Single-molecule detection of dihydroazulene photo-thermal reaction using break junction technique

Nature Communications
Cancan HuangWenjing Hong

Abstract

Charge transport by tunnelling is one of the most ubiquitous elementary processes in nature. Small structural changes in a molecular junction can lead to significant difference in the single-molecule electronic properties, offering a tremendous opportunity to examine a reaction on the single-molecule scale by monitoring the conductance changes. Here, we explore the potential of the single-molecule break junction technique in the detection of photo-thermal reaction processes of a photochromic dihydroazulene/vinylheptafulvene system. Statistical analysis of the break junction experiments provides a quantitative approach for probing the reaction kinetics and reversibility, including the occurrence of isomerization during the reaction. The product ratios observed when switching the system in the junction does not follow those observed in solution studies (both experiment and theory), suggesting that the junction environment was perturbing the process significantly. This study opens the possibility of using nano-structured environments like molecular junctions to tailor product ratios in chemical reactions.

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Citations

Apr 28, 2018·Chemistry : a European Journal·Yunyun Zhou, Liangliang Zhu
Jan 29, 2019·Angewandte Chemie·Shuning CaiWenjing Hong
Dec 7, 2019·Chemical Communications : Chem Comm·Yusuke HasegawaTomoaki Nishino
Jan 3, 2020·Physical Chemistry Chemical Physics : PCCP·Feifei HuangWenjing Hong
Apr 10, 2020·Angewandte Chemie
Aug 11, 2020·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Youngsang Kim
Jul 28, 2019·Nanoscale Research Letters·Jun-Ren HuangXiao-Shun Zhou
Jun 28, 2019·Science Advances·Xiaoyan HuangWenjing Hong
Nov 21, 2019·Physical Chemistry Chemical Physics : PCCP·Dawei KangCaijuan Xia
Apr 3, 2020·Nanoscale·András MagyarkutiAndrás Halbritter
May 29, 2018·Nanoscale Research Letters·Lin-Lu PengWenbo Chen
Feb 13, 2021·Journal of the American Chemical Society·Hongliang ChenJ Fraser Stoddart
Apr 8, 2021·Advanced Materials·Jie BaiWenjing Hong
May 6, 2021·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Zhikai ZhaoDong Xiang
May 6, 2021·Chemical Communications : Chem Comm·Lu ZhangTomoaki Nishino
Jul 14, 2021·Angewandte Chemie·Yong HuWenjing Hong
Dec 19, 2017·Journal of the American Chemical Society·Jianfeng ZhouYonatan Dubi
Aug 29, 2019·Journal of the American Chemical Society·Chandramalika R PeirisNadim Darwish
Jul 31, 2018·Journal of the American Chemical Society·Jing LiErkang Wang
Jul 3, 2019·The Journal of Physical Chemistry Letters·Mostafa AbediKlaus B Møller
Nov 2, 2021·Advanced Science·Sihai LuoJohn C de Mello

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Methods Mentioned

BETA
surface plasmon resonance
X-ray
NMR

Software Mentioned

CAM
Dalton QCP

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