Manipulation of magnetic materials is a cornerstone of digital data storage technologies. Recently, it has been shown that femtosecond laser pulses are capable of switching the magnetization in a material between two stable configurations faster than ever before. One state-of-the-art method is to use laser pulses to control the magnetic anisotropy by photoexciting crystal-field transitions. The photoinduced change in anisotropy applies a torque to the magnetic moment, which reorientates it in a different direction. So far, research has focused solely on condensed matter materials. However, there is a huge variety of molecule-based magnetic materials that have been and continue to be developed. In particular, single-molecule magnets (SMMs) provide a highly tunable platform and have the added advantage of operating on nanometer length scales. This review discusses recent research in the area of ultrafast magnetism in SMMs, with a focus on manganese(III)-based transition metal complexes. Experimental data are reviewed, showing that control of the strength of the photoinduced anisotropy, the lifetime of excited states, and the dephasing times are possible and can be used to develop some design criteria for the best optically controllable SMMs.
REFERENCES
1.
D.
Rydning
,
J.
Reinsel
, and
J.
Gantz
, The Digitization of the World From Edge to Core
(
International Data Corporation
,
Framingham
, 2018
), Vol.
16
, pp. 1
–28
.2.
I.
Tudosa
,
C.
Stamm
,
A.
Kashuba
,
F.
King
,
H.
Siegmann
,
J.
Stöhr
,
G.
Ju
,
B.
Lu
, and
D.
Weller
, “
The ultimate speed of magnetic switching in granular recording media
,” Nature
428
, 831
–833
(2004
).3.
C.
Back
and
D.
Pescia
, “
Speed limit ahead
,” Nature
428
, 808
–809
(2004
).4.
D.
Strickland
and
G.
Mourou
, “
Compression of amplified chirped optical pulses
,” Opt. Commun.
55
, 447
–449
(1985
).5.
D. E.
Spence
,
P. N.
Kean
, and
W.
Sibbett
, “
60 fs pulse generation from a self-mode-locked
:sapphire laser
,” Opt. Lett.
16
, 42
–44
(1991
).6.
H.
Piller
, “
Faraday rotation
,” in Semiconductors and Semimetals
(
Elsevier
, 1972
), Vol.
8
, pp. 103
–179
.7.
E.
Beaurepaire
,
J.-C.
Merle
,
A.
Daunois
, and
J.-Y.
Bigot
, “
Ultrafast spin dynamics in ferromagnetic nickel
,” Phys. Rev. Lett.
76
, 4250
(1996
).8.
H.
Zhao
,
B.
Glass
,
P. K.
Amiri
,
A.
Lyle
,
Y.
Zhang
,
Y.-J.
Chen
,
G.
Rowlands
,
P.
Upadhyaya
,
Z.
Zeng
,
J.
Katine
et al, “
Sub-200 ps spin transfer torque switching in in-plane magnetic tunnel junctions with interface perpendicular anisotropy
,” J. Phys. D: Appl. Phys.
45
, 025001
(2011
).9.
A. V.
Kimel
,
A.
Kirilyuk
, and
T.
Rasing
, “
Femtosecond opto-magnetism: Ultrafast laser manipulation of magnetic materials
,” Laser Photonics Rev.
1
, 275
–287
(2007
).10.
A. V.
Kimel
,
A.
Kirilyuk
,
F.
Hansteen
,
R. V.
Pisarev
, and
T.
Rasing
, “
Nonthermal optical control of magnetism and ultrafast laser-induced spin dynamics in solids
,” J. Phys.: Condens. Matter
19
, 043201
(2007
).11.
A.
Kirilyuk
,
A. V.
Kimel
, and
T.
Rasing
, “
Ultrafast optical manipulation of magnetic order
,” Rev. Mod. Phys.
82
, 2731
(2010
).12.
A. M.
Kalashnikova
,
A. V.
Kimel
, and
R. V.
Pisarev
, “
Ultrafast opto-magnetism
,” Phys.-Usp.
58
, 969
(2015
).13.
J.
