00832nam0-22003131i-450-99000206171040332120021010000206171FED01000206171(Aleph)000206171FED0100020617120021010d--------km-y0itay50------baitaInsect virologyKenneth M. Smith.New YorkAcademic Press1967.256 p.24 cmInsetti : VirusVirusVegetaliInsetti : Virologia595.7632.3636.089Smith,Kenneth M.87741ITUNINARICAUNIMARCBK99000206171040332161 IX D.8/062581 (21/4/67)DAGENDAGENInsect virology393053UNINAING0105166nam 2200637 450 991083008230332120230106154559.01-280-85436-797866108543633-527-60732-33-527-60739-0(CKB)1000000000377360(EBL)482150(OCoLC)70159311(SSID)ssj0000221272(PQKBManifestationID)11208466(PQKBTitleCode)TC0000221272(PQKBWorkID)10157605(PQKB)10432812(MiAaPQ)EBC482150(MiAaPQ)EBC7076145(Au-PeEL)EBL7076145(EXLCZ)99100000000037736020230106d2006 uy 0engur|n|---|||||txtccrPhotophysics of molecular materials from single molecules to single crystals /edited by Guglielmo LanzaniWeinheim, Germany :Wiley-VCH,[2006]©20061 online resource (603 p.)Description based upon print version of record.3-527-40456-2 Includes bibliographical references and index.Photophysics of Molecular Materials; Contents; List of Contributors; 1 Introduction; 2 Optical Microscopy and Spectroscopy of Single Molecules; 2.1 Introduction; 2.2 Photophysical Principles of Single-Molecule Fluorescence Detection; 2.2.1 The Single Molecule as a Three-Level System; 2.2.2 Dipole-Dipole Coupled Oscillators; 2.2.2.1 Weak Coupling; 2.2.2.2 Strong Coupling; 2.3 Experimental Techniques; 2.3.1 Signal-to-Noise Considerations; 2.3.2 Room-Temperature Single-Molecule Spectroscopy; 2.3.2.1 Epifluorescence Microscopy; 2.3.2.2 Total Internal Reflection (TIR) Microscopy2.3.2.3 Scanning Confocal Optical Microscopy2.3.2.4 Two-Photon-, 4π- and STED Microscopy; 2.3.2.5 Scanning Near-Field Optical Microscopy; 2.3.3 Single-Molecule Spectroscopy at Cryogenic Temperatures; 2.3.3.1 The Laser System; 2.4 Applications; 2.4.1 Photon Antibunching; 2.4.2 Photon Bunching; 2.4.3 Electronic Coupling Between Molecules; 2.4.4 Single Molecules as Antennas: Orientation; 3 Optical Properties of Single Conjugated Polymer Chains (Polydiacetylenes); 3.1 Introduction; 3.1.1 Motivation for the Study; 3.1.2 Choice of the Experimental System3.1.3 The Isolated Polydiacetylene Chain, Isolated in its Monomer Crystal Matrix3.1.4 Organization of the Chapter; 3.2 A Short Survey of Some PDA Properties; 3.2.1 Possible Electronic Structures of a PDA chain; 3.2.1.1 The Colors of PDA; 3.2.1.2 Ground-State Conformational Differences; 3.2.1.3 Color Transitions; 3.2.2 Spectroscopy of Bulk PDA Crystals; 3.2.2.1 Reflection and Absorption; 3.2.2.2 Electroreflectance; 3.2.2.3 Fluorescence; 3.2.2.4 Two-Photon Absorption; 3.3 The Chosen DA; 3.3.1 The Materials and How They Fulfill the Criteria; 3.3.2 The Samples3.4 Spectroscopy of Isolated Blue Chains3.4.1 Visible Absorption Spectra; 3.4.1.1 Room-Temperature Absorption and Determination of the Polymer Content x(p); 3.4.1.2 Low-Temperature Absorption Spectra; 3.4.1.3 Temperature Dependence; 3.4.2 Electroabsorption; 3.4.2.1 Results; 3.4.2.2 Properties of the Exciton; 3.4.2.3 Exciton Binding Energy; 3.4.2.4 Properties of Electron and Hole; 3.4.2.5 Electroabsorption at Higher Polymer Concentration; 3.4.3 Fluorescence; 3.4.3.1 Emission Spectra; 3.4.3.2 Lifetime of the Emitting State3.4.3.3 Risetime of the Emission: Relaxation Within the Singlet Manifold3.4.4 Nonradiative Relaxation of the (1)B(u) Exciton; 3.4.4.1 Introduction. Experimental Method; 3.4.4.2 Spectra and PA Decay Kinetics; 3.4.4.3 Photobleaching; 3.4.4.4 Nature of the Gap States; 3.4.5 The Lowest Triplet State; 3.4.5.1 Assignment of the 1.35-eV Photoinduced Absorption; 3.4.5.2 Triplet Generation Processes; 3.4.5.3 Triplet Energies and Triplet-Triplet Transition; 3.4.5.4 Triplet Transport Properties; 3.4.6 A High-Energy Exciton; 3.4.7 Summary and Discussion3.4.7.1 Summary of the Main Results Obtained on Isolated Blue PDA ChainsCarbon based pi-conjugated materials offer a broad range of applications, going from molecular electronics and single molecule devices to nanotechnology, plastic electronics and optoelectronics. The proper physical description of such materials is in between that of molecular solids and that of low-dimensional covalent semiconductors. This book is a comprehensive review of their elementary excitations processes and dynamics, which merges the two viewpoints, sometimes very different if not contrasting. In each chapter, a broad tutorial introduction provides a solid physical background tOptical instrumentsNanostructuresOptical instruments.Nanostructures.620.1/1295Lanzani GuglielmoMiAaPQMiAaPQMiAaPQBOOK9910830082303321Photophysics of molecular materials4036321UNINA