Acceleration of a nanomotor: electronic control of the rotary speed of a light-driven molecular rotor.

J Am Chem Soc

Department of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.

Published: December 2005

A new second-generation light-driven molecular motor was designed, in which the presence of a potential electronic push-pull system leads to a significant increase of the rate of rotation compared to previous motor systems, without disturbing its overall unidirectionality.

Download full-text PDF

Source
http://dx.doi.org/10.1021/ja054499eDOI Listing

Publication Analysis

Top Keywords

light-driven molecular
8
acceleration nanomotor
4
nanomotor electronic
4
electronic control
4
control rotary
4
rotary speed
4
speed light-driven
4
molecular rotor
4
rotor second-generation
4
second-generation light-driven
4

Similar Publications

Turning the band alignment of carbon dots for visible-light-driven enzymatic asymmetric reduction of aromatic ketone.

Int J Biol Macromol

January 2025

Key Laboratory of Organosilicon Chemistry and Materials Technology, Ministry of Education; College of Materials Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China. Electronic address:

Keto reductases are crucial NAD(P)H-dependent enzymes used for the enantioselective synthesis of alcohols from prochiral ketones. Typically, the NADPH cofactor is regenerated through a second enzyme and/or substrate. However, photocatalytic cofactor regeneration using water as a sacrificial electron and hydrogen donor presents a promising alternative, albeit a challenging one.

View Article and Find Full Text PDF

Recent efforts have focused on developing stimuli-responsive soft actuators that mimic the adaptive, complex, and reversible movements found in natural species. However, most hydrogel actuators are limited by their inability to combine wavelength-selectivity with reprogrammable shape changes, thereby reducing their degree of freedom in motion. To address this challenge, we present a novel strategy that integrates these capabilities by grafting fluorophores onto temperature-responsive hydrogels.

View Article and Find Full Text PDF

Performance and stability analysis of all-perovskite tandem photovoltaics in light-driven electrochemical water splitting.

Nat Commun

January 2025

Molecular Materials and Nanosystems, Institute of Complex Molecular Systems, Eindhoven University of Technology, partner of Solliance, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.

All-perovskite tandem photovoltaics are a potentially cost-effective technology to power chemical fuel production, such as green hydrogen. However, their application is limited by deficits in open-circuit voltage and, more challengingly, poor operational stability of the photovoltaic cell. Here we report a laboratory-scale solar-assisted water-splitting system using an electrochemical flow cell and an all-perovskite tandem solar cell.

View Article and Find Full Text PDF

MOF-Based Dual-Layer Pickering Emulsion: Molecular-Level Gating of Water Delivery at Water-Oil Interface for Efficient Photocatalytic Hydrogenation Using HO as a Hydrogen Source.

Angew Chem Int Ed Engl

January 2025

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China.

Article Synopsis
  • The biphasic system offers a unique approach for complex catalytic processes by combining photocatalysis with hydrogenation, highlighting both its potential and accompanying challenges.
  • Researchers utilized metal-organic frameworks (MOFs) and CdS nanorods to create a dual-layer Pickering emulsion that effectively separates the photocatalytic hydrogen evolution reaction (HER) in the aqueous phase from oil-soluble hydrogenation.
  • This innovative setup achieved an impressive hydrogenation yield of 187.37 mmol·g-1·h-1 and a high apparent quantum yield of 43.24%, demonstrating significant improvements over traditional methods and providing valuable insights for future tandem catalytic processes.
View Article and Find Full Text PDF

Modulating π-bridge in donor-π-acceptor covalent organic frameworks for low-energy-light-driven photocatalytic reaction.

J Colloid Interface Sci

December 2024

Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China. Electronic address:

Most of the photocatalytic reactions are currently driven by high-energy light (UV, blue light), which inevitably leads to side reactions and co-catalyst deactivation. Therefore, there is an urgent need to prepare novel photocatalysts with low-energy photocatalytic properties. Herein, we report a rational molecular design of covalent organic frameworks (COFs) equipped with donor-π-acceptor systems with different π-bridges (aromatic ring, mono- and bis-alkynyl).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!