Mentink
, “
Manipulating magnetism by ultrafast control of the exchange interaction
,” J. Phys.: Condens. Matter
29
, 453001
(2017
).14.
K.
Carva
,
P.
Baláž
, and
I.
Radu
, “
Laser-induced ultrafast magnetic phenomena
,” Handb. Magn. Mater.
26
, 291
–463
(2017
).15.
A. V.
Kimel
and
M.
Li
, “
Writing magnetic memory with ultrashort light pulses
,” Nat. Rev. Mater.
4
, 189
–200
(2019
).16.
F.
Hansteen
,
A.
Kimel
,
A.
Kirilyuk
, and
T.
Rasing
, “
Femtosecond photomagnetic switching of spins in ferrimagnetic garnet films
,” Phys. Rev. Lett.
95
, 047402
(2005
).17.
S.
Tomimoto
,
M.
Matsubara
,
T.
Ogasawara
,
H.
Okamoto
,
T.
Kimura
, and
Y.
Tokura
, “
Optical control of the magnetic anisotropy of ferromagnetic bilayered manganites
,” Phys. Rev. Lett.
98
, 017402
(2007
).18.
F.
Atoneche
,
A.
Kalashnikova
,
A.
Kimel
,
A.
Stupakiewicz
,
A.
Maziewski
,
A.
Kirilyuk
, and
T.
Rasing
, “
Large ultrafast photoinduced magnetic anisotropy in a cobalt-substituted yttrium iron garnet
,” Phys. Rev. B
81
, 214440
(2010
).19.
J.
Stöhr
and
H. C.
Siegmann
, “
Magnetism
,” in Solid-State Sciences
(
Springer
,
Berlin, Heidelberg
, 2006
), Vol.
5
, pp. 294
–299
.20.
A.
Kirilyuk
,
A.
Kimel
,
F.
Hansteen
,
T.
Rasing
, and
R. V.
Pisarev
, “
Ultrafast all-optical control of the magnetization in magnetic dielectrics
,” Low Temp. Phys.
32
, 748
–767
(2006
).21.
S.
Baierl
,
M.
Hohenleutner
,
T.
Kampfrath
,
A.
Zvezdin
,
A. V.
Kimel
,
R.
Huber
, and
R.
Mikhaylovskiy
, “
Nonlinear spin control by terahertz-driven anisotropy fields
,” Nat. Photonics
10
, 715
–718
(2016
).22.
A.
Stupakiewicz
,
K.
Szerenos
,
D.
Afanasiev
,
A.
Kirilyuk
, and
A.
Kimel
, “
Ultrafast nonthermal photo-magnetic recording in a transparent medium
,” Nature
542
, 71
–74
(2017
).23.
T. F.
Nova
,
A.
Cartella
,
A.
Cantaluppi
,
M.
Först
,
D.
Bossini
,
R. V.
Mikhaylovskiy
,
A. V.
Kimel
,
R.
Merlin
, and
A.
Cavalleri
, “
An effective magnetic field from optically driven phonons
,” Nat. Phys.
13
, 132
–136
(2017
).24.
D.
Afanasiev
,
J. R.
Hortensius
,
M.
Matthiesen
,
S.
Mañas-Valero
,
M.
Šiškins
,
M.
Lee
,
E.
Lesne
,
H. S.
van Der Zant
,
P. G.
Steeneken
,
B. A.
Ivanov
et al, “
Controlling the anisotropy of a van der Waals antiferromagnet with light
,” Sci. Adv.
7
, eabf3096
(2021
).25.
D.
Afanasiev
,
J.
Hortensius
,
B.
Ivanov
,
A.
Sasani
,
E.
Bousquet
,
Y.
Blanter
,
R.
Mikhaylovskiy
,
A.
Kimel
, and
A.
Caviglia
, “
Ultrafast control of magnetic interactions via light-driven phonons
,” Nat. Mater.
20
, 607
–611
(2021
).26.
A.
Stupakiewicz
,
K.
Szerenos
,
M.
Davydova
,
K.
Zvezdin
,
A.
Zvezdin
,
A.
