Isolation and characterization of precise dye/dendrimer ratios.
Isolation and characterization of precise dye/dendrimer ratios.
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DOI:
10.1002/chem.201304854
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发表时间:
2014-04-14
影响因子:
4.3
通讯作者:
DiMaggio, Stassi
中科院分区:
文献类型:
--
作者:
Dougherty, Casey A.;Furgal, Joseph C.;van Dongen, Mallory A.;Goodson, Theodore, III;Holl, Mark M. Banaszak;Manono, Janet;DiMaggio, Stassi
Fluorescent dyes are commonly conjugated to nanomaterials for imaging applications using stochastic synthesis conditions that result in a Poisson distribution of dye/particle ratios and therefore a broad range of photophysical and biodistribution properties. We report the isolation and characterization of generation 5 poly(amidoamine) (G5 PAMAM) dendrimer samples containing 1, 2, 3, and 4 fluorescein (FC) or 6-carboxytetramethylrhodamine succinimidyl ester (TAMRA) dyes per polymer particle. For the fluorescein case, this was achieved by stochastically functionalizing dendrimer with a cyclooctyne `click' ligand, separation into sample containing precisely defined `click' ligand/particle ratios using reverse-phase high performance liquid chromatography (rp-HPLC), followed by reaction with excess azide-functionalized fluorescein dye. For the TAMRA samples, stochastically functionalized dendrimer was directly separated into precise dye/particle ratios using rp-HPLC. These materials were characterized using 1H and 19F NMR, rp-HPLC, UV-Vis and fluorescence spectroscopy, lifetime measurements, and MALDI.
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影响因子:
17.1
作者:
Mullen DG;Fang M;Desai A;Baker JR;Orr BG;Banaszak Holl MM
通讯作者:
Banaszak Holl MM
影响因子:
4.7
作者:
Mullen, Douglas G.;Desai, Ankur M.;Holl, Mark M. Banaszak
通讯作者:
Holl, Mark M. Banaszak
影响因子:
2.1
作者:
Balzani, V;Ceroni, P;Vögtle, F
通讯作者:
Vögtle, F
影响因子:
4.3
作者:
Ornelas, Catia;Lodescar, Rachelle;Weck, Marcus
通讯作者:
Weck, Marcus
影响因子:
5.2
作者:
Ornelas, Catia;Pennell, Ryan;Weck, Marcus
通讯作者:
Weck, Marcus