeta potential measurements, respectively. The formation of the investigated gold nanoparticles into Cassyopea ® liposomes was spectroscopically confirmed by the presence of their typical absorption band at 516 nm. The catalytic activity of the combined liposome-AuNP nanocomposites was tested via the thermal cis-trans isomerization of resonance-activated 4-methoxyazobenzene (MeO-AB). The kinetic rate constants ( k obs ) determined at 25 °C in the AuNP aqueous solution and in the Cassyopea ® Gold samples were one thousand times higher than the values obtained when performing MeO-AB cis-trans conversion in the presence of pure Cassyopea ® . The results reported herein are unprecedented and point to the high versatility of Cassyopea ® as a reactor and carrier of metal nanoparticles in chemical, biological, and technological applications.
    • Contributed Indexing:
      Keywords: 4-methoxyazobenzene; catalytic activity; cis–trans isomerization; gold nanoparticles; honey; liposomes; surface charge; sustainability
    • الرقم المعرف:
      7440-57-5 (Gold)
      0 (Liposomes)
      0 (Azo Compounds)
      F0U1H6UG5C (azobenzene)
    • الموضوع:
      Date Created: 20240914 Date Completed: 20240914 Latest Revision: 20240914
    • الموضوع:
      20240914
    • الرقم المعرف:
      10.3390/molecules29173998
    • الرقم المعرف:
      39274846