Angewandte Chemie,
Год журнала:
2018,
Номер
131(16), С. 5224 - 5243
Опубликована: Авг. 1, 2018
Abstract
The
application
of
photochemistry
to
polymer
and
material
science
has
led
the
development
complex
yet
efficient
systems
for
polymerization,
post‐functionalization,
advanced
materials
production.
Using
light
activate
chemical
reaction
pathways
in
these
not
only
leads
exquisite
control
over
dynamics,
but
also
allows
synthetic
protocols
be
easily
achieved.
Compared
polymerization
mediated
by
thermal,
chemical,
or
electrochemical
means,
photoinduced
can
potentially
offer
more
versatile
methods
macromolecular
synthesis.
We
highlight
utility
as
an
energy
source
mediating
photopolymerization,
present
some
promising
examples
which
are
advancing
production
through
their
exploitation
photochemistry.
Journal of the American Chemical Society,
Год журнала:
2018,
Номер
140(45), С. 15353 - 15365
Опубликована: Окт. 2, 2018
The
targeted
choice
of
specific
photocatalysts
has
been
shown
to
play
a
critical
role
for
the
successful
realization
challenging
photoredox
catalytic
transformations.
Herein,
we
demonstrate
implementation
rational
design
strategy
series
deliberate
structural
manipulations
cyanoarene-based,
purely
organic
donor-acceptor
photocatalysts,
using
1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene
(4CzIPN)
as
starting
point.
Systematic
modifications
both
donor
substituents
well
acceptors'
molecular
core
allowed
us
identify
strongly
oxidizing
reducing
catalysts
(e.g.,
an
unprecedented
detriflation
unactivated
naphthol
triflate),
which
additionally
offer
remarkably
balanced
redox
potentials
with
predictable
trends.
Especially
halogen
arene
substitutions
are
instrumental
our
alterations
catalysts'
properties.
Based
on
their
preeminent
electrochemical
and
photophysical
characteristics,
all
novel,
were
evaluated
in
three
challenging,
mechanistically
distinct
classes
benchmark
reactions
(either
requiring
balanced,
highly
or
properties)
enormous
potential
customizable
that
outperform
complement
prevailing
typical
best
photocatalysts.
Angewandte Chemie International Edition,
Год журнала:
2018,
Номер
58(16), С. 5170 - 5189
Опубликована: Авг. 1, 2018
The
application
of
photochemistry
to
polymer
and
material
science
has
led
the
development
complex
yet
efficient
systems
for
polymerization,
post-functionalization,
advanced
materials
production.
Using
light
activate
chemical
reaction
pathways
in
these
not
only
leads
exquisite
control
over
dynamics,
but
also
allows
synthetic
protocols
be
easily
achieved.
Compared
polymerization
mediated
by
thermal,
chemical,
or
electrochemical
means,
photoinduced
can
potentially
offer
more
versatile
methods
macromolecular
synthesis.
We
highlight
utility
as
an
energy
source
mediating
photopolymerization,
present
some
promising
examples
which
are
advancing
production
through
their
exploitation
photochemistry.
Chemical Reviews,
Год журнала:
2021,
Номер
122(2), С. 2487 - 2649
Опубликована: Ноя. 9, 2021
Redox
processes
are
at
the
heart
of
synthetic
methods
that
rely
on
either
electrochemistry
or
photoredox
catalysis,
but
how
do
and
catalysis
compare?
Both
approaches
provide
access
to
high
energy
intermediates
(e.g.,
radicals)
enable
bond
formations
not
constrained
by
rules
ionic
2
electron
(e)
mechanisms.
Instead,
they
1e
mechanisms
capable
bypassing
electronic
steric
limitations
protecting
group
requirements,
thus
enabling
chemists
disconnect
molecules
in
new
different
ways.
However,
while
providing
similar
intermediates,
differ
several
physical
chemistry
principles.
Understanding
those
differences
can
be
key
designing
transformations
forging
disconnections.
This
review
aims
highlight
these
similarities
between
comparing
their
underlying
principles
describing
impact
electrochemical
photochemical
methods.
Macromolecular Rapid Communications,
Год журнала:
2018,
Номер
40(1)
Опубликована: Окт. 30, 2018
Approaching
25
years
since
its
invention,
atom
transfer
radical
polymerization
(ATRP)
is
established
as
a
powerful
technique
to
prepare
precisely
defined
polymeric
materials.
This
perspective
focuses
on
the
relation
between
structure
and
activity
of
ATRP
catalysts,
consequent
choice
initiating
system,
which
are
paramount
aspects
well-controlled
polymerizations.
The
mechanism
discussed,
including
effect
kinetic
thermodynamic
parameters
side
reactions
affecting
catalyst.
coordination
chemistry
copper
complexes
used
in
reviewed
chronological
order,
while
emphasizing
structure-activity
correlation.
ATRP-initiating
systems
described,
from
normal
low
ppm
Cu
systems.
