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Title: Final Report: Biomimetic Templated Self-Assembly of Light Harvesting Nanostructures

Abstract

In this project we were interested in studying the self-assembly of supramolecular antenna-like structures with very specific features using block copolymers as templates. This system mimics naturally-occurring ultra-efficient light harvesting antennas found in Green Sulfur Bacteria, so-called Chlorosomes. The complex organization of these antennas, which are composed of small organic chromophores (BacterioChlorophyl C in this case) is dictated by the shape of the mesostructure as well as the internal interactions between the chromophores themselves and the polymer-chromophore interactions. With this in mind, the overall aim of this project is to find which are the design rules for creating tailored antenna–like assemblies. A desired outcome would be to use single molecules that have already been shown to be functional and incorporate them to block copolymers to obtain the desired enhanced functionality. We have come a long way into understanding how to achieve this as shown in this report, both theoretically and experimentally. Along the way, we were also interested in developing new computational techniques for studying such self-assembly processes and insights from this system that may be of help in other fields. Such has been the case and we have discovered new phases of self-assembling matter, their limits and those ofmore » active matter as well.« less

Authors:
 [1]
  1. Massachusetts Institute of Technology
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Contributing Org.:
Massachusetts Institute of Technology
OSTI Identifier:
1557669
Report Number(s):
DOE-MIT-46919
DOE Contract Number:  
ER46919; SC0010428
Resource Type:
Technical Report
Resource Relation:
Related Information: Anisotropic nanoparticle distribution in block copolymer model defects, YongJoo Kim and Alfredo Alexander-Katz, Macromolecules (2017) arXiv:1707.08959v2 Block copolymer templated self-assembly of disk-shaped molecules JL Aragones, A Alexander-Katz The Journal of chemical physics 147 (5), 054905 Limits of Directed Self-Assembly in Block Copolymers KR Gadelrab, Y Ding, R Pablo-Pedro, H Chen, KW Gotrik, DG Tempel, CA Ross, A Alexander-Katz Nano letters 18 (6), 3766-3772 Emergent symmetries in block copolymer epitaxy Y Ding, KR Gadelrab, KM Rodriguez, H Huang, CA Ross, A Alexander-Katz Nature communications 10 (1), 2974 Dissipative Particle Dynamics for Directed Self-Assembly of Block Copolymers H Huang, A Alexander-Katz (2019) accepted, preprint arXiv:1907.01044. Artificial tribotactic microscopic walkers: walking based on friction gradients, J. Steimel, J. L. Aragones and A. Alexander-Katz, Phys. Rev. Lett. 113, 178101 (2014). Elasticity-induced force reversal between active spinning particles in dense media, J. L. Aragones, J. Steimel, and A. Alexander-Katz, Nature Commun. 7:11325 (2016). Emergent ultra–long-range interactions between active particles in hybrid active–inactive systems, J. Steimel, J. L. Aragones, Helen Hu, Naser Qureshi, and A. Alexander-Katz, PNAS. Vol. 113 (17) 4652-4657 (2016). Aggregation dynamics of active rotating particles in dense passive media JL Aragones, JP Steimel, A Alexander-Katz Soft matter 15 (19), 3929-3937 Diffusion of self-propelled particles in complex media JL Aragones, S Yazdi, A Alexander-Katz Physical Review Fluids 3 (8), 083301
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Alexander-Katz, Alfredo. Final Report: Biomimetic Templated Self-Assembly of Light Harvesting Nanostructures. United States: N. p., 2018. Web. doi:10.2172/1557669.
Alexander-Katz, Alfredo. Final Report: Biomimetic Templated Self-Assembly of Light Harvesting Nanostructures. United States. doi:10.2172/1557669.
Alexander-Katz, Alfredo. Mon . "Final Report: Biomimetic Templated Self-Assembly of Light Harvesting Nanostructures". United States. doi:10.2172/1557669. https://www.osti.gov/servlets/purl/1557669.
@article{osti_1557669,
title = {Final Report: Biomimetic Templated Self-Assembly of Light Harvesting Nanostructures},
author = {Alexander-Katz, Alfredo},
abstractNote = {In this project we were interested in studying the self-assembly of supramolecular antenna-like structures with very specific features using block copolymers as templates. This system mimics naturally-occurring ultra-efficient light harvesting antennas found in Green Sulfur Bacteria, so-called Chlorosomes. The complex organization of these antennas, which are composed of small organic chromophores (BacterioChlorophyl C in this case) is dictated by the shape of the mesostructure as well as the internal interactions between the chromophores themselves and the polymer-chromophore interactions. With this in mind, the overall aim of this project is to find which are the design rules for creating tailored antenna–like assemblies. A desired outcome would be to use single molecules that have already been shown to be functional and incorporate them to block copolymers to obtain the desired enhanced functionality. We have come a long way into understanding how to achieve this as shown in this report, both theoretically and experimentally. Along the way, we were also interested in developing new computational techniques for studying such self-assembly processes and insights from this system that may be of help in other fields. Such has been the case and we have discovered new phases of self-assembling matter, their limits and those of active matter as well.},
doi = {10.2172/1557669},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}