Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

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Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes. / Temerova, Diana; Kisel, Kristina S.; Eskelinen, Toni; Melnikov, Alexei S.; Kinnunen, Niko; Hirva, Pipsa; Shakirova, Julia R.; Tunik, Sergey P.; Grachova, Elena V.; Koshevoy, Igor O.

In: Inorganic Chemistry Frontiers, Vol. 8, No. 10, 21.05.2021, p. 2549-2560.

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

BibTeX

@article{dde74d09ff724545a3ca0536080b7fab,

title = "Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes",

abstract = "Strongly blue fluorescent 1-phenyl-2-(pyridin-2-yl)-1H-phenanthro[9,10-d]imidazole (L1) is a facile block for the construction of multichromophore organic molecules, and simultaneously serves as a chelating diimine ligand. The coordination of L1 to zinc halides enhances the intraligand charge transfer and decreases the emission energy. For the iodide derivative, intra- and intermolecular heavy atom effects lead to a dual singlet-triplet emission with a temperature-dependent ratio of fluorescence and phosphorescence bands in the crystalline state. Decoration of the anthracene core with pyridyl-phenanthroimidazole units (L2 and L3) changes the localization of the lowest energy electronic transitions to the former polyaromatic motif. The solid-state photophysical characteristics of L2 and L3-based compounds strongly depend on the intermolecular interactions between the constituting p-systems (phenanthrene and anthracene), which are perturbed by the ZnX2 coordinated fragments. Modulation of p-stacking contacts in these molecular materials containing L2 and L3 chromophores forms a basis for dynamic optical properties, responsive to mechanical, thermal, or chemical stimuli. ",

keywords = "ROOM-TEMPERATURE PHOSPHORESCENCE, COORDINATION POLYMERS, SOLID-STATE, FLUORESCENT PROPERTIES, OPTICAL-PROPERTIES, EXCIMER EMISSION, SCHIFF-BASE, ANTHRACENE, ZN(II), BLUE",

author = "Diana Temerova and Kisel, {Kristina S.} and Toni Eskelinen and Melnikov, {Alexei S.} and Niko Kinnunen and Pipsa Hirva and Shakirova, {Julia R.} and Tunik, {Sergey P.} and Grachova, {Elena V.} and Koshevoy, {Igor O.}",

year = "2021",

month = may,

day = "21",

doi = "10.1039/d1qi00149c",

language = "English",

volume = "8",

pages = "2549--2560",

journal = "Inorganic Chemistry Frontiers",

issn = "2052-1545",

publisher = "Royal Society of Chemistry",

number = "10",

}

RIS

TY - JOUR

T1 - Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

AU - Temerova, Diana

AU - Kisel, Kristina S.

AU - Eskelinen, Toni

AU - Melnikov, Alexei S.

AU - Kinnunen, Niko

AU - Hirva, Pipsa

AU - Shakirova, Julia R.

AU - Tunik, Sergey P.

AU - Grachova, Elena V.

AU - Koshevoy, Igor O.

PY - 2021/5/21

Y1 - 2021/5/21

N2 - Strongly blue fluorescent 1-phenyl-2-(pyridin-2-yl)-1H-phenanthro[9,10-d]imidazole (L1) is a facile block for the construction of multichromophore organic molecules, and simultaneously serves as a chelating diimine ligand. The coordination of L1 to zinc halides enhances the intraligand charge transfer and decreases the emission energy. For the iodide derivative, intra- and intermolecular heavy atom effects lead to a dual singlet-triplet emission with a temperature-dependent ratio of fluorescence and phosphorescence bands in the crystalline state. Decoration of the anthracene core with pyridyl-phenanthroimidazole units (L2 and L3) changes the localization of the lowest energy electronic transitions to the former polyaromatic motif. The solid-state photophysical characteristics of L2 and L3-based compounds strongly depend on the intermolecular interactions between the constituting p-systems (phenanthrene and anthracene), which are perturbed by the ZnX2 coordinated fragments. Modulation of p-stacking contacts in these molecular materials containing L2 and L3 chromophores forms a basis for dynamic optical properties, responsive to mechanical, thermal, or chemical stimuli.

AB - Strongly blue fluorescent 1-phenyl-2-(pyridin-2-yl)-1H-phenanthro[9,10-d]imidazole (L1) is a facile block for the construction of multichromophore organic molecules, and simultaneously serves as a chelating diimine ligand. The coordination of L1 to zinc halides enhances the intraligand charge transfer and decreases the emission energy. For the iodide derivative, intra- and intermolecular heavy atom effects lead to a dual singlet-triplet emission with a temperature-dependent ratio of fluorescence and phosphorescence bands in the crystalline state. Decoration of the anthracene core with pyridyl-phenanthroimidazole units (L2 and L3) changes the localization of the lowest energy electronic transitions to the former polyaromatic motif. The solid-state photophysical characteristics of L2 and L3-based compounds strongly depend on the intermolecular interactions between the constituting p-systems (phenanthrene and anthracene), which are perturbed by the ZnX2 coordinated fragments. Modulation of p-stacking contacts in these molecular materials containing L2 and L3 chromophores forms a basis for dynamic optical properties, responsive to mechanical, thermal, or chemical stimuli.

KW - ROOM-TEMPERATURE PHOSPHORESCENCE

KW - COORDINATION POLYMERS

KW - SOLID-STATE

KW - FLUORESCENT PROPERTIES

KW - OPTICAL-PROPERTIES

KW - EXCIMER EMISSION

KW - SCHIFF-BASE

KW - ANTHRACENE

KW - ZN(II)

KW - BLUE

UR - http://www.scopus.com/inward/record.url?scp=85106150339&partnerID=8YFLogxK

U2 - 10.1039/d1qi00149c

DO - 10.1039/d1qi00149c

M3 - Article

AN - SCOPUS:85106150339

VL - 8

SP - 2549

EP - 2560

JO - Inorganic Chemistry Frontiers

JF - Inorganic Chemistry Frontiers

SN - 2052-1545

IS - 10

ER -

ID: 77225752