Literature DB >> 34202308

Effect of Serum Albumin on Porphyrin-Quantum Dot Complex Formation, Characteristics and Spectroscopic Analysis.

André L S Pavanelli1, Leandro N C Máximo2, Roberto S da Silva3, Iouri E Borissevitch1.   

Abstract

The effect of bovine serum albumin (BSA) upon interaction between CdTe QD functionalized by 3-Mercaptopropionic Acid (CdTe-3-MPA QD) and two water soluble porphyrins: positively charged meso-tetra methyl pyridyl porphyrin (TMPyP) and negatively charged meso-tetrakis(p-sulfonato-phenyl) porphyrin (TPPS4), was studied in function of pH using the steady-state and time resolved optical absorption and fluorescence spectroscopies. It was shown that, depending on the charge state of the components, interaction with albumin could either prevent the formation of the QD…PPh complex, form a mixed QD…PPh…BSA complex or not affect PPh complexation with QD at all. The obtained results may be of interest for application in photomedicine.

Entities:  

Keywords:  CdTe-3-MPA quantum dot; TPPS4 and TMPyP porphyrins; bovine serum albumin effects; pH effect; quantum dot-porphyrin complex

Year:  2021        PMID： 34202308     DOI： 10.3390/nano11071674

Source DB:  PubMed          Journal:  Nanomaterials (Basel)        ISSN： 2079-4991            Impact factor:   5.076


  19 in total

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9.  Fluorescence energy transfer in quantum dot/azo dye complexes in polymer track membranes.

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