The excited state behavior of Group IA alkaline-metal phthalocyanines revealed by photoluminescence and singlet oxygen formation

Liu，Limin1; Zhang，Xian Fu2

2022-01-05

10.1016/j.saa.2021.120297

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY   影响因子和分区

1386-1425

Group IA alkaline-metal phthalocyanine (Pc) complexes (LiPc, NaPc, KPc, RbPc, CsPc) have been synthesized and purified to study their excited state behavior. Their UV–Vis electronic absorption spectra, fluorescence emission and excitation spectra, fluorescence quantum yields and lifetimes, as well as singlet oxygen formation quantum yields have been measured in DMF. These photophysical properties are compared with that of HPc. The fluorescence and singlet oxygen formation properties reveal that alkaline metal Pcs show weak heavy atom effect. The results also reveal that alkaline-metal Pcs (NaPc, KPc, RbPc, and CsPc) show very different excited singlet state (S) behavior from that of LiPC and HPc. While S decay of LiPC is mainly via intersystem crossing and fluorescence, the S decay of MPc (M = Na, K, Rb, Cs) is mainly metal ion dissociation: MPc(S) → 2 M + [Pc](S), in addition to the intersystem crossing.

Fluorescence lifetime Fluorescence spectra Group IA metal phthalocyanine Singlet oxygen formation UV–Vis absorption

SCI ; EI

英语

其他

WOS:000701842600021

20213510832084

Excited states ; Fluorescence ; Metal ions ; Metals ; Microcomputers ; Quantum theory ; Quantum yield ; Synthesis (chemical)

Metallurgy:531.1 ; Digital Computers and Systems:722.4 ; Light/Optics:741.1 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

CHEMISTRY

2-s2.0-85113650427

Scopus

1.School of Chemical Engineering,Anhui University of Science and Technology,Huainan,232001,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Liu，Limin,Zhang，Xian Fu. The excited state behavior of Group IA alkaline-metal phthalocyanines revealed by photoluminescence and singlet oxygen formation[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2022,264.

Liu，Limin,&Zhang，Xian Fu.(2022).The excited state behavior of Group IA alkaline-metal phthalocyanines revealed by photoluminescence and singlet oxygen formation.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,264.

Liu，Limin,et al."The excited state behavior of Group IA alkaline-metal phthalocyanines revealed by photoluminescence and singlet oxygen formation".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 264(2022).