Kirilyuk
, and
A.
Kimel
, “
Selection rules for all-optical magnetic recording in iron garnet
,” Nat. Commun.
10
, 612
(2019
).27.
J.
Wang
,
C.
Sun
,
Y.
Hashimoto
,
J.
Kono
,
G. A.
Khodaparast
,
Ł.
Cywiński
,
L.
Sham
,
G. D.
Sanders
,
C. J.
Stanton
, and
H.
Munekata
, “
Ultrafast magneto-optics in ferromagnetic
–
semiconductors
,” J. Phys.: Condens. Matter
18
, R501
(2006
).28.
D.
Gatteschi
, “
Molecular magnetism: A basis for new materials
,” Adv. Mater.
6
, 635
–645
(1994
).29.
J.
Mroziński
, “
New trends of molecular magnetism
,” Coord. Chem. Rev.
249
, 2534
–2548
(2005
).30.
E.
Coronado
,
P.
Delhaès
,
D.
Gatteschi
, and
J. S.
Miller
, Molecular Magnetism: From Molecular Assemblies to the Devices
(
Springer Science & Business Media
, 2013
), Vol.
321
.31.
E.
Coronado
, “
Molecular magnetism: From chemical design to spin control in molecules, materials and devices
,” Nat. Rev. Mater.
5
, 87
–104
(2020
).32.
33.
T. J.
Penfold
,
J. O.
Johansson
, and
J.
Eng
, “
Towards understanding and controlling ultrafast dynamics in molecular photomagnets
,” Coord. Chem. Rev.
494
, 215346
(2023
).34.
G.
Christou
,
D.
Gatteschi
,
D. N.
Hendrickson
, and
R.
Sessoli
, “
Single-molecule magnets
,” MRS Bull.
25
, 66
–71
(2000
).35.
D. N.
Woodruff
,
R. E.
Winpenny
, and
R. A.
Layfield
, “
Lanthanide single-molecule magnets
,” Chem. Rev.
113
, 5110
–5148
(2013
).36.
R. A.
Layfield
, “
Organometallic single-molecule magnets
,” Organometallics
33
, 1084
–1099
(2014
).37.
D.
Shao
and
X.-Y.
Wang
, “
Development of single-molecule magnets
,” Chin. J. Chem.
38
, 1005
–1018
(2020
).38.
F.
Pineider
,
E.
Pedrueza-Villalmanzo
,
M.
Serri
,
A. M.
Adamu
,
E.
Smetanina
,
V.
Bonanni
,
G.
Campo
,
L.
Poggini
,
M.
Mannini
,
C.
de Julián Fernández
et al, “
Plasmon-enhanced magneto-optical detection of single-molecule magnets
,” Mater. Horiz.
6
, 1148
–1155
(2019
).39.
G.
Aromí
and
E. K.
Brechin
, “
Synthesis of 3D metallic single-molecule magnets
,” in Single-Molecule Magnets Related Phenomena
(
Springer
, 2006
), pp. 1
–67.
40.
N. F.
Chilton
, “
Design criteria for high-temperature single-molecule magnets
,” Inorg. Chem.
54
, 2097
–2099
(2015
).41.
M.
Perfetti
,
M. A.
Sørensen
,
U. B.
Hansen
,
H.
Bamberger
,
S.
Lenz
,
P. P.
Hallmen
,
T.
Fennell
,
G. G.
Simeoni
,
A.
Arauzo
,
J.
Bartolomé
et al, “
Magnetic anisotropy switch: Easy axis to easy plane conversion and vice versa
,” Adv. Funct. Mater.
28
, 1801846
(2018
).42.
M.
Perfetti
and
J.
Bendix
, “
The multiple faces, and phases, of magnetic anisotropy
,” Inorg. Chem.
58
, 11875
–11882
(2019
).43.
P.
Parois
,
S. A.
Moggach
,
J.
Sanchez-Benitez
,
K. V.
Kamenev
,
A. R.
Lennie
,
J. E.
Warren
,
E. K.
Brechin
,
S.