Most
recent
advancements
regarding
dispersed
media
oxygen-tolerant
techniques
presented,
well
future
opportunities
that
arise
progressively
more
active
catalysts
deeper
mechanistic
understanding.
Journal of the American Chemical Society,
Год журнала:
2018,
Номер
140(31), С. 10016 - 10024
Опубликована: Июль 14, 2018
Highly
conjugated
three-dimensional
covalent
organic
frameworks
(3D
COFs)
were
constructed
based
on
spirobifluorene
cores
linked
via
imine
bonds
(SP-3D-COFs)
with
novel
interlacing
conjugation
systems.
The
crystalline
structures
confirmed
by
powder
X-ray
diffraction
and
detailed
structural
simulation.
A
6-
or
7-fold
interpenetration
was
formed
depending
the
structure
of
linking
units.
obtained
SP-3D-COFs
showed
permanent
porosity
high
thermal
stability.
In
application
for
solar
cells,
simple
bulk
doping
to
perovskite
cells
(PSCs)
substantially
improved
average
power
conversion
efficiency
15.9%
SP-3D-COF
1
18.0%
2
as
compared
reference
undoped
PSC,
while
offering
excellent
leakage
prevention
in
meantime.
By
aid
both
experimental
computational
studies,
a
possible
photoresponsive
perovskite–SP-3D-COFs
interaction
mechanism
proposed
explain
improvement
PSC
performance
after
doping.
Chemical Reviews,
Год журнала:
2021,
Номер
122(2), С. 1830 - 1874
Опубликована: Ноя. 29, 2021
The
development
of
photoinduced
organocatalyzed
atom
transfer
radical
polymerization
(O-ATRP)
has
received
considerable
attention
since
its
introduction
in
2014.
Expanding
on
many
the
advantages
traditional
ATRP,
O-ATRP
allows
well-defined
polymers
to
be
produced
under
mild
reaction
conditions
using
organic
photoredox
catalysts.
As
a
result,
opened
access
range
sensitive
applications
where
use
metal
catalyst
could
concern,
such
as
electronics,
certain
biological
applications,
and
coordinating
monomers.
However,
key
limitations
this
method
remain
necessitate
further
investigation
continue
field.
such,
review
details
achievements
made
to-date
well
future
research
directions
that
will
expand
capabilities
application
landscape
O-ATRP.
Angewandte Chemie International Edition,
Год журнала:
2020,
Номер
60(3), С. 1082 - 1097
Опубликована: Июнь 22, 2020
Organic
photocatalysts
are
emerging
as
viable
and
more
sustainable
tools
than
metal
complexes.
Recently,
the
field
of
organo-photocatalysis
has
experienced
an
explosion
in
terms
applications,
redesign
well-established
systems,
identification
novel
scaffolds.
A
rational
approach
to
structural
modification
different
is
key
accessing
unprecedented
reactivity,
while
improving
their
catalytic
performances.
We
herein
discuss
concepts
underpinning
scaffold
some
most
recently
used
analyze
how
specific
changes
alter
physicochemical
redox
properties.
Chemical Communications,
Год журнала:
2018,
Номер
54(50), С. 6591 - 6606
Опубликована: Янв. 1, 2018
The
necessity
of
sustainable
development
in
the
chemical
industry
has
continuously
drawn
attention
to
find
safe,
environmentally
friendly
and
atom-economic
processes,
which
is
defined
12
principles
green
chemistry.
Merging
photoredox
catalysis
reversible
addition-fragmentation
chain
transfer
(RAFT)
polymerisation,
photoinduced
electron/energy
(PET)-RAFT
process
opened
up
a
new
way
performing
deactivation
radical
polymerisation
for
well-defined
polymer
synthesis
using
light
as
an
external
stimulus.
While
providing
increased
level
control
(spatiotemporal,
wavelength,
intensity
control)
over
PET-RAFT
many
attractive
attributes
(abundant
catalyst
availability,
recyclability,
selectivity
oxygen
tolerance)
be
sustainable,
intriguing
precision
manufacturing
industry.
Macromolecules,
Год журнала:
2018,
Номер
51(19), С. 7421 - 7434
Опубликована: Сен. 25, 2018
The
increasing
impact
of
atom
transfer
radical
polymerization
(ATRP)
in
fields
beyond
traditional
polymer
science
has
necessitated
the
development
alternative
strategies
for
controlling
growth.
Driven
by
applications
that
are
sensitive
to
metal
ion
contamination,
"greener"
methodologies
emerging
as
a
powerful
conventional
ATRP.
Organic
catalysis
represents
major
evolution
ATRP
with
metal-free
systems
holding
significant
potential
user-friendly
methods
utility
biological
and
microelectronic
applications.
In
addition,
shifting
from
combination
thermal
activation/metal
ions/ligands
simpler
organic
catalysis/light
activation
increases
compatibility
functional
monomers
allows
novel
surface
patterning
strategies.
Herein,
we
highlight
key
discoveries
recent
developments
ATRP,
while
providing
perspective
future
opportunities
this
area.
