Isomerization and reorientation of Disperse Red 1 in poly(ethyl methacrylate)

2021 ◽  
Vol 155 (16) ◽  
pp. 164901
Author(s):  
S. Grebenkin ◽  
V. M. Syutkin
Keyword(s):  
Ethyl Methacrylate ◽  
Disperse Red 1

PHOTOINDUCED NONLINEAR OCTUPOLAR POLARIZATION: TRANSIENT AND PERMANENT REGIMES

1996 ◽  
Vol 05 (04) ◽  
pp. 653-670 ◽  
Author(s):  
CÉLINE FIORINI ◽  
JEAN-MICHEL NUNZI ◽  
FABRICE CHARRA ◽  
IFOR D.W. SAMUEL ◽  
JOSEPH ZYSS
Keyword(s):  
Theoretical Analysis ◽  
Second Harmonic ◽  
Experimental Results ◽  
Polar Field ◽  
Rotational Spectrum ◽  
Dual Frequency ◽  
One Dimensional ◽  
Ethyl Violet ◽  
Disperse Red 1 ◽  
Good Agreement

An original poling method using purely optical means and based on a dual-frequency interference process is presented. We show that the coherent superposition of two beams at fundamental and second-harmonic frequencies results in a polar field with an irreducible rotational spectrum containing both a vector and an octupolar component. This enables the method to be applied even to molecules without a permanent dipole such as octupolar molecules. After a theoretical analysis of the process, we describe different experiments aiming at light-induced noncentrosymmetry performed respectively on one-dimensional Disperse Red 1 and octupolar Ethyl Violet molecules. Macroscopic octupolar patterning of the induced order is demonstrated in both transient and permanent regimes. Experimental results show good agreement with theory.

High-speed electro-optic switch using buried electrode structure in polymer Mach–Zehnder waveguide

2016 ◽  
Vol 30 (06) ◽  
pp. 1650063 ◽  
Author(s):  
Jingwen Sun ◽  
Jian Sun ◽  
Yunji Yi ◽  
Lucheng Qv ◽  
Shiqi Sun ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Rise Time ◽  
High Speed ◽  
Low Cost ◽  
Characteristic Parameters ◽  
Electrode Structure ◽  
Processing Cost ◽  
Electro Optic ◽  
Disperse Red 1 ◽  
Excellent Photostability

A low-cost and high-speed electro-optic (EO) switch using the guest–host EO material Disperse Red 1/Polymethyl Methacrylate (DR1/PMMA) was designed and fabricated. The DR1/PMMA material presented a low processing cost, an excellent photostability and a large EO coefficient of 13.1 pm/V. To improve the performance of the switch, the in-plane buried electrode structure was introduced in the polymer Mach–Zehnder waveguide to improve the poling and modulating efficiency. The characteristic parameters of the waveguide and the electrodes were carefully designed and the fabrication process was strictly controlled. Under 1550 nm, the insertion loss of the device was 12.7 dB. The measured switching rise time and fall time of the switch were 50.00 ns and 54.29 ns, respectively.

scholarly journals Tuning the Cloud-Point and Flocculation Temperature of Poly(2-(diethylamino)ethyl methacrylate)-Based Nanoparticles via a Postpolymerization Betainization Approach

2021 ◽  
Author(s):  
Matthieu P. J. Miclotte ◽  
Stefan B. Lawrenson ◽  
Spyridon Varlas ◽  
Bilal Rashid ◽  
Emma Chapman ◽  
...  
Keyword(s):  
Cloud Point ◽  
Ethyl Methacrylate

Stimuli-responsive polymersomes of poly [2-(dimethylamino) ethyl methacrylate]-b-polystyrene

2021 ◽  
Author(s):  
Valdomiro V. de Souza ◽  
Gustavo P. B. Carretero ◽  
Phelipe A. M. Vitale ◽  
Íris Todeschini ◽  
Paloma O. Kotani ◽  
...  
Keyword(s):  
Stimuli Responsive ◽  
Ethyl Methacrylate

scholarly journals Folic Acid-Terminated Poly(2-Diethyl Amino Ethyl Methacrylate) Brush-Gated Magnetic Mesoporous Nanoparticles as a Smart Drug Delivery System