Parsons
, and
M.
Murrie
, “
Pressure-induced
switching in a
nanomagnet
,” Chem. Commun.
46
, 1881
–1883
(2010
).44.
A.
Raza
and
M.
Perfetti
, “
Electronic structure and magnetic anisotropy design of functional metal complexes
,” Coord. Chem. Rev.
490
, 215213
(2023
).45.
X.
Feng
,
C.
Mathonière
,
I.-R.
Jeon
,
M.
Rouzières
,
A.
Ozarowski
,
M. L.
Aubrey
,
M. I.
Gonzalez
,
R.
Clérac
, and
J. R.
Long
, “
Tristability in a light-actuated single-molecule magnet
,” J. Am. Chem. Soc.
135
, 15880
–15884
(2013
).46.
H. A.
Jahn
and
E.
Teller
, “
Stability of polyatomic molecules in degenerate electronic states
—orbital degeneracy
,” Proc. R. Soc. London, Ser. A
161
, 220
–235
(1937
).47.
R.
Englman
, The Jahn–Teller Effect in Molecules and Crystals
(
Wiley-Interscience
,
New York
, 1972
).48.
U.
Öpik
and
M. H. L.
Pryce
, “
Studies of the
effect.
.
survey of the static problem
,” Proc. R. Soc. London, Ser. A
238
, 425
–447
(1957
).49.
R. J.
Deeth
and
M. A.
Hitchman
, “
Factors influencing
distortions in six-coordinate copper (II) and low-spin nickel (II) complexes
,” Inorg. Chem.
25
, 1225
–1233
(1986
).50.
R.
Boča
, “
Zero-field splitting in metal complexes
,” Coord. Chem. Rev.
248
, 757
–815
(2004
).51.
S. M.
Aldoshin
,
D. V.
Korchagin
,
A. V.
Palii
, and
B. S.
Tsukerblat
, “
Some new trends in the design of single molecule magnets
,” Pure Appl. Chem.
89
, 1119
–1143
(2017
).52.
S.
Mossin
,
B. L.
Tran
,
D.
Adhikari
,
M.
Pink
,
F. W.
Heinemann
,
J.
Sutter
,
R. K.
Szilagyi
,
K.
Meyer
, and
D. J.
Mindiola
, “
A mononuclear
single molecule magnet with a 3/2
5/2 spin crossover
,” J. Am. Chem. Soc.
134
, 13651
–13661
(2012
).53.
L.
Chen
,
J.
Song
,
W.
Zhao
,
G.
Yi
,
Z.
Zhou
,
A.
Yuan
,
Y.
Song
,
Z.
Wang
, and
Z.-W.
Ouyang
, “
A mononuclear five-coordinate
single molecule magnet with a spin crossover between the s = 1/2 and 3/2 states
,” Dalton Trans.
47
, 16596
–16602
(2018
).54.
H.
Hao
,
X.
Zheng
,
L.
Song
,
R.
Wang
, and
Z.
Zeng
, “
Electrostatic spin crossover in a molecular junction of a single-molecule magnet
,” Phys. Rev. Lett.
108
, 017202
(2012
).55.
R.
Sessoli
,
D.
Gatteschi
,
A.
Caneschi
, and
M.
Novak
, “
Magnetic bistability in a metal-ion cluster
,” Nature
365
, 141
–143
(1993
).56.
Y.
Suzuki
,
K.
Takeda
, and
K.
Awaga
, “
Enhancement of
isomerism in
under high quasi-hydrostatic pressure
,” Phys. Rev. B
67
, 132402
(2003
).57.
E.
Rivière
,
B.
Donnio
,
E.
Voirin
,
G.
Rogez
,
J.-P.
Kappler
, and
J.-L.
Gallani
, “
Magneto-optical control of a
nanomagnet
,” J. Mater. Chem.
20
, 7165
–7168
(2010
).58.
B.
Donnio
,
E.
Riviere
,
E.
Terazzi
,
E.
Voirin
,
C.
Aronica
,
G.
Chastanet
,
D.
Luneau
,
G.
