Isolation and characterization of precise dye/dendrimer ratios.

Isolation and characterization of precise dye/dendrimer ratios.
复制标题

DOI:
10.1002/chem.201304854
复制
发表时间:
2014-04-14
影响因子:
4.3
通讯作者:
DiMaggio, Stassi
DiMaggio, Stassi
中科院分区:
化学2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

文献摘要

参考文献

被引文献

相似文献

荧光染料通常与纳米材料结合,用于成像应用,使用随机合成条件,导致染料/颗粒比的泊松分布,因此具有广泛的光物理和生物分布特性。我们报道了第5代聚氨基胺(G5 PAMAM)枝状大分子样品的分离和表征,每个聚合物颗粒含有1,2,3和4荧光素(FC)或6-羧基四甲基罗丹明琥珀酰氨基酯(TAMRA)染料。对于荧光素,这是通过随机功能化树状大分子与环辛基“点击”配体,分离成样品包含精确定义的“点击”配体/颗粒比使用反相高效液相色谱(rp-HPLC),然后反应过量叠氮功能化荧光素染料实现的。对于TAMRA样品,随机功能化的树状大分子使用反相高效液相色谱直接分离成精确的染料/颗粒比例。通过1H和19F NMR, rp-HPLC, UV-Vis和荧光光谱,寿命测量和MALDI对这些材料进行了表征。
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.
DOI: 10.1021/nn900999c
发表时间: 2010-02-23
期刊: ACS nano
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
DOI: 10.1021/bc8002106
发表时间: 2008-09-01
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
DOI: 10.1016/s0040-4020(01)01094-8
发表时间: 2002-01-21
期刊: TETRAHEDRON
影响因子: 2.1
作者:
Balzani, V;Ceroni, P;Vögtle, F
通讯作者: Vögtle, F
DOI: 10.1002/chem.201002268
发表时间: 2011-03-01
影响因子: 4.3
作者:
Ornelas, Catia;Lodescar, Rachelle;Weck, Marcus
通讯作者: Weck, Marcus
DOI: 10.1021/ol103019z
发表时间: 2011-03-04
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Ornelas, Catia;Pennell, Ryan;Weck, Marcus
通讯作者: Weck, Marcus