SUPRAMOLECULAR PHOTONICS
Absorbance of light ( nm) by substance
Energy levels of molecular orbitals in formaldehyde (HOMO: Highest Occupied Molecular Orbitals; LUMO: Lowest Unoccupied Molecular Orbitals) and possible electronic transitions
Possible de-excitation pathways of excited molecules
Fluorescent probes The success of fluorescence as an investigative tool in studying the structure and dynamics of matter or living systems arises from the high sensitivity of fluorometric techniques, the specificity of fluorescence characteristics due to the micro environment of the emitting molecule, and the ability of the latter to provide spatial and temporal information.
Various parameters influencing the emission of fluorescence
Information provided by fluorescent probes in various fields
Fluorescent reagent ( Change the position of fluorescent band ) D. Knapton, M. Burnworth, S. J. Rowan, C. Weder, Angew. Chem. Int. Ed. 2006, 45, 5825–5829
Fluorescent reagents
Binding mode Fluorescent reagents for DNA
Optical methods for intercalation analysis
Fluorescence microscopy in intercalation analysis
Fluorescent reagents for DNA
DNA cleavage reagent
PCT cation sensors (Photoinduced Charge Transfer) P. Jiang, Z. Guo, Coordination Chemistry Reviews, 248 (2004) 205–229
PCT cation sensors P. Jiang, Z. Guo, Coordination Chemistry Reviews, 248 (2004) 205–229
M. H. Keefe, K. D. Benkstein, J. T. Hupp, Coordination Chem. Reviews, 205 (2000) 201–228 LMCT cation sensors (Ligand-Metal Charge Transfer)
Cyclodextrin-based sensor system
Excimer-based cation sensors red-shift of the emission spectrum
Excimer-based cation sensors: sensors: non-cyclic ethers with two naphthalenes
Calixarene-basedfluorescent molecular sensors for lead ions
PET systems (Photoinduced Electron Transfer)
PET system Ru-AB-Re 0.93; 1,17 Redox potentials (V)
S. Campagna, C. Di Pietro, F. Loiseau, B. Maubert, N. McClenaghan, R. Passalacqua, F. Puntoriero, V. Ricevuto, S. Serroni, Coordination Chem. Reviews, 229 (2002) 67/74 PET system
Photovoltaic Performance M. Narutaki, K. Takimiya, T. Otsubo, Y. Harima, H. Zhang,Y.Araki, O. Ito, J. Org. Chem. 2006, 71, Al/ organic film /Au covered electrode Photocurrent generated were measured and converted into the incident photon-to-current conversion efficiencies (IPCE).
Side view of multilayer organic EL devices and molecular structures of the materials used Materials for OLED A, B, C, and D corresponding to n = 0, 1, 2 and 3 in FlAMB-1n
Photocontrolled electron transport Lipid bilayer membrane Anthraquinone disulfonic acid disodium salt
Fluorescence resonance energy transfer
Materials for fluorescence resonance energy transfer
Fluorescence resonance energy transfer
A plug – socket system Switching of photoinduced energy transfer by acid/based controlled plug in/plug out of suitable molecular components
Dethreading/rethreading of pseudorotaxanes
A supramolecular system that behaves as a molecular-level extension cable
Photochemically driven molecular machine R. BALLARDINI,V. BALZANI, A. CREDI, M. T. GANDOLFI, M. VENTURI, Acc. Chem. Res. 2001, 34,
Photochemically driven molecular machine
Photochromic systems
Photocontrolled complex formation
Photocontrolled hydrolysis process
Photochromic systems in industry
Conclusions Photonics brings together chemists, materials scientists, physicists, and engineers from both academia and industry to create the organic materials for emerging new electronic and photonic technologies.