The
rational
design
of
p-n
heterojunction
is
highly
desirable
to
optimize
electron
distribution
and
photocarriers’
transfer
pathway
at
space-charge
region,
which
would
influence
the
fluorescence
detection.
Herein,
inorganic
perovskite
CsPbBr3
nanocrystals
(CPB
NCs)
encapsulated
into
Pb-centered
MOFs
via
simple
wet-chemical
self-sacrifice
construct
a
“turn-off”
sensor
for
sensitive
detection
NH3·H2O
or
Fe3+
in
aqueous
solution.
M-S,
UPS
DFT
calculation
have
proved
formation
junction
between
derived
parent
Pb-MOF.
CPB⊆Pb-MOF
has
provided
strong
platform
maintain
high
performance
stability
solution
as
sensor.
It
found
that
static
quenching
process
affected
Fe3+.
More
importantly,
occurrence
dynamic
with
also
verified
by
lifetime,
in-situ
XPS
analysis.
phase
taken
major
reason
when
being
introduced
NH3·H2O.
Fortunately,
0.4CPB⊆Pb-MOF
exhibited
best
analytical
What’s
more,
it
been
manufactured
visual
real
environmental
water
samples.
Thereby,
this
based
system
broaden
application
point-to-point
precise
diagnostics.
