A series of homoleptic bis(phthalocyaninato) rare earth sandwich complexes with large two-photon absorption cross-section

Changing optical nonlinearities of homoleptic bis(phthalocyaninato) rare earth praseodymium double-decker complexes by the redox reaction

“…As shown the solid line in Fig − electron transitions and n π − electron transitions by the redox reaction [32]. It is noteworthy that all these complexes presented here have the similar linear absorption spectra with other homoleptic substituted bis(phthalocyaninato) rare earth double-decker complexes [17,33].…”

“…At the same time, many efforts are concentrated on elucidating structure-property relationships for the optical refractive and absorptive nonlinearities of sandwich-type rare-earth multiple-decker complexes. It is noteworthy that the optical nonlinearities of materials could be manipulated by the variation of the rare earth atomic radius of complexes [17], the excitation optical intensity [18], the introduction of the metal cations of complexes [19], the annealing process of metallophthalocyanine thin films [20,21], the different peripheral substituents [22], the number of branches of oligothienylenevinylenes [23], as well as the size of nanoparticles [24]. (3).…”

Nonlinear optical behavior of n-tuple decker phthalocyanines at the nanosecond regime: investigation of change in mechanisms

“…Macroheterocyclic tetraazoporphyrin ring complexes can be modied in such a way that the ligands interact with each other via coordination to transition metals and/or lanthanide ions, as is the case with multi-decker phthalocyaninato molecules. Such complexes are also referred to as advanced materials 1 and nd applications in many elds as single-molecule magnets, [2][3][4][5][6][7][8][9][10] sensors, [11][12][13] conductive materials, [14][15][16][17] optical limiters, [18][19][20][21][22][23][24][25][26][27][28] ambipolar organic eld-effect transistors, 29,30 supramolecular spin valves 31 and self-assembled nanostructures. 32,33 Lanthanide double-decker phthalocyanine (LnPc 2 ) complexes, in particular, have been the center of interest in research for a long time.…”

The Primary Demonstration of Exciton Coupling Effects on Optical Limiting Properties of Blue Double‐Decker Lanthanide Phthalocyanine Salts

“…Lanthanide bis(phthalocyanines) (LnPc 2 ) have been employed in a number applications including electrochromic displays, [1,2] electrical conductivity, [3][4][5] electrochromism, [5][6][7][8][9] gas and electrochemical sensing [10][11][12][13][14][15] and optical limiting. [16][17][18][19][20][21][22][23][24][25][26] Other appealing properties stemming from the LnPc 2 complexes include tunable spectroscopic, electronic and redox characteristics, [27,28] allowing their applications as ambipolar organic field-effect transistors, [29] single molecule magnets, [30,31] supramolecular spin valves [32] and self-assembled nanostructures. [33,34] Lanthanide homoleptic sandwich-type phthalocyanines based on terbium, lutetium and dysprosium, [18,35] in particular, have been investigated for both optical limiting and optical switching applications due to their giant third-order hyperpolarizability and two-photon absorption (2-PA) at nanosecond (ns) and femtosecond (fms) regimes.…”