The
UV/Vis
absorption
energies
(νmax)
of
different
solvatochromic
probes
measured
in
co-solvent/water
mixtures
are
analysed
as
a
function
the
average
molar
concentration
(Nav)
solvent
composition.
Nav
is
discussed
terms
underlying
mass
(mol
or
average)
mixture.
ET(30)
Reichardt`s
dye
B30
focus
analysis.
Methanol,
ethanol,
1,2-ethanediol,
2-propanol,
2-methyl-2-propanol,
2-butoxyethanol,
formamide,
N-methylformamide
(NMF),
dimethylformamide
(DMF),
N-formylmorpholine
(NFM),
1,4-dioxane
and
DMSO
were
used
co-solvents.
Significant
linear
dependencies
can
be
demonstrated
for
formamide/water,
1,2-ethanediol/water,
NMF/water
DMSO/water
over
whole
composition
range.
These
belong
to
group
solvents
that
do
not
enhance
water
structure
according
Marcus
classification.
specifics
1,4-dioxane/water
discussed.
For
alcohol/water
with
enhanced
structure,
influence
microstructure
on
particularly
evident.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(32)
Опубликована: Май 17, 2024
Abstract
Over
79
%
of
6.3
billion
tonnes
plastics
produced
from
1950
to
2015
have
been
disposed
in
landfills
or
found
their
way
the
oceans,
where
they
will
reside
for
up
hundreds
years
before
being
decomposed
bringing
upon
significant
dangers
our
health
and
ecosystems.
Plastic
photoreforming
offers
an
appealing
alternative
by
using
solar
energy
water
transform
plastic
waste
into
value‐added
chemical
commodities,
while
simultaneously
producing
green
hydrogen
via
evolution
reaction.
This
review
aims
provide
overview
underlying
principles
emerging
technologies,
highlight
challenges
associated
with
experimental
protocols
performance
assessments,
discuss
recent
global
breakthroughs
on
plastics,
propose
perspectives
future
research.
A
critical
assessment
current
studies
shows
a
lack
standardised
conditions,
hindering
comparison
amongst
photocatalyst
performance.
Guidelines
establish
more
accurate
evaluation
materials
systems
are
proposed,
aim
facilitate
translation
promising
fundamental
discovery
photocatalysts
design.
Liquids,
Год журнала:
2024,
Номер
4(1), С. 191 - 230
Опубликована: Фев. 17, 2024
The
UV/Vis
absorption
energies
(νmax)
of
different
solvatochromic
probes
measured
in
co-solvent/water
mixtures
are
re-analyzed
as
a
function
the
average
molar
concentration
(Nav)
solvent
composition
compared
to
use
mole
fraction.
empirical
ET(30)
parameter
Reichardt’s
dye
B30
is
focus
analysis.
Marcus
classification
aqueous
useful
guide
for
co-solvent
selection.
Methanol,
ethanol,
1,2-ethanediol,
2-propanol,
2-methyl-2-propanol,
2-butoxyethanol,
formamide,
N-methylformamide
(NMF),
N,N-dimethylformamide
(DMF),
N-formylmorpholine
(NFM),
1,4-dioxane
and
DMSO
were
considered
co-solvents.
values
binary
discussed
relation
physical
properties
terms
quantitative
composition,
refractive
index,
thermodynamics
mixture
non-uniformity
mixture.
Significant
linear
dependencies
Nav
can
be
demonstrated
formamide/water,
1,2-ethanediol/water,
NMF/water
DMSO/water
over
entire
compositional
range.
These
belong
group
solvents
that
do
not
enhance
water
structure
according
classification.
influence
microstructure
on
non-linearity
particularly
clear
alcohol/water
with
an
enhanced
structure.
IUCrJ,
Год журнала:
2024,
Номер
11(4), С. 528 - 537
Опубликована: Июнь 4, 2024
To
date,
accurate
modelling
of
the
solvation
process
is
challenging,
often
over-simplifying
solvent-solute
interactions.
The
interplay
between
molecular
arrangement
associated
with
and
crystal
nucleation
has
been
investigated
by
analysis
piezo-solvatochromic
behaviour
Reichardt's
dye,
ET(1),
in
methanol,
ethanol
acetone
under
high
pressure.
High-pressure
single-crystal
X-ray
diffraction
UV-Vis
spectroscopy
reveal
impact
solute-solvent
interactions
on
optical
properties
ET(1).
study
underscores
intricate
relationship
solvent
properties,
conformation
packing.
connection
liquid
solid
phases
emphasizes
capabilities
high-pressure
methods
for
expanding
field
engineering.
environment
allowed
determination
structures
reported
here
that
are
built
from
organic
molecules
fourfold
solvated
or
methanol:
ET(1)·4CH
Liquids,
Год журнала:
2024,
Номер
4(2), С. 352 - 381
Опубликована: Апрель 9, 2024
An
overview
of
solvent
replacement
strategies
shows
that
there
is
great
progress
in
green
chemistry
for
replacing
hazardous
di-polar
aprotic
solvents,
such
as
N,N-dimethylformamide
(DMF),
1-methyl-2-pyrrolidinone
(NMP),
and
1,4-dioxane
(DI),
used
processing
active
industrial
ingredients
(APIs).
