The
construction
of
heat-resistant
fused
heterocyclic
compounds
are
increasingly
fascinating
in
the
field
energetic
materials
not
only
because
it
usually
behaves
high
density
but
also
shows
excellent
energy,
thermal
stability
and
low
sensitivity.
In
present
study,
a
novel
imidazo[1,2-b]pyridazine
ring-based
explosive,
3,7-dinitroimidazo[1,2-b]pyridazine-6,8-diamine
(4)
was
synthesized
by
three-step
facile
method.
Compound
4
has
(1.856
g•cm-3)
sensitivity
(IS
=40
J,
FS
=
350
N).
Meanwhile,
good
decomposition
temperature
324°C,
which
is
superior
to
conventional
heat
resistant
explosive
HNS
(Td
318°C).
addition,
detonation
performance
compound
(D=8336
m•s-1,
P=27.25
GPa)
significantly
better
than
both
TNT
(D=6881
P=19.5
(D=7612
P=24.3GPa).
Theoretical
analysis
that
effect
“NH2-NO2-NH2”
intramolecular
hydrogen
bonding
interaction
may
be
main
reason
for
causing
heat-resistance
imidazolopyridazine
materials.
results
suggest
promising
building
block
candidate
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 24, 2024
Developing
advanced
metal-free
nitrogen-enriched
primary
explosives
is
challenging
due
to
the
inherent
risks
associated
with
their
synthesis
and
handling.
However,
there
an
urgent
need
develop
novel
lead-free,
nitrogen-rich
that
offer
balanced
energetic
properties.
C-N
bonded
bicyclic
compound
3-azido-1-(1
Polymers for Advanced Technologies,
Journal Year:
2024,
Volume and Issue:
35(3)
Published: March 1, 2024
Abstract
A
series
of
poly(lactic
acid)
(PLA)
films
that
including
fully
paraben
substituted
triazine
derivatives
having
anti‐bacterial
properties
have
been
prepared
by
utilizing
the
solvent‐casting
method.
PLA
as
biodegradable
polymer,
poly(ethylene
glycol)
(PEG)
a
plasticizing
agent
and
s‐triazine
molecules
(TA01,
TA02,
TA03,
TA04,
TA05)
behaving
an
component
utilized
in
experiments.
The
influence
TA
compounds
on
antibacterial
performance
PLA/PEG
was
investigated
for
first
time
against
Gram‐negative
Escherichia
coli
(E.
)
Gram‐positive
Staphylococcus
aureus
(S.
bacteria
via
contact
active
TA01‐03‐05
incorporated
gave
best
results
E.coli
log10
reductions
these
were
0.78,
0.64,
0.65
respectively.
effect
cell
viability
cancer
non‐cancerous
lines
using
MTS
assay.
showed
had
positive
growth
cells,
while
they
negative
cells.
Furthermore,
addition
considerably
increased
decomposition
temperatures
from
349°
to
361°
char
yield
film
2.3
PLA/PEG/TA05.
All
good
transparency
low
opacity
which
7.2
pure
used
control
maximum
value
11.2
observed
PLA/PEG/01.
TA03
TA04
caused
decrement
water
vapor
permission
when
compared
1439
749
664.
It
also
lost
weight
rapidly
over
during
degradation
tests.
On
other
hand,
loss
wasn't
PLA/PEG/TA
films.
This
study
focused
demonstrating
use
our
new,
flexible
food
medical
packaging.
Defence Technology,
Journal Year:
2024,
Volume and Issue:
41, P. 13 - 21
Published: June 18, 2024
5-amino-4-nitrobenzo[1,2-c:3,4-c']bis([1,2,5]oxadiazole)1,6-dioxide
(CL-18)
exhibits
significant
potential
as
an
initiating
explosive.
However,
its
current
synthesis
process
remains
non-scalable
due
to
low
yields
and
safety
risks.
In
this
study,
we
have
developed
a
simple
safe
synthetic
route
for
CL-18.
It
was
synthesized
from
3,5-dihaloanisole
in
four-step
reaction
with
overall
yield
exceeding
60%,
surpassing
all
reported
the
literature.
Subsequently,
recrystallization
of
CL-18
successfully
achieved
by
carefully
selecting
appropriate
solvents
antisolvents
reduce
mechanical
sensitivity.
Ultimately,
when
DMF-ethanol
employed
solvent
system,
satisfactory
product
(>90%)
reduced
sensitivity
(IS
=
15
J;
FS
216
N)
were
obtained.
Additionally,
is
derived
rearrangement
oxygen
atoms
on
i-CL-18
furoxan,
comparative
analysis
their
physicochemical
properties
conducted.
The
thermal
stability
both
compounds
similar,
onset
decomposition
temperatures
recorded
at
186
182
°C
respectively.
Similarly,
they
exhibit
5
s
breaking
point
236
237
°C.
present
novel
insights
into
positional-isomerization-laser-ignition
performance
isomer
using
laser
irradiation
first
time.
Remarkably,
our
findings
demonstrate
that
enhanced
sensitivity,
it
can
be
directly
ignited
1064
nm
wavelength
laser,
whereas
lacks
characteristic.
New Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
48(41), P. 18014 - 18021
Published: Jan. 1, 2024
A
series
of
energetic
coordination
polymers
has
been
synthesized
by
incorporating
dinitromethyltetrazole
with
alkali
metals
(Na,
K,
Rb
and
Cs),
which
have
potential
applications
in
laser
initiating
high
explosives.
The
construction
of
heat-resistant
fused
heterocyclic
compounds
are
increasingly
fascinating
in
the
field
energetic
materials
not
only
because
it
usually
behaves
high
density
but
also
shows
excellent
energy,
thermal
stability
and
low
sensitivity.
In
present
study,
a
novel
imidazo[1,2-b]pyridazine
ring-based
explosive,
3,7-dinitroimidazo[1,2-b]pyridazine-6,8-diamine
(4)
was
synthesized
by
three-step
facile
method.
Compound
4
has
(1.856
g•cm-3)
sensitivity
(IS
=40
J,
FS
=
350
N).
Meanwhile,
good
decomposition
temperature
324°C,
which
is
superior
to
conventional
heat
resistant
explosive
HNS
(Td
318°C).
addition,
detonation
performance
compound
(D=8336
m•s-1,
P=27.25
GPa)
significantly
better
than
both
TNT
(D=6881
P=19.5
(D=7612
P=24.3GPa).
Theoretical
analysis
that
effect
“NH2-NO2-NH2”
intramolecular
hydrogen
bonding
interaction
may
be
main
reason
for
causing
heat-resistance
imidazolopyridazine
materials.
results
suggest
promising
building
block
candidate
