alexa Abstract | Improved fluorescence and solubility properties of N-substituted carboxyl poly(1,8-diaminonaphthalene) in the presence of europium cations

Journal of Chemical and Pharmaceutical Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Original Articles Open Access

Abstract

A simple and effective synthesis method for the dissolved poly(1,8-diaminonaphthalene)(P18DAN) with multifunctionality is a main challenge. Herein, a strategy is reported for the facile synthesis of N-substituted carboxyl group poly(1,8-diaminonaphthalene) by an oxidative polymerization of the N-substituted carboxyl 1,8-diaminonaphthalene monomer, prepared by a nucleophilic substitution reaction using chloroacetic acid and 1,8-diaminonaphthalene as reactants in N,N-dimethylformamde (DMF) solution. The europium doped carboxyl modified poly(1,8-diaminonaphthalenen) was fabricated in acidic solution containing europium ions. Their structures were characterized by the spectra of FT-IR, NMR, UV-vis, XRD, XPS. Structural analysis indicates that only one amino group can participate in nucleophilic substitution reaction, and the interaction of N-substituted carboxyl Poly(1,8-diaminonaphthalene) (PNDAN) with rare earth cations occurs at the nitrogen atom of imine and carboxyl groups on polymeric chain backbones. The isolated five-membered ring and the conjugated six-membered structure are formed among Eu3+ ions and nitrogen atom and carboxyl group at P18NDAN chain. The emission wave will shift from 405 to 462nm comparison with P18DAN polymer, whereas the fluorescent intensity only causes slightly change.

To read the full article Peer-reviewed Article PDF image

Author(s): Biao Yang Jiali Zhang Qi Song Xiaoai Ye and Hao Wang

Keywords

Poly(1,8-diaminonaphthalene), rare earth ions, N-substituted carboxyl group, fluorescence, fluorescence

 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords