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Channel Rhodopsins

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...

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Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Published on: June 30, 2018

Rod-like nano-light harvester.

Jun Ling¹, Zhicheng Zheng, Anna Köhler

¹MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Makromolekulare Chemie II, Universität Bayreuth, 95440, Bayreuth, Germany.

Macromolecular Rapid Communications

|December 12, 2013

Summary

This summary is machine-generated.

We developed a novel nano-light harvester (NLH) mimicking natural energy cascades. This rod-like polymer structure efficiently absorbs and transfers light energy by controlling donor-acceptor distances.

Keywords:

Förster resonance energy transfer atom transfer radical polymerization (ATRP)cylindrical polymer brushes graft copolymer light harvesting

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Area of Science:

Polymer Chemistry
Nanotechnology
Photophysics

Background:

Natural energy cascade architectures inspire efficient light harvesting.
Developing synthetic systems for light energy management is crucial.

Purpose of the Study:

To design and synthesize a single-molecular rod-like nano-light harvester (NLH).
To mimic natural energy cascade processes for efficient light absorption and transfer.
To investigate the influence of donor-acceptor distance on energy transfer efficiency.

Main Methods:

Synthesis of a cylindrical polymer brush with block copolymer side chains.
Incorporation of (9,9-diethylfluoren-2-yl)methyl methacrylate as energy donors (antennae).
Incorporation of 9-anthracenemethyl methacrylate as energy acceptors (emitters).

Main Results:

The synthesized NLHs demonstrate highly efficient light energy absorption.
Efficient energy transfer was observed within the single-molecular NLH structure.
Tuning the donor-acceptor distance allowed for manipulation of energy transfer dynamics.

Conclusions:

The rod-like NLH effectively mimics natural energy cascade systems.
This polymer-based nanostructure offers a promising platform for advanced light harvesting applications.
Control over energy transfer through structural modification is achievable.