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 59
Author(s):  
Abeer M. Beagan ◽  
Ahlam A. Alghamdi ◽  
Shatha S. Lahmadi ◽  
Majed A. Halwani ◽  
Mohammed S. Almeataq ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Resistance ◽  
Folic Acid ◽  
Drug Delivery System ◽  
Targeted Drug Delivery ◽  
Ph Responsive ◽  
Ethyl Methacrylate ◽  
Mesoporous Nanoparticles ◽  
Targeted Drug ◽  
Mcf 7

Currently, chemotherapy is an important method for the treatment of various cancers. Nevertheless, it has many limitations, such as poor tumour selectivity and multi-drug resistance. It is necessary to improve this treatment method by incorporating a targeted drug delivery system aimed to reduce side effects and drug resistance. The present work aims to develop pH-sensitive nanocarriers containing magnetic mesoporous silica nanoparticles (MMSNs) coated with pH-responsive polymers for tumour-targeted drug delivery via the folate receptor. 2-Diethyl amino ethyl methacrylate (DEAEMA) was successfully grafted on MMSNs via surface initiated ARGET atom transfer radical polymerization (ATRP), with an average particle size of 180 nm. The end groups of poly (2-(diethylamino)ethyl methacrylate) (PDEAEMA) brushes were converted to amines, followed by a covalent bond with folic acid (FA) as a targeting agent. FA conjugated to the nanoparticle surface was confirmed by X-ray photoelectron spectroscopy (XPS). pH-Responsive behavior of PDEAEMA brushes was investigated by Dynamic Light Scattering (DLS). The nanoparticles average diameters ranged from ca. 350 nm in basic media to ca. 650 in acidic solution. Multifunctional pH-sensitive magnetic mesoporous nanoparticles were loaded with an anti-cancer drug (Doxorubicin) to investigate their capacity and long-circulation time. In a cumulative release pattern, doxorubicin (DOX) release from nano-systems was ca. 20% when the particle exposed to acidic media, compared to ca. 5% in basic media. The nano-systems have excellent biocompatibility and are minimally toxic when exposed to MCF-7, and -MCF-7 ADR cells.

Synthesis of poly(ethylene-co-butylene)-block-poly(ethylene oxide) surfactant and its use in the synthesis of polyhydroxyethyl methacrylate nanoparticles containing azo-dye

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 35027-35034 ◽  
Author(s):  
Yee Song Ko ◽  
Monica V. Circu ◽  
Thomas Geiger ◽  
Simon Dünki ◽  
Frank A. Nüesch ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Azo Dye ◽  
Miniemulsion Polymerization ◽  
Hydroxyethyl Methacrylate ◽  
Polyhydroxyethyl Methacrylate ◽  
Inverse Miniemulsion ◽  
Poly Ethylene Oxide ◽  
Disperse Red 1 ◽  
Poly Ethylene

A new poly(ethylene-co-butylene)-block-poly(ethylene oxide) surfactant was synthesized and used in inverse miniemulsion polymerization of 2-hydroxyethyl methacrylate with encapsulated Disperse Red 1.

Nonlinear refractive indices of polystyrene films doped with azobenzene dye Disperse Red 1

1998 ◽  
Vol 34 (1) ◽  
pp. 116 ◽  
Author(s):  
C.R. Mendonça ◽  
M.M. Costa ◽  
J.A. Giacometti ◽  
F.D. Nunes ◽  
S.C. Zilio
Keyword(s):  
Refractive Indices ◽  
Disperse Red 1

On the efficient mixed amplitude and phase grating recording in vacuum deposited Disperse Red 1

2004 ◽  
Vol 461 (2) ◽  
pp. 316-324 ◽  
Author(s):  
H Taunaumang ◽  
M Solyga ◽  
M.O Tija ◽  
A Miniewicz
Keyword(s):  
Phase Grating ◽  
Disperse Red 1

On the dynamic mechanical behavior of poly(ethyl methacrylate) reinforced with kevlar fibers

1991 ◽  
Vol 42 (6) ◽  
pp. 1647-1657 ◽  
Author(s):  
J. L. Gómez Ribelles ◽  
J. Mañó Sebastià ◽  
R. Martí Soler ◽  
M. Monleón Pradas ◽  
A. Ribes Greus ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Dynamic Mechanical ◽  
Ethyl Methacrylate ◽  
Dynamic Mechanical Behavior
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