Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Winston Ong"'
Publikováno v:
Journal of the American Chemical Society. 130:14739-14744
An exciting new direction in responsive liposome research is endogenous triggering of liposomal payload release by overexpressed enzyme activity in affected tissues and offers the unique possibility of active and site-specific release. Bringing to fr
Autor:
Winston Ong, Robin L. McCarley
Publikováno v:
Macromolecules. 39:7295-7301
Generations 1−5 of poly(propyleneimine) dendrimers (1−5) terminated with redox-labile, trimethyl-locked quinone (TLQ) end groups were shown to release the TLQ units as lactone 6 upon chemical or el...
Autor:
Winston Ong, Robin L. McCarley
Publikováno v:
Organic Letters. 7:1287-1290
[structure: see text] Two series of poly(propylene imine), PPI, dendrimers terminated with a redox-active donor, 4-dimethylaminobenzyl (4-DMAB), including their respective nondendronized model compounds, are reported. In these two series, a positive
Autor:
Carlos Peinador, Angel E. Kaifer, José María Quintela, Jodi Grindstaff, Rosa Toba, Winston Ong, David Sobransingh
Publikováno v:
ResearcherID
Several new series of dendrimers containing a single redox-active 4,4'-bipyridinium (viologen) residue were synthesized and characterized. In these dendrimers, the viologen group is covalently attached to the apical position of a Newkome- or Frechet-
Autor:
Angel E. Kaifer, Gary A. Baker, Winston Ong, Tom Wilkes, Frank V. Bright, Tracy D. McCarley, Siddarth Pandey, Claudia M. Cardona, Sheila N. Baker, Maureen N. Kane
Publikováno v:
The Journal of Physical Chemistry B. 106:8649-8656
We have used a wide variety of molecular (i.e., nitromethane, acrylamide, N,N‘-dimethylaniline, and methyl iodide) and ionic (iodide and cupric ions) quenchers to assess the relative structural permeabilities of a single, pyrenyl residue attached t
Publikováno v:
Organic Letters. 4:1791-1794
[reaction: see text] The host cucurbit[7]uril (CB7) forms very stable inclusion complexes with simple 4,4'-bipyridinium (viologen) dication guests in aqueous solution. The binding constants were measured by electronic absorption spectroscopy and foun
Publikováno v:
Journal of Supramolecular Chemistry. 1:269-274
Calix[6]arenesulfonate is a flexible host that adopts the 1,2,3-alternate conformation in DMSO- d 6 solution at room temperature, as evidenced by 1 H NMR spectroscopic data. This conformational preference is lost at higher temperatures or in the pres
Publikováno v:
Nano Letters. 1:57-60
Water-soluble gold nanoparticles (3.2 nm diameter) capped with thiolated γ-cyclodextrin hosts form large network aggregates (∼300 nm) in the presence of C60 fullerene molecules. This aggregation phenomenon is driven by the formation of inclusion c
Autor:
Winston Ong, Angel E. Kaifer
Publikováno v:
Organometallics. 22:4181-4183
Ferrocenium and cobaltocenium form highly stable 1:1 inclusion complexes with the host cucurbit[7]uril. From electronic absorption spectroscopic data the association equilibrium constants for both complexes were found to be larger than 106 L/mol. The
Publikováno v:
ResearcherID
The formation of silver nanoparticles in the presence of various macrocyclic thiol compounds in N,N‘-dimethylformamide (DMF) solution was investigated in situ through visible spectrophotometric and photon correlation spectroscopic measurements. Whi