In
synthetic
chemistry,
alcohols,
carbonates,
ethers,
eucalyptol,
glycols,
furans,
ketones,
cycloalkanones,
lactones,
pyrrolidinone
or
mixtures,
2-methyl
tetrahydrofuran
methanol,
HCl
cyclopentyl
methyl
ether,
trifluoroacetic
acid
propylene
carbonate
surfactant
water
(no
organic
solvents)
are
suggested
solvents.
For
the
dichloromethane
(DCM)
chromatography,
ethyl
acetate
ethanol
2-propanol
heptanes,
with
without
acetic
ammonium
hydroxide
additives,
suggested,
along
methanol
tert-butyl
cyclohexane,
CO2-ethyl
acetate,
CO2-methanol,
CO2-acetone,
CO2-isopropanol.
Supercritical
CO2
(scCO2)
can
be
to
replace
many
solvents
materials
from
natural
sources.
Vegetable,
drupe,
legume,
seed
oils
co-extractants
(mixed
substrate
before
extraction)
typical
co-solvents
(ethanol,
acetone)
scCO2
extraction.
Mixed
consisting
a
hydrogen
bond
donor
(HBD)
acceptor
(HBA)
not
addressed
GSK
CHEM21
guides.
Published
data
100
water-soluble
water-insoluble
APIs
mono-solvents
show
polarity
ranges
appropriate
mixed
When
used,
possible
HBA
candidate
acetone,
acid,
acetonitrile,
ethanol,
tetrahydrofuran,
2,2,5,5-tetramethyloxolane,
dimethylisosorbide,
Cyrene,
Cygnet
0.0,
diformylxylose.
alcohol
candidates
cyclopentanone,
esters,
lactone,
eucalytol,
MeSesamol,
HBA—HBA
Cyrene—Cygnet
could
provide
interesting
new
combinations.
Solubility
parameters,
Reichardt
polarity,
Kamlet—Taft
linear
solvation
energy
relationships
practical
ways
identifying
applicable
API
systems.
Journal of Fluorescence,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 10, 2024
It
was
demonstrated
that
9-aryl-substituted
isoquinolinium
derivatives
have
significantly
increased
fluorescence
quantum
yields
in
halogenated
solvents,
mostly
pronounced
chloroalkanes,
which
appears
to
be
specific
for
this
type
of
solvents.
Further
analysis
with
selected
solvents
revealed
the
and
number
halogen
substituents
dielectric
constant
solvent
a
distinct
impact
on
emission
yield.
The
effect
is
explained
by
solvation
charge
shift
(CS)
state
attractive
halogen-π
interactions
(halogen
bond),
impedes
torsional
relaxation
excited
state.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(32)
Опубликована: Май 17, 2024
Abstract
Over
79
%
of
6.3
billion
tonnes
plastics
produced
from
1950
to
2015
have
been
disposed
in
landfills
or
found
their
way
the
oceans,
where
they
will
reside
for
up
hundreds
years
before
being
decomposed
bringing
upon
significant
dangers
our
health
and
ecosystems.
Plastic
photoreforming
offers
an
appealing
alternative
by
using
solar
energy
water
transform
plastic
waste
into
value‐added
chemical
commodities,
while
simultaneously
producing
green
hydrogen
via
evolution
reaction.
This
review
aims
provide
overview
underlying
principles
emerging
technologies,
highlight
challenges
associated
with
experimental
protocols
performance
assessments,
discuss
recent
global
breakthroughs
on
plastics,
propose
perspectives
future
research.
A
critical
assessment
current
studies
shows
a
lack
standardised
conditions,
hindering
comparison
amongst
photocatalyst
performance.
Guidelines
establish
more
accurate
evaluation
materials
systems
are
proposed,
aim
facilitate
translation
promising
fundamental
discovery
photocatalysts
design.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(3), С. 1534 - 1542
Опубликована: Янв. 15, 2024
Three
bipyridinium
phenolates
were
synthesized,
and
their
spectral
behavior
was
recorded
at
various
solvent
polarities
compared
to
a
classic
pyridinium
phenolate
dye
possessing
only
one
acceptor
ring
in
its
structure.
The
addition
of
second
unit
the
solvatochromic
core
results
an
unexpected
change
from
negative
solvatochromism
(displacement
absorption
band
shorter
wavelengths)
inverted
solvatochromism,
characterized
by
transition
positive
longer
moderate
polarities.
