(CHNCl)(IOCl): a birefringent crystal featuring unprecedented (IOCl) anions and π-conjugated organic cations
Birefringent crystals can manipulate the polarization state of lasers and have vital application in polarizers, optical isolators, phase compensators, etc. The design and synthesis of crystals with large birefringence remains a challenging task. To design crystals with large birefringence, we combin...
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| Published in | Chemical science (Cambridge) Vol. 14; no. 48; pp. 1432 - 1437 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
England
Royal Society of Chemistry
13.12.2023
The Royal Society of Chemistry |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2041-6520 2041-6539 |
| DOI | 10.1039/d3sc05770d |
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| Summary: | Birefringent crystals can manipulate the polarization state of lasers and have vital application in polarizers, optical isolators, phase compensators,
etc.
The design and synthesis of crystals with large birefringence remains a challenging task. To design crystals with large birefringence, we combine an unprecedented chloroiodate(
v
) group (IO
2
Cl
2
)
−
featuring large polarizability anisotropy and a strong stereochemically active lone pair (SCALP) with the π-conjugated 2-amino-5-chloropyridine group. The superior synergy effect of (IO
2
Cl
2
)
−
and 2-amino-5-chloropyridine groups produces a new birefringent crystal, namely (C
5
H
6.16
N
2
Cl
0.84
)(IO
2
Cl
2
). It exhibits remarkably large birefringence of 0.67 at 546 nm, far exceeding those of most visible birefringent materials reported. This work discovers the first chloroiodate(
v
) group and provides a new synthetic route for birefringent materials.
(C
5
H
6.16
N
2
Cl
0.84
)(IO
2
Cl
2
) composed of unprecedented (IO
2
Cl
2
)
−
anions and π-conjugated (C
5
H
6.16
N
2
Cl
0.84
)
+
cations exhibits enormous birefringence of 0.67 at 546 nm. |
|---|---|
| Bibliography: | 2300002 For ESI and crystallographic data in CIF or other electronic format see DOI https://doi.org/10.1039/d3sc05770d Electronic supplementary information (ESI) available: Experimental procedures, theoretical calculations, crystallographic data, and measurements of physical properties. CCDC ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 |
| ISSN: | 2041-6520 2041-6539 |
| DOI: | 10.1039/d3sc05770d |