Efficient Light Harvesting in Dye-Endcapped Conjugated Polymers Probed by Single Molecule Spectroscopy

2006 ◽  
Vol 128 (19) ◽  
pp. 6468-6479 ◽  
Author(s):  
Klaus Becker ◽  
John M. Lupton
Keyword(s):  
Conjugated Polymers ◽  
Single Molecule ◽  
Light Harvesting ◽  
Single Molecule Spectroscopy

scholarly journals Robust light harvesting by a noisy antenna

2018 ◽  
Vol 20 (6) ◽  
pp. 4360-4372 ◽  
Author(s):  
Pavel Malý ◽  
Alastair T. Gardiner ◽  
Richard J. Cogdell ◽  
Rienk van Grondelle ◽  
Tomáš Mančal
Keyword(s):  
Theoretical Model ◽  
Single Molecule ◽  
Light Harvesting ◽  
Single Molecule Spectroscopy ◽  
Protein Fluctuations

Ultrafast bulk and single-molecule spectroscopy experiments described by a single theoretical model show how protein fluctuations influence photosynthetic light harvesting.

Single Molecule Spectroscopy of Oriented Recombinant Trimeric Light Harvesting Complexes of Higher Plants

2002 ◽  
Vol 3 (4) ◽  
pp. 183-188 ◽  
Author(s):  
Uwe Gerken ◽  
Henriette Wolf-Klein ◽  
Christine Huschenbett ◽  
Britta Götze ◽  
Sebastian Schuler ◽  
...  
Keyword(s):  
Single Molecule ◽  
Light Harvesting ◽  
Higher Plants ◽  
Single Molecule Spectroscopy ◽  
Light Harvesting Complexes

The architecture and function of the light-harvesting apparatus of purple bacteria: from single molecules to in vivo membranes

2006 ◽  
Vol 39 (3) ◽  
pp. 227-324 ◽  
Author(s):  
Richard J. Cogdell ◽  
Andrew Gall ◽  
Jürgen Köhler
Keyword(s):  
Quantum Mechanics ◽  
Energy Transfer ◽  
Single Molecule ◽  
Molecular Mechanisms ◽  
Light Harvesting ◽  
Structural Information ◽  
Purple Bacteria ◽  
Theoretical Background ◽  
Single Molecule Spectroscopy

1. Introduction 2292. Structures 2342.1 The structure of LH2 2342.2 Natural variants of peripheral antenna complexes 2422.3 RC–LH1 complexes 2423. Spectroscopy 2493.1 Steady-state spectroscopy 2493.2 Factors which affect the position of the Qy absorption band of Bchla 2494. Regulation of biosynthesis and assembly 2574.1 Regulation 2574.1.1 Oxygen 2574.1.2 Light 2584.1.2.1 AppA: blue-light-mediated regulation 2594.1.2.2 Bacteriophytochromes 2594.1.3 From the RC to the mature PSU 2614.2 Assembly 2614.2.1 LH1 2624.2.2 LH2 2635. Frenkel excitons 2655.1 General 2655.2 B800 2675.3 B850 2675.4 B850 delocalization 2736. Energy-transfer pathways: experimental results 2746.1 Theoretical background 2746.2 ‘Follow the excitation energy’ 2766.2.1 Bchla→Bchla energy transfer 2776.2.1.1 B800→B800 2776.2.1.2 B800→B850 2786.2.1.3 B850→B850 2796.2.1.4 B850→B875 2806.2.1.5 B875→RC 2806.2.2 Car[harr ]Bchla energy transfer 2817. Single-molecule spectroscopy 2847.1 Introduction to single-molecule spectroscopy 2847.2 Single-molecule spectroscopy on LH2 2857.2.1 Overview 2857.2.2 B800 2867.2.2.1 General 2867.2.2.2 Intra- and intercomplex disorder of site energies 2877.2.2.3 Electron-phonon coupling 2897.2.2.4 B800→B800 energy transfer revisited 2907.2.3 B850 2938. Quantum mechanics and the purple bacteria LH system 2989. Appendix 2999.1 A crash course on quantum mechanics 2999.2 Interacting dimers 30510. Acknowledgements 30611. References 307This review describes the structures of the two major integral membrane pigment complexes, the RC–LH1 ‘core’ and LH2 complexes, which together make up the light-harvesting system present in typical purple photosynthetic bacteria. The antenna complexes serve to absorb incident solar radiation and to transfer it to the reaction centres, where it is used to ‘power’ the photosynthetic redox reaction and ultimately leads to the synthesis of ATP. Our current understanding of the biosynthesis and assembly of the LH and RC complexes is described, with special emphasis on the roles of the newly described bacteriophytochromes. Using both the structural information and that obtained from a wide variety of biophysical techniques, the details of each of the different energy-transfer reactions that occur, between the absorption of a photon and the charge separation in the RC, are described. Special emphasis is given to show how the use of single-molecule spectroscopy has provided a more detailed understanding of the molecular mechanisms involved in the energy-transfer processes. We have tried, with the help of an Appendix, to make the details of the quantum mechanics that are required to appreciate these molecular mechanisms, accessible to mathematically illiterate biologists. The elegance of the purple bacterial light-harvesting system lies in the way in which it has cleverly exploited quantum mechanics.

Single-Molecule Spectroscopy of Conjugated Polymers

2005 ◽  
Vol 38 (7) ◽  
pp. 602-610 ◽  
Author(s):  
Paul F. Barbara ◽  
Andre J. Gesquiere ◽  
So-Jung Park ◽  
Young Jong Lee
Keyword(s):  
Conjugated Polymers ◽  
Single Molecule ◽  
Single Molecule Spectroscopy

scholarly journals Effects of molecular architecture on morphology and photophysics in conjugated polymers: from single molecules to bulk

2018 ◽  
Vol 9 (5) ◽  
pp. 1101-1111 ◽  
Author(s):  
Zhongjian Hu ◽  
Beiyue Shao ◽  
Geoffrey T. Geberth ◽  
David A. Vanden Bout
Keyword(s):  
Conjugated Polymers ◽  
Single Molecule ◽  
Single Molecules ◽  
Single Molecule Spectroscopy ◽  
Molecular Architecture ◽  
Length Scales ◽  
Multiple Length Scales ◽  
Molecular Architectures

A definitive comprehension of morphology and photophysics in conjugated polymers at multiple length scales demands both single molecule spectroscopy and well-controlled molecular architectures.

Single-Molecule Spectroscopy of Conjugated Polymers

ChemInform ◽  
2005 ◽  
Vol 36 (39) ◽  
Author(s):  
Paul F. Barbara ◽  
Andre J. Gesquiere ◽  
So-Jung Park ◽  
Young Jong Lee
Keyword(s):  
Conjugated Polymers ◽  
Single Molecule ◽  
Single Molecule Spectroscopy
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