Rogez
,
F.
Scheurer
,
L.
Joly
et al, “
Magneto-optical interactions in single-molecule magnets: Low-temperature photon-induced demagnetization
,” Solid State Sci.
12
, 1307
–1313
(2010
).59.
E.
Ovchenkova
,
N.
Bichan
, and
T.
Lomova
, “
Photoinduced absorption spectra of donor–acceptor systems based on cobalt(II) and manganese(III) phthalocyanine complexes with femtosecond time resolution
,” Russ. J. Phys. Chem. A
96
, 717
–723
(2022
).60.
J.
Jung
,
K.
Ohkubo
,
K. A.
Prokop-Prigge
,
H. M.
Neu
,
D. P.
Goldberg
, and
S.
Fukuzumi
, “
Photochemical oxidation of a manganese(III) complex with oxygen and toluene derivatives to form a manganese (V)-oxo complex
,” Inorg. Chem.
52
, 13594
–13604
(2013
).61.
Y. H.
Kim
,
S. D.
Jung
,
M. H.
Lee
,
C.
Im
,
Y.-H.
Kim
,
Y. J.
Jang
,
S. K.
Kim
, and
D. W.
Cho
, “
Photoinduced reduction of manganese (III) meso-tetrakis (1-methylpyridinium-4-yl) porphyrin at
and
base pairs
,” J. Phys. Chem. B
117
, 9585
–9590
(2013
).62.
F. A.
Schaberle
,
A. R.
Abreu
,
N. P.
Goncalves
,
G. F.
Sa
,
M. M.
Pereira
, and
L. G.
Arnaut
, “
Ultrafast dynamics of manganese(III), manganese(II), and free-base bacteriochlorin: Is there time for photochemistry?
,” Inorg. Chem.
56
, 2677
–2689
(2017
).63.
F.
Liedy
,
J.
Eng
,
R.
McNab
,
R.
Inglis
,
T. J.
Penfold
,
E. K.
Brechin
, and
J. O.
Johansson
, “
Vibrational coherences in manganese single-molecule magnets after ultrafast photoexcitation
,” Nat. Chem.
12
, 452
–458
(2020
).64.
R.
Inglis
,
S. M.
Taylor
,
L. F.
Jones
,
G. S.
Papaefstathiou
,
S. P.
Perlepes
,
S.
Datta
,
S.
Hill
,
W.
Wernsdorfer
, and
E. K.
Brechin
, “
Twisting, bending, stretching: Strategies for making ferromagnetic [
] triangles
,” Dalton Trans.
9157
–9168
(2009
).65.
K.
Barlow
,
R.
Phelps
,
J.
Eng
,
T.
Katayama
,
E.
Sutcliffe
,
M.
Coletta
,
E. K.
Brechin
,
T. J.
Penfold
, and
J. O.
Johansson
, “
Tracking nuclear motion in single-molecule magnets using femtosecond x-ray absorption spectroscopy
,” Nat. Commun.
15
, 4043
(2024
).66.
T.
Katayama
,
T.
Northey
,
W.
Gawelda
,
C. J.
Milne
,
G.
Vankó
,
F. A.
Lima
,
R.
Bohinc
,
Z.
Németh
,
S.
Nozawa
,
T.
Sato
et al, “
Tracking multiple components of a nuclear wavepacket in photoexcited
-phenanthroline complex using ultrafast x-ray spectroscopy
,” Nat. Commun.
10
, 3606
(2019
).67.
F.
De Groot
, “
High-resolution x-ray emission and x-ray absorption spectroscopy
,” Chem. Rev.
101
, 1779
–1808
(2001
).68.
J. E.
Penner-Hahn
, Comprehensive Coordination Chemistry II
(
Pergamon
,
Oxford
, 2003
), pp. 159
–186
.69.
J.
Yano
and
V. K.
Yachandra
, “
X-ray absorption spectroscopy
,” Photosynth. Res.
102
, 241
–254
(2009
).70.
G. A.
Craig
and
M.
Murrie
, “
3D single-ion magnets
,” Chem. Soc. Rev.
