Lanthanide-Tetradentate Schiff Base-PMMA Composite Films for Tunable White Light Emission

Uttam Sarkar; Manjeet Singh; Mrinal K. Adak; Sagarika Bhattacharya

doi:10.1002/adom.202402592

Lanthanide-Tetradentate Schiff Base-PMMA Composite Films for Tunable White Light Emission

Uttam Sarkar, Manjeet Singh, Mrinal K. Adak, Sagarika Bhattacharya

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Multicolor emissive Schiff base lanthanide Poly(methyl methylacrylate) [PMMA] composite films are fabricated for white light generation. Three isostructural lanthanides (III) complexes [Eu^III₂(L)₂(NO₃)₂(dmf)₂ (1), Tb^III₂(L)₂(NO₃)₂(dmf)₂ (2) and Gd^III₂(L)₂(NO₃)₂(dmf)₂ (3)] are synthesized, characterized from the ligand obtained by 1:1 condensation of salicylaldehyde and 2-(2-Aminoethoxy)ethanol, H₂L. The photoluminescent studies revealed pure blue, green, and red color emissions from Gd^IIIL, Tb^IIIL, and Eu^IIIL complexes, although the central metal centers have identical dodecahedron geometry. Intensified ligand emission is attested for the blue emitter-Gd^IIIL complex while the “antenna effect” is witnessed for green Tb^IIIL and red Eu^IIIL complexes. Co-doping these multicolor luminescent emitters into the PMMA polymer the intensity of luminescence improved. A conscientious combination of red-Eu^IIIL with green-Tb^IIIL Lanthanide metal Schiff base complexes in a specified concentration, distinct white light is accomplished for the first time with Commission Internationale de I’Éclairage (CIE) values of 0.33, 0.30, very close to the ideal white emitter. The newly developed lanthanide-Schiff base-PMMA composite films are transparent and highly desired materials in optoelectronics, microscopy, and sensing.

Original language	English
Article number	2402592
Journal	Advanced Optical Materials
Volume	13
Issue number	7
DOIs	https://doi.org/10.1002/adom.202402592
State	Published - 4 Mar 2025
Externally published	Yes

Keywords

Color tuning
Lanthanide-metal-complexes
PMMA composite
Schiff base
White-light emission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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10.1002/adom.202402592

Cite this

@article{a3f71344fb9d4a79be71c4ad5fca48ec,

title = "Lanthanide-Tetradentate Schiff Base-PMMA Composite Films for Tunable White Light Emission",

abstract = "Multicolor emissive Schiff base lanthanide Poly(methyl methylacrylate) [PMMA] composite films are fabricated for white light generation. Three isostructural lanthanides (III) complexes [EuIII2(L)2(NO3)2(dmf)2 (1), TbIII2(L)2(NO3)2(dmf)2 (2) and GdIII2(L)2(NO3)2(dmf)2 (3)] are synthesized, characterized from the ligand obtained by 1:1 condensation of salicylaldehyde and 2-(2-Aminoethoxy)ethanol, H2L. The photoluminescent studies revealed pure blue, green, and red color emissions from GdIIIL, TbIIIL, and EuIIIL complexes, although the central metal centers have identical dodecahedron geometry. Intensified ligand emission is attested for the blue emitter-GdIIIL complex while the “antenna effect” is witnessed for green TbIIIL and red EuIIIL complexes. Co-doping these multicolor luminescent emitters into the PMMA polymer the intensity of luminescence improved. A conscientious combination of red-EuIIIL with green-TbIIIL Lanthanide metal Schiff base complexes in a specified concentration, distinct white light is accomplished for the first time with Commission Internationale de I{\textquoteright}{\'E}clairage (CIE) values of 0.33, 0.30, very close to the ideal white emitter. The newly developed lanthanide-Schiff base-PMMA composite films are transparent and highly desired materials in optoelectronics, microscopy, and sensing.",

keywords = "Color tuning, Lanthanide-metal-complexes, PMMA composite, Schiff base, White-light emission",

author = "Uttam Sarkar and Manjeet Singh and Adak, \{Mrinal K.\} and Sagarika Bhattacharya",

note = "Publisher Copyright: {\textcopyright} 2024 Wiley-VCH GmbH.",

year = "2025",

month = mar,

day = "4",

doi = "10.1002/adom.202402592",

language = "English",

volume = "13",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "John Wiley \& Sons Inc.",

number = "7",

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TY - JOUR

T1 - Lanthanide-Tetradentate Schiff Base-PMMA Composite Films for Tunable White Light Emission

AU - Sarkar, Uttam

AU - Singh, Manjeet

AU - Adak, Mrinal K.

