TY - JOUR
T1 - Möhlau’s Anthradipyrazole Revisited: A New Look at an Old Molecular System
AU - Maspero, A
AU - GIOVENZANA, Giovanni Battista
AU - Masciocchi, N
AU - Palmisano, G
AU - Comotti, A
AU - Sozzani, P
AU - Bassanetti, I
AU - Nardo, L.
PY - 2013
Y1 - 2013
N2 - Two polymorphs of 2,7-dihydrobenzo[1,2,3-
cd:4,5,6-c′d′]diindazole (“dipyrazoloanthracene”; α and β;
DBDI) were isolated and fully characterized by means of
structural X-ray powder diffraction methods, thermal, and
extended spectroscopic analyses. Different interconversion
paths between the two species were evidenced. UV−Vis
absorption, emission, and excitation spectra were measured,
while time-resolved fluorescence studies allowed for the detection of multiple decay processes. In the two species, NH···N hydrogen bonds give rise to manifestly different structures, which, in the rhombohedral β phase, generate permanent porosity. This feature has been further characterized by CO2/N2/CH4 sorption isotherms at different temperatures, highlighting a significant selectivity favoring CO2 trapping.
AB - Two polymorphs of 2,7-dihydrobenzo[1,2,3-
cd:4,5,6-c′d′]diindazole (“dipyrazoloanthracene”; α and β;
DBDI) were isolated and fully characterized by means of
structural X-ray powder diffraction methods, thermal, and
extended spectroscopic analyses. Different interconversion
paths between the two species were evidenced. UV−Vis
absorption, emission, and excitation spectra were measured,
while time-resolved fluorescence studies allowed for the detection of multiple decay processes. In the two species, NH···N hydrogen bonds give rise to manifestly different structures, which, in the rhombohedral β phase, generate permanent porosity. This feature has been further characterized by CO2/N2/CH4 sorption isotherms at different temperatures, highlighting a significant selectivity favoring CO2 trapping.
UR - https://iris.uniupo.it/handle/11579/34540
U2 - 10.1021/cg4011357
DO - 10.1021/cg4011357
M3 - Article
SN - 1528-7483
VL - 13
SP - 4948
EP - 4956
JO - CRYSTAL GROWTH & DESIGN
JF - CRYSTAL GROWTH & DESIGN
IS - 11
ER -