44
, 2135
–2147
(2015
).71.
M.
Feng
and
M.-L.
Tong
, “
Single ion magnets from 3d to 5f: Developments and strategies
,” Chem.–A Eur. J.
24
, 7574
–7594
(2018
).72.
Y.
Rechkemmer
,
F. D.
Breitgoff
,
M.
Van Der Meer
,
M.
Atanasov
,
M.
Hakl
,
M.
Orlita
,
P.
Neugebauer
,
F.
Neese
,
B.
Sarkar
, and
J.
Van Slageren
, “
A four-coordinate cobalt(II) single-ion magnet with coercivity and a very high energy barrier
,” Nat. Commun.
7
, 10467
(2016
).73.
F.
Habib
,
O. R.
Luca
,
V.
Vieru
,
M.
Shiddiq
,
I.
Korobkov
,
S. I.
Gorelsky
,
M. K.
Takase
,
L. F.
Chibotaru
,
S.
Hill
,
R. H.
Crabtree
et al, “
Influence of the ligand field on slow magnetization relaxation versus spin crossover in mononuclear cobalt complexes
,” Angew. Chem. Int. Ed.
52
, 11290
–11293
(2013
).74.
F.
Kobayashi
,
Y.
Komatsumaru
,
R.
Akiyoshi
,
M.
Nakamura
,
Y.
Zhang
,
L. F.
Lindoy
, and
S.
Hayami
, “
Water molecule-induced reversible magnetic switching in a bis-terpyridine cobalt(II) complex exhibiting coexistence of spin crossover and orbital transition behaviors
,” Inorg. Chem.
59
, 16843
–16852
(2020
).75.
E.
Biasin
,
T. B.
van Driel
,
K. S.
Kjaer
,
A. O.
Dohn
,
M.
Christensen
,
T.
Harlang
,
P.
Vester
,
P.
Chabera
,
Y.
Liu
,
J.
Uhlig
et al, “
Femtosecond x-ray scattering study of ultrafast photoinduced structural dynamics in solvated
,” Phys. Rev. Lett.
117
, 013002
(2016
).
[PubMed]
76.
S. E.
Canton
,
M.
Biednov
,
M.
Pápai
,
F. A.
Lima
,
T.-K.
Choi
,
F.
Otte
,
Y.
Jiang
,
P.
Frankenberger
,
M.
Knoll
,
P.
Zalden
et al, “
Ultrafast
photoswitching in cobalt single-ion magnets
,” Adv. Sci.
10
, 2206880
(2023
).77.
M.
Iwamura
,
S.
Takeuchi
, and
T.
Tahara
, “
Real-time observation of the photoinduced structural change of bis (2, 9-dimethyl-1, 10-phenanthroline) copper (I) by femtosecond fluorescence spectroscopy: A realistic potential curve of the
distortion
,” J. Am. Chem. Soc.
129
, 5248
–5256
(2007
).78.
M.
Iwamura
,
H.
Watanabe
,
K.
Ishii
,
S.
Takeuchi
, and
T.
Tahara
, “
Coherent nuclear dynamics in ultrafast photoinduced structural change of bis (diimine) copper (I) complex
,” J. Am. Chem. Soc.
133
, 7728
–7736
(2011
).79.
M.
Iwamura
,
S.
Takeuchi
, and
T.
Tahara
, “
Substituent effect on the photoinduced structural change of
complexes observed by femtosecond emission spectroscopy
,” Phys. Chem. Chem. Phys.
16
, 4143
–4154
(2014
).80.
M.
Iwamura
,
S.
Takeuchi
, and
T.
Tahara
, “
Ultrafast excited-state dynamics of copper (I) complexes
,” Acc. Chem. Res.
48
, 782
–791
(2015
).81.
W.
Kaszub
,
A.
Marino
,
M.
Lorenc
,
E.
Collet
,
E. G.
Bagryanskaya
,
E. V.
Tretyakov
,
V. I.
Ovcharenko
, and
M. V.
Fedin
, “
Ultrafast photoswitching in a copper-nitroxide-based molecular magnet
,” Angew. Chem.