AU - Bhattacharya, Sagarika

PY - 2025/3/4

Y1 - 2025/3/4

N2 - Multicolor emissive Schiff base lanthanide Poly(methyl methylacrylate) [PMMA] composite films are fabricated for white light generation. Three isostructural lanthanides (III) complexes [EuIII2(L)2(NO3)2(dmf)2 (1), TbIII2(L)2(NO3)2(dmf)2 (2) and GdIII2(L)2(NO3)2(dmf)2 (3)] are synthesized, characterized from the ligand obtained by 1:1 condensation of salicylaldehyde and 2-(2-Aminoethoxy)ethanol, H2L. The photoluminescent studies revealed pure blue, green, and red color emissions from GdIIIL, TbIIIL, and EuIIIL complexes, although the central metal centers have identical dodecahedron geometry. Intensified ligand emission is attested for the blue emitter-GdIIIL complex while the “antenna effect” is witnessed for green TbIIIL and red EuIIIL complexes. Co-doping these multicolor luminescent emitters into the PMMA polymer the intensity of luminescence improved. A conscientious combination of red-EuIIIL with green-TbIIIL Lanthanide metal Schiff base complexes in a specified concentration, distinct white light is accomplished for the first time with Commission Internationale de I’Éclairage (CIE) values of 0.33, 0.30, very close to the ideal white emitter. The newly developed lanthanide-Schiff base-PMMA composite films are transparent and highly desired materials in optoelectronics, microscopy, and sensing.

AB - Multicolor emissive Schiff base lanthanide Poly(methyl methylacrylate) [PMMA] composite films are fabricated for white light generation. Three isostructural lanthanides (III) complexes [EuIII2(L)2(NO3)2(dmf)2 (1), TbIII2(L)2(NO3)2(dmf)2 (2) and GdIII2(L)2(NO3)2(dmf)2 (3)] are synthesized, characterized from the ligand obtained by 1:1 condensation of salicylaldehyde and 2-(2-Aminoethoxy)ethanol, H2L. The photoluminescent studies revealed pure blue, green, and red color emissions from GdIIIL, TbIIIL, and EuIIIL complexes, although the central metal centers have identical dodecahedron geometry. Intensified ligand emission is attested for the blue emitter-GdIIIL complex while the “antenna effect” is witnessed for green TbIIIL and red EuIIIL complexes. Co-doping these multicolor luminescent emitters into the PMMA polymer the intensity of luminescence improved. A conscientious combination of red-EuIIIL with green-TbIIIL Lanthanide metal Schiff base complexes in a specified concentration, distinct white light is accomplished for the first time with Commission Internationale de I’Éclairage (CIE) values of 0.33, 0.30, very close to the ideal white emitter. The newly developed lanthanide-Schiff base-PMMA composite films are transparent and highly desired materials in optoelectronics, microscopy, and sensing.

KW - Color tuning

KW - Lanthanide-metal-complexes

KW - PMMA composite

KW - Schiff base

KW - White-light emission

UR - https://www.scopus.com/pages/publications/85212955355

U2 - 10.1002/adom.202402592

DO - 10.1002/adom.202402592

M3 - Article

AN - SCOPUS:85212955355

SN - 2195-1071

VL - 13

JO - Advanced Optical Materials

JF - Advanced Optical Materials

IS - 7

M1 - 2402592

ER -

Lanthanide-Tetradentate Schiff Base-PMMA Composite Films for Tunable White Light Emission

Abstract

Keywords

ASJC Scopus subject areas

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