Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Cationic Chain-Growth Polymerization: Mechanism

Cationic Chain-Growth Polymerization: Mechanism

The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

3D free-standing porous scaffolds made of graphene oxide as substrates for neural cell growth.

Journal of materials chemistry. B·2020

Same author

Molecular study of hypersensitivity to spores in adults and children from Castile & Leon.

Allergologia et immunopathologia·2018

Same author

Reline aqueous solutions behaving as liquid mixtures of H-bonded co-solvents: microphase segregation and formation of co-continuous structures as indicated by Brillouin and <sup>1</sup>H NMR spectroscopies.

Physical chemistry chemical physics : PCCP·2017

Same author

Measurement of the charge asymmetry in top quark pair production in <i>pp</i> collisions at [Formula: see text] using the ATLAS detector.

The European physical journal. C, Particles and fields·2015

Same author

Search for lepton flavour violation in the <i>eμ</i> continuum with the ATLAS detector in [Formula: see text]<i>pp</i> collisions at the LHC.

The European physical journal. C, Particles and fields·2015

Same author

Measurement of [Formula: see text] production with a veto on additional central jet activity in <i>pp</i> collisions at [Formula: see text] TeV using the ATLAS detector.

The European physical journal. C, Particles and fields·2015

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

Proton-transfer lasers from solid polymeric chains with covalently bound 2-(2'-hydroxyphenyl) benzimidazole groups.

M L Ferrer, A U Acuña, F Amat-Guerri

|October 2, 2010

Summary

Newly synthesized benzimidazole derivatives show enhanced lasing properties when covalently bound to polymers. This improves efficiency and photostability for advanced laser applications.

More Related Videos

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Related Experiment Videos

Last Updated: Jun 8, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Area of Science:

Organic chemistry
Polymer science
Laser physics

Background:

2-(2'-hydroxyphenyl) benzimidazole derivatives are known for their photophysical properties.
Intramolecular proton transfer (IPT) in the excited state is a key mechanism for their optical behavior.
Polymer matrices can influence the performance of organic dyes.

Purpose of the Study:

To investigate the lasing properties of novel 2-(2'-hydroxyphenyl) benzimidazole derivatives.
To compare the performance of these derivatives when copolymerized with methyl methacrylate versus dissolved in poly(methyl methacrylate).
To evaluate the impact of covalently binding the proton-transfer chromophore to a polymer chain on lasing efficiency and photostability.

Main Methods:

Synthesis of new 2-(2'-hydroxyphenyl) benzimidazole derivatives.
Copolymerization of derivatives with methyl methacrylate.
Dissolution of derivatives in poly(methyl methacrylate) films.
Pumping experiments using an N(2) laser.
Analysis of lasing efficiency and dye photostability.

Main Results:

The N(2) laser-pumped lasing properties of the synthesized benzimidazole derivatives were reported.
Radiation mechanism confirmed to be intramolecular proton-transfer in the electronic excited state.
Significant increases in both lasing efficiency and dye photostability were observed when the proton-transfer chromophore was covalently bound to the polymeric chain.
Energy-conversion efficiencies comparable to those in liquid solutions were achieved in the polymer-bound system.

Conclusions:

Covalent incorporation of proton-transfer chromophores into polymer chains enhances lasing performance.
Polymer-bound benzimidazole derivatives offer a viable alternative to liquid solutions for laser applications.
The study demonstrates a promising approach for developing stable and efficient polymeric laser materials.