Chem, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 1, 2024
Language: Английский
European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113839 - 113839
Published: Feb. 1, 2025
Language: Английский
Citations
0
Published: March 7, 2025
Language: Английский
Citations
0
Molecules, Journal Year: 2024, Volume and Issue: 29(10), P. 2377 - 2377
Published: May 18, 2024
The photocatalyst (PC) zinc tetraphenylporphyrin (ZnTPP) is highly efficient for photoinduced electron/energy transfer reversible addition-fragmentation chain (PET-RAFT) polymerization. However, ZnTPP suffers from poor absorbance of orange light by the so-called Q-band absorption spectrum (maximum wavelength λmax = 600 nm, at which molar extinction coefficient εmax 1.0×104 L/(mol·cm)), hindering photo-curing applications that entail long penetration paths. Over past decade, there has not been any competing candidate in terms efficiency, despite a myriad efforts PC design. By theoretical evaluation, here we rationally introduce peripheral benzo moiety on each pyrrole rings ZnTPP, giving tetraphenyl tetrabenzoporphyrin (ZnTPTBP). This modification only enlarges conjugation length system, but also alters a1u occupied π molecular orbital energy level and breaks accidental degeneracy between a2u orbitals, responsible low intensity Q-band. As consequence, pronounced hyperchromic bathochromic effect (λmax 655 nm 5.2×104 L/(mol·cm)) Q-band, achieved without increasing less useful, peaks PC. Remarkably, this strong takes advantage deep-red (650–700 nm) light, major component solar exhibiting good atmosphere penetration, exploited natural chlorophyll as well. Compared with ZnTPTBP displayed 49% increase PET-RAFT polymerization rate control, marking significant leap area photo-controlled
Language: Английский
Citations
2
Chem, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 1, 2024
Language: Английский
Citations
0