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Polymorph crystal packing effects on charge transfer emission in the solid state

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Polymorph crystal packing effects on charge transfer emission in the solid state. / He, Xiaoyan; Benniston, Andrew C.; Saarenpää, Hanna; Lemmetyinen, Helge; Tkachenko, Nikolai V.; Baisch, Ulrich.

In: Chemical Science, Vol. 6, No. 6, 01.06.2015, p. 3525-3532.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

He, X, Benniston, AC, Saarenpää, H, Lemmetyinen, H, Tkachenko, NV & Baisch, U 2015, 'Polymorph crystal packing effects on charge transfer emission in the solid state', Chemical Science, vol. 6, no. 6, pp. 3525-3532. https://doi.org/10.1039/c5sc01151e

APA

He, X., Benniston, A. C., Saarenpää, H., Lemmetyinen, H., Tkachenko, N. V., & Baisch, U. (2015). Polymorph crystal packing effects on charge transfer emission in the solid state. Chemical Science, 6(6), 3525-3532. https://doi.org/10.1039/c5sc01151e

Vancouver

He X, Benniston AC, Saarenpää H, Lemmetyinen H, Tkachenko NV, Baisch U. Polymorph crystal packing effects on charge transfer emission in the solid state. Chemical Science. 2015 Jun 1;6(6):3525-3532. https://doi.org/10.1039/c5sc01151e

Author

He, Xiaoyan ; Benniston, Andrew C. ; Saarenpää, Hanna ; Lemmetyinen, Helge ; Tkachenko, Nikolai V. ; Baisch, Ulrich. / Polymorph crystal packing effects on charge transfer emission in the solid state. In: Chemical Science. 2015 ; Vol. 6, No. 6. pp. 3525-3532.

Bibtex - Download

@article{51af750749ff40d9be05d81263d65cce,
title = "Polymorph crystal packing effects on charge transfer emission in the solid state",
abstract = "Condensation of 1,8-naphthalic anhydride with N,N-(dimethylamino)aniline produced the donor-acceptor compound DMIM, which crystallised from a chloroform-diethyl ether mixture to afford two different coloured crystal polymorphs. Crystals for one polymorph are small and green, whereas the other crystals are orange and needle-like. X-ray crystal structures for both polymorphs were determined. The donor N,N-dimethylaniline and acceptor naphthalimide groups are twisted with respect to each other; the degree of twist is marginally different for the two structures. The orange crystal polymorph crystallises in the monoclinic space group C2/c and contains two slightly different molecular conformers in the unit cell (calculated density is 1.410 g cm-3). The green crystal polymorph crystallises in the triclinic space group P1 and contains only one type of molecule in the unit cell (calculated density is 1.401 g cm-3). The crystal packing motifs for the two polymorphs are subtly different, explaining the small variance in the observed densities. Very weak room temperature emission was observed for DMIM in a CHCl3 solution, but crystals deposited on a glass slide glowed when irradiated at 488 nm using a fluorescence microscope. Disparate solid-state emission spectra and lifetimes for the two polymorphic crystal forms are observed for the dyad. The emission is assigned to charge recombination fluorescence from a charge transfer state. This journal is",
author = "Xiaoyan He and Benniston, {Andrew C.} and Hanna Saarenp{\"a}{\"a} and Helge Lemmetyinen and Tkachenko, {Nikolai V.} and Ulrich Baisch",
year = "2015",
month = "6",
day = "1",
doi = "10.1039/c5sc01151e",
language = "English",
volume = "6",
pages = "3525--3532",
journal = "Chemical Science",
issn = "2041-6520",
publisher = "Royal Society of Chemistry",
number = "6",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Polymorph crystal packing effects on charge transfer emission in the solid state

AU - He, Xiaoyan

AU - Benniston, Andrew C.

AU - Saarenpää, Hanna

AU - Lemmetyinen, Helge

AU - Tkachenko, Nikolai V.

AU - Baisch, Ulrich

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Condensation of 1,8-naphthalic anhydride with N,N-(dimethylamino)aniline produced the donor-acceptor compound DMIM, which crystallised from a chloroform-diethyl ether mixture to afford two different coloured crystal polymorphs. Crystals for one polymorph are small and green, whereas the other crystals are orange and needle-like. X-ray crystal structures for both polymorphs were determined. The donor N,N-dimethylaniline and acceptor naphthalimide groups are twisted with respect to each other; the degree of twist is marginally different for the two structures. The orange crystal polymorph crystallises in the monoclinic space group C2/c and contains two slightly different molecular conformers in the unit cell (calculated density is 1.410 g cm-3). The green crystal polymorph crystallises in the triclinic space group P1 and contains only one type of molecule in the unit cell (calculated density is 1.401 g cm-3). The crystal packing motifs for the two polymorphs are subtly different, explaining the small variance in the observed densities. Very weak room temperature emission was observed for DMIM in a CHCl3 solution, but crystals deposited on a glass slide glowed when irradiated at 488 nm using a fluorescence microscope. Disparate solid-state emission spectra and lifetimes for the two polymorphic crystal forms are observed for the dyad. The emission is assigned to charge recombination fluorescence from a charge transfer state. This journal is

AB - Condensation of 1,8-naphthalic anhydride with N,N-(dimethylamino)aniline produced the donor-acceptor compound DMIM, which crystallised from a chloroform-diethyl ether mixture to afford two different coloured crystal polymorphs. Crystals for one polymorph are small and green, whereas the other crystals are orange and needle-like. X-ray crystal structures for both polymorphs were determined. The donor N,N-dimethylaniline and acceptor naphthalimide groups are twisted with respect to each other; the degree of twist is marginally different for the two structures. The orange crystal polymorph crystallises in the monoclinic space group C2/c and contains two slightly different molecular conformers in the unit cell (calculated density is 1.410 g cm-3). The green crystal polymorph crystallises in the triclinic space group P1 and contains only one type of molecule in the unit cell (calculated density is 1.401 g cm-3). The crystal packing motifs for the two polymorphs are subtly different, explaining the small variance in the observed densities. Very weak room temperature emission was observed for DMIM in a CHCl3 solution, but crystals deposited on a glass slide glowed when irradiated at 488 nm using a fluorescence microscope. Disparate solid-state emission spectra and lifetimes for the two polymorphic crystal forms are observed for the dyad. The emission is assigned to charge recombination fluorescence from a charge transfer state. This journal is

UR - http://www.scopus.com/inward/record.url?scp=84929589670&partnerID=8YFLogxK

U2 - 10.1039/c5sc01151e

DO - 10.1039/c5sc01151e

M3 - Article

VL - 6

SP - 3525

EP - 3532

JO - Chemical Science

JF - Chemical Science

SN - 2041-6520

IS - 6

ER -