Hyperbranched poly(ether amine) nanomicelles as nanoreactors for the unexpected ultrafast photolysis of fluorescein dyes

2018 ◽  
Vol 9 (20) ◽  
pp. 2727-2732 ◽  
Author(s):  
Tao Tao ◽  
Ruiqing Wang ◽  
Hongjie Xu ◽  
Jie Yin ◽  
Xuesong Jiang
Keyword(s):  
Hyperbranched Poly ◽  
Fluorescein Dyes

hPEA nanomicelles can encapsulate fluorescein dyes as a nanoreactor, leading to the fast photobleaching of dyes.

Fluorescence ratio imaging of dynamic intracellular ionic signals

1988 ◽  
Vol 46 ◽  
pp. 42-43
Author(s):  
R. Y. Tsien ◽  
A. Minta ◽  
M. Poenie ◽  
J.P.Y. Kao ◽  
A. Harootunian
Keyword(s):  
Binding Sites ◽  
Living Cells ◽  
Molecular Engineering ◽  
Ph Indicators ◽  
Highly Sensitive ◽  
Fluorescence Ratio Imaging ◽  
Ratio Imaging ◽  
Technical Advances ◽  
Indicator Dyes ◽  
Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

scholarly journals Distribution and Transport of CO2 in Hydrated Hyperbranched Poly(ethylenimine) Membranes: A Molecular Dynamics Simulation Approach

ACS Omega ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 3390-3398
Author(s):  
Kyung Il Kim ◽  
Robin Lawler ◽  
Hyun June Moon ◽  
Pavithra Narayanan ◽  
Miles A. Sakwa-Novak ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Simulation Approach ◽  
Hyperbranched Poly

Hyperbranched Poly(ethylene glycol)s:  A New Class of Ion-Conducting Materials

1996 ◽  
Vol 29 (11) ◽  
pp. 3831-3838 ◽  
Author(s):  
Craig J. Hawker ◽  
Fengkui Chu ◽  
Peter J. Pomery ◽  
David J. T. Hill
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
New Class ◽  
Hyperbranched Poly ◽  
Conducting Materials ◽  
Ion Conducting ◽  
Poly Ethylene

Synthesis of A2+B3 type hyperbranched poly(amide-ether) block copolymer and its shape memory function

2021 ◽  
Vol 146 ◽  
pp. 110255
Author(s):  
Ryoji Kudo ◽  
Tadashi Tsukamoto ◽  
Shiduko Nakajo ◽  
Atsuhiro Fujimori ◽  
Yoshiyuki Oishi ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Memory Function ◽  
Hyperbranched Poly

scholarly journals Thiol-yne/thiol-epoxy hybrid crosslinked materials based on propargyl modified hyperbranched poly(ethyleneimine) and diglycidylether of bisphenol A resins

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61576-61584 ◽  
Author(s):  
Cristina Acebo ◽  
Xavier Fernàndez-Francos ◽  
Xavier Ramis ◽  
Àngels Serra
Keyword(s):  
Bisphenol A ◽  
Hyperbranched Poly ◽  
Dual Curing

Photoinitiated thiol-yne reaction was combined with thermal thiol-epoxy to get thermosets by dual curing from propargyl decorated poly(ethyleneimine) and DGEBA.

The influence of β-cyclodextrin on acid–base and tautomeric equilibrium of fluorescein dyes in aqueous solution

2010 ◽  
Vol 345 (13) ◽  
pp. 1882-1890 ◽  
Author(s):  
Larisa N. Bogdanova ◽  
Nikolay O. Mchedlov-Petrossyan ◽  
Natalya A. Vodolazkaya ◽  
Alexander V. Lebed
Keyword(s):  
Aqueous Solution ◽  
Tautomeric Equilibrium ◽  
Acid Base ◽  
Fluorescein Dyes
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