Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Preparation of Metalloporphyrin-Bound Superparamagnetic Silica Particles via 'Click' Reaction. |
| Συνεισφορές: |
Hollingsworth, Javoris V (authoraut), Bhupathiraju, N V S Dinesh K (authoraut), Sun, Jirun (authoraut), Lochner, Eric (authoraut), Vicente, M Graça H (authoraut), Russo, Paul S (authoraut) |
| Έτος έκδοσης: |
2016 |
| Συλλογή: |
Florida State University: DigiNole Commons |
| Θεματικοί όροι: |
Alkynes/chemistry, Azides/chemistry, Click Chemistry/methods, Emulsions/chemistry, Ferric Compounds/chemistry, Magnetite Nanoparticles/chemistry, Magnetite Nanoparticles/ultrastructure, Metalloporphyrins/chemical synthesis, Metalloporphyrins/chemistry, Nanocomposites/chemistry, Photoelectron Spectroscopy, Silicon Dioxide/chemistry, Spectroscopy, Fourier Transform Infrared, Temperature, Thermogravimetry, X-Ray Diffraction, Zinc/chemistry |
| Περιγραφή: |
A facile approach using click chemistry is demonstrated for immobilization of metalloporphyrins onto the surface of silica-coated iron oxide particles. Oleic-acid stabilized iron oxide nanocrystals were prepared by thermal decomposition of iron(III) acetylacetonate. Their crystallinity, morphology, and superparamagnetism were determined using X-ray diffraction, transmission electron microscopy, and a superconducting quantum interference device. Monodisperse core-shell particles were produced in the silica-coating of iron oxide via microemulsion synthesis. Surface modification of these particles was performed in two steps, which included the reaction of silica-coated iron oxide particles with 3-bromopropyltrichlorosilane, followed by azido-functionalization with sodium azide. Monoalkylated porphyrins were prepared using the Williamson ether synthesis of commercially available tetra(4-hydroxyphenyl) porphyrin with propargyl bromide in the presence of a base. (1)H NMR and matrix-assisted laser desorption ionization confirmed the identity of the compounds. The prepared monoalkyne porphyrins were zinc-metalated prior to their introduction to azide-functionalized, silica-coated iron oxide particles in the click reaction. X-ray photoelectron spectroscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy were used to characterize the surface chemistry after each step in the reaction. In addition, particle size was determined using dynamic light scattering and microscopy. The presented methodology is versatile and can be extended to other photoreactive systems, such as phthalocyanines and boron-dipyrromethane, which may lead to new materials for optical, photonic, and biological applications. ; Keywords: Click chemistry, Iron oxide, Metalloporphyrin, Silica, Superparamagnetic ; Grant Number: R01 CA179902, U01 DE023752 ; Publication Note: This NIH-funded author manuscript originally appeared in PubMed Central at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4893945. |
| Τύπος εγγράφου: |
article in journal/newspaper |
| Περιγραφή αρχείου: |
1 online resource; computer |
| Γλώσσα: |
English |
| Relation: |
ACS applied materials & interfaces--1944-8252--1944-8252; fsu:620933; (IID) FSU_pmch_26691852; (DOI) 10.1021/acsami.5b10034; (PMCID) PMC4893945; (RID) 26691852; (EID) 26691852 |
| Διαθεσιμότητα: |
https://repository.lib.fsu.edu/islandora/object/fsu%3A620933/datastream/TN/view/Preparation%20of%20Metalloporphyrin-Bound%20Superparamagnetic%20Silica%20Particles%20via%20%22Click%22%20Reaction.jpg |
| Αριθμός Καταχώρησης: |
edsbas.2D42C12C |
| Βάση Δεδομένων: |
BASE |
