Presentation is loading. Please wait.

Presentation is loading. Please wait.

SUPRAMOLECULAR PHOTONICS. Absorbance of light (190-750 nm) by substance.

Similar presentations


Presentation on theme: "SUPRAMOLECULAR PHOTONICS. Absorbance of light (190-750 nm) by substance."— Presentation transcript:

1 SUPRAMOLECULAR PHOTONICS

2 Absorbance of light (190-750 nm) by substance

3 Energy levels of molecular orbitals in formaldehyde (HOMO: Highest Occupied Molecular Orbitals; LUMO: Lowest Unoccupied Molecular Orbitals) and possible electronic transitions

4

5

6

7 Possible de-excitation pathways of excited molecules

8 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.

9 Various parameters influencing the emission of fluorescence

10 Information provided by fluorescent probes in various fields

11 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

12 Fluorescent reagents

13

14

15 Binding mode Fluorescent reagents for DNA

16

17 Optical methods for intercalation analysis

18 Fluorescence microscopy in intercalation analysis

19 Fluorescent reagents for DNA

20 DNA cleavage reagent

21

22 PCT cation sensors (Photoinduced Charge Transfer) P. Jiang, Z. Guo, Coordination Chemistry Reviews, 248 (2004) 205–229

23 PCT cation sensors P. Jiang, Z. Guo, Coordination Chemistry Reviews, 248 (2004) 205–229

24 M. H. Keefe, K. D. Benkstein, J. T. Hupp, Coordination Chem. Reviews, 205 (2000) 201–228 LMCT cation sensors (Ligand-Metal Charge Transfer)

25 Cyclodextrin-based sensor system

26 Excimer-based cation sensors red-shift of the emission spectrum

27 Excimer-based cation sensors: sensors: non-cyclic ethers with two naphthalenes

28 Calixarene-basedfluorescent molecular sensors for lead ions

29 PET systems (Photoinduced Electron Transfer)

30 PET system Ru-AB-Re 0.93; 1,17 Redox potentials (V)

31 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

32

33

34 Photovoltaic Performance M. Narutaki, K. Takimiya, T. Otsubo, Y. Harima, H. Zhang,Y.Araki, O. Ito, J. Org. Chem. 2006, 71, 1761. Al/ organic film /Au covered electrode Photocurrent generated were measured and converted into the incident photon-to-current conversion efficiencies (IPCE).

35 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

36 Photocontrolled electron transport Lipid bilayer membrane Anthraquinone disulfonic acid disodium salt

37 Fluorescence resonance energy transfer

38 Materials for fluorescence resonance energy transfer

39 Fluorescence resonance energy transfer

40 A plug – socket system Switching of photoinduced energy transfer by acid/based controlled plug in/plug out of suitable molecular components

41 Dethreading/rethreading of pseudorotaxanes

42 A supramolecular system that behaves as a molecular-level extension cable

43 Photochemically driven molecular machine R. BALLARDINI,V. BALZANI, A. CREDI, M. T. GANDOLFI, M. VENTURI, Acc. Chem. Res. 2001, 34, 445-455

44 Photochemically driven molecular machine

45 Photochromic systems

46 Photocontrolled complex formation

47 Photocontrolled hydrolysis process

48 Photochromic systems in industry

49 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.


Download ppt "SUPRAMOLECULAR PHOTONICS. Absorbance of light (190-750 nm) by substance."

Similar presentations


Ads by Google