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- W2034891437 abstract "We report self-assembled polymeric nanovesicles composed of 1,4-bis{4′-[N,N-bis(6′′-trimethylammoniumhexyl)amino]styryl}benzene tetrabromide (C1), poly[(ethylene oxide)-block-(sodium 2-acrylamido-2-methyl-1-propane sulfonate)] (Em-An), and hexadecyltrimethylammonium bromide (C16). Transmission electron microscopy (TEM) micrographs confirm the vesicular bilayer structures and atomic force microscopy (AFM) images show that the C1/Em-An/C16 complexes form spherical nanostructures with a particle size ranging from 40 to 80 nm. The encapsulation of C1 inside the nanovesicles enhances ∼2-fold the fluorescence quantum yield (η) and two-photon action cross-section (ηδ, where δ is the two-photon absorption cross-section), and allows internalization into the cells, as revealed by the bright two-photon microscopy (TPM) images of human cervical epithelioid carcinoma (HeLa) cells labeled with the nanovesicles. Moreover, nanovesicles containing a chemotherapeutic drug and a neutral molecule can also be prepared. Furthermore, the C1/vesicular complex is disassembled under acidic conditions, highlighting its potential as a pH-responsive smart nanocarrier for the intracellular drug delivery. These results suggest a new possibility of using nanovesicles as efficient two-photon probes for TPM imaging and possibly as nanocarriers for intracellular drug delivery." @default.
- W2034891437 created "2016-06-24" @default.
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- W2034891437 date "2012-01-01" @default.
- W2034891437 modified "2023-10-18" @default.
- W2034891437 title "pH-responsive water soluble smart vesicles containing a bis(styryl)benzene derivative for two-photonmicroscopy imaging" @default.
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- W2034891437 doi "https://doi.org/10.1039/c1jm14693a" @default.
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