Fluorescent Labels: Versatile Tools for Studying the Association of Amphiphilic Polymers in Water

2000 ◽  
pp. 286-302
Author(s):  
Françoise M. Winnik ◽  
Sudarshi T. A. Regismond ◽  
Dan F. Anghel
Keyword(s):  
Amphiphilic Polymers ◽  
Fluorescent Labels

A New Method for the Synthesis of Heptamethine Cyanine Dyes:  Synthesis of New Near Infrared Fluorescent Labels

1997 ◽  
Vol 62 (26) ◽  
pp. 9387-9387 ◽  
Author(s):  
Narasimhachari Narayanan ◽  
Lucjan Strekowski ◽  
Malgorzata Lipowska ◽  
Gabor Patonay
Keyword(s):  
Near Infrared ◽  
Cyanine Dyes ◽  
New Method ◽  
Fluorescent Labels

Recent Applications of Nonradiative Energy Transfer to Polymer Studies

1993 ◽  
Vol 58 (10) ◽  
pp. 2266-2271 ◽  
Author(s):  
Herbert Morawetz
Keyword(s):  
Energy Transfer ◽  
Polymer Chain ◽  
Cluster Formation ◽  
Nonradiative Energy Transfer ◽  
Molecular Cluster ◽  
Fluorescent Labels ◽  
Latex Particles ◽  
Polymer Latex

Recent studies of polymers in solution and in bulk by energy transfer between two fluorescent labels are reviewed. Such studies are concerned with the equilibrium and dynamics of polymer chain expansion, molecular cluster formation in solution, the miscibility of polymers in bulk, and the interdiffusion of polymer latex particles.

scholarly journals Effect of Molecular Architecture on Associating Behavior of Star-Like Amphiphilic Polymers Consisting of Plural Poly(ethylene oxide) and One Alkyl Chain

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 460
Author(s):  
Daisuke Kugimoto ◽  
Aoi Taniguchi ◽  
Masaki Kinoshita ◽  
Isamu Akiba
Keyword(s):  
Ethylene Oxide ◽  
Average Molecular Weight ◽  
Amphiphilic Polymers ◽  
Hydrophobic Core ◽  
Molecular Architecture ◽  
Polymer Micelles ◽  
The Core ◽  
X Ray Scattering ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Associating behavior of star-like amphiphilic polymers consisting of two or three poly(ethylene oxide) (PEO) chains and one stearyl chain (C18) was investigated. Although the aggregation number (Nagg) of linear analogue of amphiphilic polymers monotonically decreased with increasing number-average molecular weight of PEO (Mn,PEO), the Nagg of micelles of star-like amphiphilic polymers with Mn,PEO = 550 g/mol was smaller than that with Mn,PEO = 750 g/mol, whereas that with Mn,PEO ≥ 750 g/mol showed general Mn,PEO dependence. Small-angle X-ray scattering analyses revealed that the occupied area of one PEO chain on the interface between hydrophobic core and corona layer in the micelles of star-like polymers was much narrower than that in the linear amphiphilic polymers. This result indica ted the PEO chains of star-like polymers partially took unfavorable conformation near the core–corona interface in polymer micelles. The effect of local conformation of PEO chains near the interface on the associating behavior became significant as Mn,PEO decreased. Therefore, in polymer micelles of star-like amphiphilic polymers containing PEO with Mn,PEO = 550 g/mol, the enlargement of occupied area of PEO on the core–corona interface should be caused to avoid the formation of unfavorable conformations of partial PEO chains, resulting in a decrease in Naggs.

Aminoquinolines as fluorescent labels for hydrophilic interaction liquid chromatography of oligosaccharides

2012 ◽  
Vol 393 (8) ◽  
pp. 757-765 ◽  
Author(s):  
Weston B. Struwe ◽  
Pauline M. Rudd
Keyword(s):  
Liquid Chromatography ◽  
Hplc Analysis ◽  
Three Dimensional ◽  
Hydrophilic Interaction Liquid Chromatography ◽  
Peak Capacity ◽  
Fluorescent Labels ◽  
Sample Analysis ◽  
Hydrophilic Interaction ◽  
Optimal Excitation ◽  
Complex Sample

Abstract In this study, we investigated the potential of four different aminoquinoline (AQ) compounds as fluorescent labels for glycan analysis using hydrophilic interaction liquid chromatography (HILIC) and fluorescence detection (FLD). We confirmed the optimal excitation and emission wavelengths of 3-AQ and 6-AQ conjugated to glycan standards using three-dimensional fluorescent spectral scanning. The optimal excitation and emission wavelengths for 6-AQ were confirmed at λex=355 nm and λem=440 nm. We concluded that the optimal wavelengths for 3-AQ were λex=355 nm and λem=420 nm, which differed considerably from the wavelengths applied in previous reports. HILIC-FLD chromatograms using experimentally determined wavelengths were similar to 2-aminobenzamide controls, but the peak capacity and resolution differed significantly when published 3-AQ λex/em values were applied. Furthermore, we found that 5-AQ and 8-AQ labeled maltohexaose did not display any fluorescent pro\xadperties when used as a carbohydrate tag for HPLC analysis. Finally, we applied experimentally determined wavelengths to 3-AQ labeled N-glycans released from human IgG to illustrate changes in retention time as well as to demonstrate that AQ labeling is applicable to complex sample analysis via exoglycosidase sequencing.

Up-Conversion Fluorescent Labels for Plastic Recycling: A Review

2017 ◽  
Vol 1 (5) ◽  
pp. 1600033 ◽  
Author(s):  
Guojun Gao ◽  
Andrey Turshatov ◽  
Ian A. Howard ◽  
Dmitry Busko ◽  
Reetu Joseph ◽  
...  
Keyword(s):  
Fluorescent Labels ◽  
Plastic Recycling

The optimum synergistic effect of amphiphilic polymers and the stabilization mechanism of a crude oil emulsion

2017 ◽  
Vol 35 (11) ◽  
pp. 1180-1187 ◽  
Author(s):  
Wanli Kang ◽  
Jiatong Jiang ◽  
Yao Lu ◽  
Derong Xu ◽  
Hairong Wu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Crude Oil ◽  
Amphiphilic Polymers ◽  
Stabilization Mechanism ◽  
Oil Emulsion
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