Practical Synthesis of Perylene-Monoimide Building Blocks that Possess Features Appropriate for Use in Porphyrin-Based Light-Harvesting Arrays.

ChemInform ◽  
2003 ◽  
Vol 34 (26) ◽  
Author(s):  
Kin-ya Tomizaki ◽  
Patchanita Thamyongkit ◽  
Robert S. Loewe ◽  
Jonathan S. Lindsey
Keyword(s):  
Light Harvesting ◽  
Building Blocks ◽  
Practical Synthesis

Practical synthesis of perylene-monoimide building blocks that possess features appropriate for use in porphyrin-based light-harvesting arrays

Tetrahedron ◽  
2003 ◽  
Vol 59 (8) ◽  
pp. 1191-1207 ◽  
Author(s):  
Kin-ya Tomizaki ◽  
Patchanita Thamyongkit ◽  
Robert S Loewe ◽  
Jonathan S Lindsey
Keyword(s):  
Light Harvesting ◽  
Building Blocks ◽  
Practical Synthesis

scholarly journals Practical Synthesis and Application of Halogen-Doped Pyrrole Building Blocks

ACS Omega ◽  
2021 ◽  
Author(s):  
Andrej Emanuel Cotman ◽  
Thomas Guérin ◽  
Ivana Kovačević ◽  
Davide Benedetto Tiz ◽  
Martina Durcik ◽  
...  
Keyword(s):  
Building Blocks ◽  
Practical Synthesis

scholarly journals Using automated glycan assembly (AGA) for the practical synthesis of heparan sulfate oligosaccharide precursors

2019 ◽  
Vol 17 (7) ◽  
pp. 1817-1821 ◽  
Author(s):  
Darshita Budhadev ◽  
Karinna Saxby ◽  
Julia Walton ◽  
Gideon Davies ◽  
Peter C. Tyler ◽  
...  
Keyword(s):  
Heparan Sulfate ◽  
Building Blocks ◽  
Practical Synthesis

Herein we report synthesis of complex heparan sulfate oligosaccharide precursors by automated glycan assembly using disaccharide donor building blocks.

scholarly journals Microsecond and millisecond dynamics in the photosynthetic protein LHCSR1 observed by single-molecule correlation spectroscopy

2019 ◽  
Vol 116 (23) ◽  
pp. 11247-11252 ◽  
Author(s):  
Toru Kondo ◽  
Jesse B. Gordon ◽  
Alberta Pinnola ◽  
Luca Dall’Osto ◽  
Roberto Bassi ◽  
...  
Keyword(s):  
Correlation Function ◽  
Single Molecule ◽  
Conformational Changes ◽  
Protein Function ◽  
Light Harvesting ◽  
Building Blocks ◽  
Complex Stress ◽  
Correlation Spectroscopy ◽  
Light Harvesting Complex ◽  
Single Molecule Level

Biological systems are subjected to continuous environmental fluctuations, and therefore, flexibility in the structure and function of their protein building blocks is essential for survival. Protein dynamics are often local conformational changes, which allows multiple dynamical processes to occur simultaneously and rapidly in individual proteins. Experiments often average over these dynamics and their multiplicity, preventing identification of the molecular origin and impact on biological function. Green plants survive under high light by quenching excess energy, and Light-Harvesting Complex Stress Related 1 (LHCSR1) is the protein responsible for quenching in moss. Here, we expand an analysis of the correlation function of the fluorescence lifetime by improving the estimation of the lifetime states and by developing a multicomponent model correlation function, and we apply this analysis at the single-molecule level. Through these advances, we resolve previously hidden rapid dynamics, including multiple parallel processes. By applying this technique to LHCSR1, we identify and quantitate parallel dynamics on hundreds of microseconds and tens of milliseconds timescales, likely at two quenching sites within the protein. These sites are individually controlled in response to fluctuations in sunlight, which provides robust regulation of the light-harvesting machinery. Considering our results in combination with previous structural, spectroscopic, and computational data, we propose specific pigments that serve as the quenching sites. These findings, therefore, provide a mechanistic basis for quenching, illustrating the ability of this method to uncover protein function.

scholarly journals A Practical Synthesis of 2,4(5)-Diarylimidazoles from Simple Building Blocks.

ChemInform ◽  
2007 ◽  
Vol 38 (42) ◽  
Author(s):  
Valentiani Zuliani ◽  
Giuseppe Cocconcelli ◽  
Marco Fantini ◽  
Chiara Ghiron ◽  
Mirko Rivara
Keyword(s):  
Building Blocks ◽  
Practical Synthesis

scholarly journals Practical Synthesis of Iodo Phenothiazines. A Facile Access to Electrophore Building Blocks.

ChemInform ◽  
2004 ◽  
Vol 35 (7) ◽  
Author(s):  
Markus Sailer ◽  
Radu-Adrian Gropeanu ◽  
Thomas J. J. Mueller
Keyword(s):  
Building Blocks ◽  
Practical Synthesis

A Practical Synthesis of 2,4(5)-Diarylimidazoles from Simple Building Blocks

2007 ◽  
Vol 72 (12) ◽  
pp. 4551-4553 ◽  
Author(s):  
Valentina Zuliani ◽  
Giuseppe Cocconcelli ◽  
Marco Fantini ◽  
Chiara Ghiron ◽  
Mirko Rivara
Keyword(s):  
Building Blocks ◽  
Practical Synthesis

scholarly journals Efficient light harvesting and photon sensing via engineered cooperative effects

2021 ◽  
Author(s):  
Francesco Mattiotti ◽  
Mohan Sarovar ◽  
Giulio Giuseppe Giusteri ◽  
Fausto Borgonovi ◽  
Giuseppe L Celardo
Keyword(s):  
Functional Role ◽  
Light Harvesting ◽  
Building Blocks ◽  
Cooperative Effects ◽  
Transfer Processes ◽  
Coherent Effects ◽  
Energy Science ◽  
Enhance Efficiency ◽  
Excitonic States ◽  
Light Capture

Abstract Efficient devices for light harvesting and photon sensing are fundamental building blocks of basic energy science and many essential technologies. Recent efforts have turned to biomimicry to design the next generation of light-capturing devices, partially fueled by an appreciation of the fantastic efficiency of the initial stages of natural photosynthetic systems at capturing photons. In such systems extended excitonic states are thought to play a fundamental functional role, inducing cooperative coherent effects, such as superabsorption of light and supertransfer of photoexcitations. Inspired by this observation, we design an artificial light-harvesting and photodetection device that maximally harnesses cooperative effects to enhance efficiency. The design relies on separating absorption and transfer processes (energetically and spatially) in order to overcome the fundamental obstacle to exploiting cooperative effects to enhance light capture: the enhanced emission processes that accompany superabsorption. This engineered separation of processes greatly improves the efficiency and the scalability of the system.

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