Blue-Emitting 2D- and 3D-Zinc Coordination Polymers Based on Schiff-Base Amino Acid Ligands

Rodavgi Karakousi; Pinelopi A. Tsami; Maria-Areti I. Spanoudaki; Scott J. Dalgarno; Vassileios C. Papadimitriou; Constantinos J. Milios

doi:10.3390/chemistry5030121

Blue-Emitting 2D- and 3D-Zinc Coordination Polymers Based on Schiff-Base Amino Acid Ligands

Rodavgi Karakousi, Pinelopi A. Tsami, Maria-Areti I. Spanoudaki, Scott J. Dalgarno, Vassileios C. Papadimitriou, Constantinos J. Milios

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Abstract

The solvothermal reaction of Zn(NO₃)₂·4H₂O, 1-OH-2-naphthaldehyde, and 2-methylalanine (mAla) in MeOH leads to the formation of complex {[ZnL₁]}_2n (1) (H₂L₁ = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and mAla) in good yields. The structure of the neutral species, as determined by single-crystal crystallography, describes a two-dimensional coordination polymer, with repeating {Zn₂} units bridged by syn, anti-carboxylate groups of the Schiff-base ligands. Repeating the same reaction using glycine (gly) instead of mAla leads to the formation of complex {[ZnL₂]·0.33MeOH}_3n (2.0.33MeOH) (H₂L₂ = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and gly), again in good yields. Complex 2 describes a three-dimensional coordination polymer based on {Zn₂} building blocks, arranged by anti, anti-carboxylate groups in a 3D motif. Complexes 1 and 2 were found to strongly emit at ~435 nm (λ_exc= 317 nm) both in solution and solid state, with complex 2 displaying a slightly longer lifetime of τ_av= 2.45 ns vs.τ_av= 2.02 ns for 1.

Original language	English
Pages (from-to)	1770-1780
Number of pages	11
Journal	Chemistry
Volume	5
Issue number	3
Early online date	9 Aug 2023
DOIs	https://doi.org/10.3390/chemistry5030121
Publication status	Published - Sept 2023

Keywords

2D
3D
Schiff-base ligands
Zn coordination polymers
amino acid ligands
crystal structure
fluorescence
fluorescence lifetimes

ASJC Scopus subject areas

Chemistry (miscellaneous)
Organic Chemistry
Inorganic Chemistry
Electrochemistry

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title = "Blue-Emitting 2D- and 3D-Zinc Coordination Polymers Based on Schiff-Base Amino Acid Ligands",

abstract = "The solvothermal reaction of Zn(NO3)2·4H2O, 1-OH-2-naphthaldehyde, and 2-methylalanine (mAla) in MeOH leads to the formation of complex {[ZnL1]}2n (1) (H2L1 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and mAla) in good yields. The structure of the neutral species, as determined by single-crystal crystallography, describes a two-dimensional coordination polymer, with repeating {Zn2} units bridged by syn, anti-carboxylate groups of the Schiff-base ligands. Repeating the same reaction using glycine (gly) instead of mAla leads to the formation of complex {[ZnL2]·0.33MeOH}3n (2.0.33MeOH) (H2L2 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and gly), again in good yields. Complex 2 describes a three-dimensional coordination polymer based on {Zn2} building blocks, arranged by anti, anti-carboxylate groups in a 3D motif. Complexes 1 and 2 were found to strongly emit at ~435 nm (λexc= 317 nm) both in solution and solid state, with complex 2 displaying a slightly longer lifetime of τav= 2.45 ns vs.τav = 2.02 ns for 1.",

keywords = "2D, 3D, Schiff-base ligands, Zn coordination polymers, amino acid ligands, crystal structure, fluorescence, fluorescence lifetimes",

author = "Rodavgi Karakousi and Tsami, {Pinelopi A.} and Spanoudaki, {Maria-Areti I.} and Dalgarno, {Scott J.} and Papadimitriou, {Vassileios C.} and Milios, {Constantinos J.}",

year = "2023",

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doi = "10.3390/chemistry5030121",

language = "English",

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journal = "Chemistry",

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publisher = "MDPI",

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T1 - Blue-Emitting 2D- and 3D-Zinc Coordination Polymers Based on Schiff-Base Amino Acid Ligands

AU - Karakousi, Rodavgi

AU - Tsami, Pinelopi A.

AU - Spanoudaki, Maria-Areti I.

AU - Dalgarno, Scott J.

AU - Papadimitriou, Vassileios C.

AU - Milios, Constantinos J.

PY - 2023/9

Y1 - 2023/9

N2 - The solvothermal reaction of Zn(NO3)2·4H2O, 1-OH-2-naphthaldehyde, and 2-methylalanine (mAla) in MeOH leads to the formation of complex {[ZnL1]}2n (1) (H2L1 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and mAla) in good yields. The structure of the neutral species, as determined by single-crystal crystallography, describes a two-dimensional coordination polymer, with repeating {Zn2} units bridged by syn, anti-carboxylate groups of the Schiff-base ligands. Repeating the same reaction using glycine (gly) instead of mAla leads to the formation of complex {[ZnL2]·0.33MeOH}3n (2.0.33MeOH) (H2L2 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and gly), again in good yields. Complex 2 describes a three-dimensional coordination polymer based on {Zn2} building blocks, arranged by anti, anti-carboxylate groups in a 3D motif. Complexes 1 and 2 were found to strongly emit at ~435 nm (λexc= 317 nm) both in solution and solid state, with complex 2 displaying a slightly longer lifetime of τav= 2.45 ns vs.τav = 2.02 ns for 1.

AB - The solvothermal reaction of Zn(NO3)2·4H2O, 1-OH-2-naphthaldehyde, and 2-methylalanine (mAla) in MeOH leads to the formation of complex {[ZnL1]}2n (1) (H2L1 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and mAla) in good yields. The structure of the neutral species, as determined by single-crystal crystallography, describes a two-dimensional coordination polymer, with repeating {Zn2} units bridged by syn, anti-carboxylate groups of the Schiff-base ligands. Repeating the same reaction using glycine (gly) instead of mAla leads to the formation of complex {[ZnL2]·0.33MeOH}3n (2.0.33MeOH) (H2L2 = the Schiff-base resulting from the reaction of 1-OH-2-naphthaldehyde and gly), again in good yields. Complex 2 describes a three-dimensional coordination polymer based on {Zn2} building blocks, arranged by anti, anti-carboxylate groups in a 3D motif. Complexes 1 and 2 were found to strongly emit at ~435 nm (λexc= 317 nm) both in solution and solid state, with complex 2 displaying a slightly longer lifetime of τav= 2.45 ns vs.τav = 2.02 ns for 1.

KW - 2D

KW - 3D

KW - Schiff-base ligands

KW - Zn coordination polymers

KW - amino acid ligands

KW - crystal structure

KW - fluorescence

KW - fluorescence lifetimes

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U2 - 10.3390/chemistry5030121

DO - 10.3390/chemistry5030121

M3 - Article

SN - 2624-8549

VL - 5

SP - 1770

EP - 1780

JO - Chemistry

JF - Chemistry

IS - 3

ER -

Blue-Emitting 2D- and 3D-Zinc Coordination Polymers Based on Schiff-Base Amino Acid Ligands

Abstract

Keywords

ASJC Scopus subject areas

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