Strong visible-light emission in annealed poly(acrylic acid)

Abebe Tilahun Tarekegne; Jakob Janting; Haiyan Ou

doi:10.1364/OME.411329

Strong visible-light emission in annealed poly(acrylic acid)

Abebe Tilahun Tarekegne, Jakob Janting, Haiyan Ou

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Abstract

An intense and broadband photoluminescence emission is demonstrated in a biocompatible film produced by thermal annealing of poly(acrylic acid) (PAA). The annealing process enhances the emission intensity from weakly emitting sub-luminophores of C–O and C=O functional groups by a factor of more than two orders of magnitude. The emission property can be sensitively tuned by the annealing temperature, duration, the PAA solution preparation conditions such as solvent type and solvent:PAA ratio. The strong luminescence is attributed to the formation of rigid molecular structure due to aggregation and crosslinking. FTIR measurements show that the aggregation and crosslinking processes subdue nonradiative recombination pathways.

Original language	English
Journal	Optical Materials Express
Volume	10
Issue number	12
Pages (from-to)	3424-3434
ISSN	2159-3930
DOIs	https://doi.org/10.1364/OME.411329
Publication status	Published - 2020

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title = "Strong visible-light emission in annealed poly(acrylic acid)",

abstract = "An intense and broadband photoluminescence emission is demonstrated in a biocompatible film produced by thermal annealing of poly(acrylic acid) (PAA). The annealing process enhances the emission intensity from weakly emitting sub-luminophores of C–O and C=O functional groups by a factor of more than two orders of magnitude. The emission property can be sensitively tuned by the annealing temperature, duration, the PAA solution preparation conditions such as solvent type and solvent:PAA ratio. The strong luminescence is attributed to the formation of rigid molecular structure due to aggregation and crosslinking. FTIR measurements show that the aggregation and crosslinking processes subdue nonradiative recombination pathways.",

author = "Tarekegne, {Abebe Tilahun} and Jakob Janting and Haiyan Ou",

year = "2020",

doi = "10.1364/OME.411329",

language = "English",

volume = "10",

pages = "3424--3434",

journal = "Optical Materials Express",

issn = "2159-3930",

publisher = "Optical Society of America",

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TY - JOUR

T1 - Strong visible-light emission in annealed poly(acrylic acid)

AU - Tarekegne, Abebe Tilahun

AU - Janting, Jakob

AU - Ou, Haiyan

PY - 2020

Y1 - 2020

N2 - An intense and broadband photoluminescence emission is demonstrated in a biocompatible film produced by thermal annealing of poly(acrylic acid) (PAA). The annealing process enhances the emission intensity from weakly emitting sub-luminophores of C–O and C=O functional groups by a factor of more than two orders of magnitude. The emission property can be sensitively tuned by the annealing temperature, duration, the PAA solution preparation conditions such as solvent type and solvent:PAA ratio. The strong luminescence is attributed to the formation of rigid molecular structure due to aggregation and crosslinking. FTIR measurements show that the aggregation and crosslinking processes subdue nonradiative recombination pathways.

AB - An intense and broadband photoluminescence emission is demonstrated in a biocompatible film produced by thermal annealing of poly(acrylic acid) (PAA). The annealing process enhances the emission intensity from weakly emitting sub-luminophores of C–O and C=O functional groups by a factor of more than two orders of magnitude. The emission property can be sensitively tuned by the annealing temperature, duration, the PAA solution preparation conditions such as solvent type and solvent:PAA ratio. The strong luminescence is attributed to the formation of rigid molecular structure due to aggregation and crosslinking. FTIR measurements show that the aggregation and crosslinking processes subdue nonradiative recombination pathways.

U2 - 10.1364/OME.411329

DO - 10.1364/OME.411329

M3 - Journal article

VL - 10

SP - 3424

EP - 3434

JO - Optical Materials Express

JF - Optical Materials Express

SN - 2159-3930

IS - 12

ER -