Reversible SC‐SC Transformation involving [4+4] Cycloaddition of Anthracene: A Single‐Ion to Single‐Molecule Magnet and Yellow‐Green to Blue‐White Emission

In search of magneto‐optic materials, the mononuclear compounds LnIII(depma)(NO3)3(hmpa)2 (Ln=Dy, Gd) were synthesized. The anthracene moieties undergo [4+4] dimerization when irradiated at 365 nm without loss of crystallinity. The Dy compound switches from a single‐ion to a single‐molecule magnet w...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:Angewandte Chemie International Edition Ročník 57; číslo 28; s. 8577 - 8581
Hlavní autori: Huang, Xin‐Da, Xu, Yan, Fan, Kun, Bao, Song‐Song, Kurmoo, Mohamedally, Zheng, Li‐Min
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Germany Wiley Subscription Services, Inc 09.07.2018
Vydanie:International ed. in English
Predmet:
Anthracene
Clean energy
Cycloaddition
Dimerization
dysprosium
Dysprosium compounds
Emission
Emissions
Gadolinium
Magnetic properties
Molecular chains
Optical materials
Phosphonates
photocycloaddition
single-molecule magnets
Smart materials
Switches
white light
anthracene
photocycloaddition
dysprosium
white light
single-molecule magnets
ISSN:1433-7851, 1521-3773
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:In search of magneto‐optic materials, the mononuclear compounds LnIII(depma)(NO3)3(hmpa)2 (Ln=Dy, Gd) were synthesized. The anthracene moieties undergo [4+4] dimerization when irradiated at 365 nm without loss of crystallinity. The Dy compound switches from a single‐ion to a single‐molecule magnet with doubling of the spin reversal barrier energy and from yellow‐green to blue‐white emission. The dimerization is reversed by heating at 100 °C or partially on light irradiating at 254 nm. The results suggest that lanthanide phosphonates with anthracene are promising smart materials displaying synergistic magneto‐optic property. Pairing up: The mononuclear compound DyIII(depma)(NO3)3(hmpa)2 (depma= 9‐diethylphosphono‐methylanthracene, hmpa=hexamethylphosphoramide) undergoes reversible [4+4] photodimerization in a single‐crystal‐to‐single‐crystal manner. This process is accompanied by a change from a single‐ion to a single‐molecule magnet and from yellow‐green to blue‐white emission.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201804102