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.