126
, 10812
–10816
(2014
).82.
S-i
Ohkoshi
,
H.
Tokoro
, and
E.
Collet
, “
Thermally induced and photoinduced phase transitions in rubidium manganese hexacyanoferrate combining charge transfer and structural reorganization
,” C. R. Chim.
22
, 498
–507
(2019
).83.
G.
Azzolina
,
E.
Collet
,
C.
Mariette
,
M.
Cammarata
,
E.
Trzop
,
M.
Sander
,
M.
Levantino
,
K.
Nakagawa
,
H.
Tokoro
,
S-i
Ohkoshi
et al, “
Single laser shot photoinduced phase transition of rubidium manganese hexacyanoferrate investigated by x-ray diffraction
,” Eur. J. Inorg. Chem.
2019
, 3142
–3147
.84.
G.
Azzolina
,
R.
Bertoni
,
C.
Mariette
,
M.
Cammarata
,
E.
Trzop
,
C.
Ecolivet
,
M.
Sander
,
M.
Levantino
,
H.
Tokoro
,
K.
Imoto
et al, “
Out-of-equilibrium lattice response to photo-induced charge-transfer in a MnFe Prussian blue analogue
,” J. Mater. Chem. C
9
, 6773
–6780
(2021a
).85.
G.
Azzolina
,
H.
Tokoro
,
K.
Imoto
,
M.
Yoshikiyo
,
S-i
Ohkoshi
, and
E.
Collet
, “
Exploring ultrafast photoswitching pathways in
Prussian blue analogue
,” Angew. Chem.
133
, 23455
–23461
(2021
).86.
K.
Barlow
and
J. O.
Johansson
, “
Ultrafast photoinduced dynamics in Prussian blue analogues
,” Phys. Chem. Chem. Phys.
23
, 8118
–8131
(2021
).87.
R.
Phelps
,
A.
Etcheverry-Berrios
,
E. K.
Brechin
, and
J. O.
Johansson
, “
Equatorial restriction of the photoinduced
switch in
-cyclam complexes
,” Chem. Sci.
14
, 6621
–6630
(2023
).88.
C. O.
Dietrich-Buchecker
,
P. A.
Marnot
,
J.-P.
Sauvage
,
J. R.
Kirchhoff
, and
D. R.
McMillin
, “
Bis (2, 9-diphenyl-1, 10-phenanthroline) copper (I): a copper complex with a long-lived charge-transfer excited state
,” J. Chem. Soc., Chem. Commun.
1983
, 513
–515
.89.
N. A.
Gothard
,
M. W.
Mara
,
J.
Huang
,
J. M.
Szarko
,
B.
Rolczynski
,
J. V.
Lockard
, and
L. X.
Chen
, “
Strong steric hindrance effect on excited state structural dynamics of
diimine complexes
,” J. Phys. Chem. A
116
, 1984
–1992
(2012
).90.
C. E.
McCusker
and
F. N.
Castellano
, “
Design of a long-lifetime, earth-abundant, aqueous compatible
photosensitizer using cooperative steric effects
,” Inorg. Chem.
52
, 8114
–8120
(2013
).91.
L.
Gimeno
,
B. T.
Phelan
,
E. A.
Sprague-Klein
,
T.
Roisnel
,
E.
Blart
,
C.
Gourlaouen
,
L. X.
Chen
, and
Y.
Pellegrin
, “
Bulky and stable copper(I)-phenanthroline complex: Impact of steric strain and symmetry on the excited-state properties
,” Inorg. Chem.
61
, 7296
–7307
(2022
).92.
S. M.
Fatur
,
S. G.
Shepard
,
R. F.
Higgins
,
M. P.
Shores
, and
N. H.
Damrauer
, “
A synthetically tunable system to control MLCT excited-state lifetimes and spin states in iron(II) polypyridines
,” J. Am. Chem. Soc.
139
, 4493
–4505
(2017
).93.
