TY - JOUR
T1 - Pyrene-containing conjugated organic microporous polymers for photocatalytic hydrogen evolution from water
AU - Mohamed, Mohamed Gamal
AU - Elsayed, Mohamed Hammad
AU - Elewa, Ahmed M.
AU - EL-Mahdy, Ahmed F.M.
AU - Yang, Cheng Han
AU - Mohammed, Ahmed A.K.
AU - Chou, Ho Hsiu
AU - Kuo, Shiao Wei
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2021.
PY - 2021/3/21
Y1 - 2021/3/21
N2 - Photoactive conjugated microporous polymers (CMPs) are emerging as porous materials capable of mediating the photocatalytic evolution of H2from water. In this study, we synthesized three pyrene-based CMPs (Py-F-CMP, Py-TPA-CMP, Py-TPE-CMP) through Sonogashira-Hagihara cross-couplings of 1,3,6,8-tetraethynylpyrene (Py-T, as a common monomer building block) with 2,7-dibromo-9H-fluorene (F-Br2), tris(4-bromophenyl)amine (TPA-Br3), and 1,1,2,2-tetrakis(4-bromophenyl)ethene (TPE-Br4), respectively, in the presence of Pd(PPh3)4in DMF/Et3N. We then characterized the chemical structures, crystallinities, thermal stabilities, surface morphologies, and porosities of these three new CMPs. Brunauer-Emmett-Teller (BET) analyses and tests of photocatalytic H2production revealed that Py-TPA-CMP displayed the highest BET surface area (454 m2g−1), highest total pore volume (0.28 cm3g−1), highest H2evolution rate (19 200 μmol h−1g−1), and highest apparent quantum yield (15.3%) when compared with those of Py-F-CMP, Py-TPE-CMP, and other organic porous materials.
AB - Photoactive conjugated microporous polymers (CMPs) are emerging as porous materials capable of mediating the photocatalytic evolution of H2from water. In this study, we synthesized three pyrene-based CMPs (Py-F-CMP, Py-TPA-CMP, Py-TPE-CMP) through Sonogashira-Hagihara cross-couplings of 1,3,6,8-tetraethynylpyrene (Py-T, as a common monomer building block) with 2,7-dibromo-9H-fluorene (F-Br2), tris(4-bromophenyl)amine (TPA-Br3), and 1,1,2,2-tetrakis(4-bromophenyl)ethene (TPE-Br4), respectively, in the presence of Pd(PPh3)4in DMF/Et3N. We then characterized the chemical structures, crystallinities, thermal stabilities, surface morphologies, and porosities of these three new CMPs. Brunauer-Emmett-Teller (BET) analyses and tests of photocatalytic H2production revealed that Py-TPA-CMP displayed the highest BET surface area (454 m2g−1), highest total pore volume (0.28 cm3g−1), highest H2evolution rate (19 200 μmol h−1g−1), and highest apparent quantum yield (15.3%) when compared with those of Py-F-CMP, Py-TPE-CMP, and other organic porous materials.
UR - https://www.scopus.com/pages/publications/85103555136
U2 - 10.1039/d0cy02482a
DO - 10.1039/d0cy02482a
M3 - Article
AN - SCOPUS:85103555136
SN - 2044-4753
VL - 11
SP - 2229
EP - 2241
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
IS - 6
ER -
