A new pH sensitive fluorescent and white light emissive material through controlled intermolecular charge transfer

Y. I. Park; O. Postupna; A. Zhugayevych; H. Shin; Y.-S. Park; B. Kim; H.-J. Yen; P. Cheruku; J. S. Martinez; J. W. Park; S. Tretiak; H.-L. Wang

doi:10.1039/C4SC01911C

A new pH sensitive fluorescent and white light emissive material through controlled intermolecular charge transfer†

Y. I. Park,‡^a O. Postupna,‡^b A. Zhugayevych,‡^b H. Shin,^c Y.-S. Park,^a B. Kim,^c H.-J. Yen,^a P. Cheruku,^a J. S. Martinez,^d J. W. Park,^c S. Tretiak*^b and H.-L. Wang*^a

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* Corresponding authors

^a Physical Chemistry and Applied Spectroscopy (C-PCS), Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
E-mail: hwang@lanl.gov

^b Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
E-mail: serg@lanl.gov

^c Department of Chemistry/Display Research Center, Catholic University of Korea, Bucheon 420-743, Republic of Korea

^d Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

Abstract

A new, pH dependent and water-soluble, conjugated oligomer (amino, trimethylammonium oligophenylene vinylene, ATAOPV) was synthesized with a quaternary ammonium salt and an aromatic amine at the two ends of a π-conjugated oligomer, thus creating a strong dipole across the molecule. A unique white light LED is successfully fabricated from a stimuli responsive organic molecule whose emission properties are dominated by the pH value of the solution through controlled intermolecular charge transfer.

Chemical Science

A new pH sensitive fluorescent and white light emissive material through controlled intermolecular charge transfer†

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A new pH sensitive fluorescent and white light emissive material through controlled intermolecular charge transfer

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