R. A.
Marcus
, “
Electron transfer reactions in chemistry: Theory and experiment (nobel lecture)
,” Angew. Chem. Int. Ed.
32
, 1111
–1121
(1993
).94.
P. F.
Barbara
,
T. J.
Meyer
, and
M. A.
Ratner
, “
Contemporary issues in electron transfer research
,” J. Phys. Chem.
100
, 13148
–13168
(1996
).95.
K.
Kunnus
,
L.
Li
,
C. J.
Titus
,
S. J.
Lee
,
M. E.
Reinhard
,
S.
Koroidov
,
K. S.
Kjaer
,
K.
Hong
,
K.
Ledbetter
,
W. B.
Doriese
et al, “
Chemical control of competing electron transfer pathways in iron tetracyano-polypyridyl photosensitizers
,” Chem. Sci.
11
, 4360
–4373
(2020
).96.
A. Y.
Chan
,
A.
Ghosh
,
J. T.
Yarranton
,
J.
Twilton
,
J.
Jin
,
D. M.
Arias-Rotondo
,
H. A.
Sakai
,
J. K.
McCusker
, and
D. W.
MacMillan
, “
Exploiting the Marcus inverted region for first-row transition metal–based photoredox catalysis
,” Science
382
, 191
–197
(2023
).97.
B. C.
Paulus
,
S. L.
Adelman
,
L. L.
Jamula
, and
J. K.
McCusker
, “
Leveraging excited-state coherence for synthetic control of ultrafast dynamics
,” Nature
582
, 214
–218
(2020
).98.
K.
Barlow
,
J.
Eng
,
I.
Ivalo
,
M.
Coletta
,
E. K.
Brechin
,
T. J.
Penfold
, and
J. O.
Johansson
, “
Photoinduced
switch in
terpyridine complexes
,” Dalton Trans.
51
, 10751
–10757
(2022
).99.
S. R.
Rather
and
G. D.
Scholes
, “
Slow intramolecular vibrational relaxation leads to long-lived excited-state wavepackets
,” J. Phys. Chem. A
120
, 6792
–6799
(2016
).100.
T.
Biskup
, “
Structure–function relationship of organic semiconductors: Detailed insights from time-resolved
spectroscopy
,” Front. Chem.
7
, 10
(2019
).101.
W.
Browett
,
A.
Fucaloro
,
T.
Morgan
, and
P.
Stephens
, “
Magnetic circular dichroism determination of zero-field splitting in chloro (meso-tetraphenylporphinato)
,” J. Am. Chem. Soc.
105
, 1868
–1872
(1983
).102.
B. E.
Williamson
,
T. C.
VanCott
,
M. E.
Boyle
,
G. C.
Misener
,
M. J.
Stillman
, and
P. N.
Schatz
, “
Determination of the ground state of manganese phthalocyanine in an argon matrix using magnetic circular dichroism and absorption spectroscopy
,” J. Am. Chem. Soc.
114
, 2412
–2419
(1992
).103.
K.
Bane
,
R. A.
Geiger
,
S. A.
Chabolla
, and
T. A.
Jackson
, “
Determination of zero-field splitting parameters for a MnIV center using variable-temperature, variable-field magnetic circular dichroism spectroscopy: Comparison to electron paramagnetic resonance spectroscopy
,” Inorg. Chim. Acta
380
, 135
–140
(2012
).104.
J.
Sutcliffe
and
J. O.
Johansson
, “
A femtosecond magnetic circular dichroism spectrometer
,” Rev. Sci. Instrum.
92
, 113001
(2021
).105.
J.
Lu
,
I. O.
Ozel
,
C. A.
Belvin
,
X.
Li
,
G.
Skorupskii
,
L.
Sun
,
B. K.
Ofori-Okai
,
M.
Dincă
,
N.
Gedik
, and
K. A.
Nelson
, “
Rapid and precise determination of zero-field splittings by terahertz time-domain electron paramagnetic resonance spectroscopy
,” Chem. Sci.
8
, 7312
–7323
(2017
).© 2024 Author(s). Published under an exclusive license by AIP Publishing.
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