Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure

Abstract Using photoemission spectroscopy (PES), we have systematically investigated the behavior of polar organic molecule, chloroaluminum phthalocyanine (ClAlPc), adsorbed in the Cl-down configuration on the Ag(111) substrate at low temperature − 195 °C under UV irradiation with a range of differe...

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Autores principales:	Kowsalya Arumugam, Abhishake Goyal, Hong-Ming Chen, Jing-Huan Dai, Mau-Fu Gao, Yasuo Nakayama, Tun-Wen Pi, Theodoros A. Papadopoulos, Horng-Tay Jeng, Shu-Jung Tang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2dc3236186354a0782f4f51cd5910f2a
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spelling	oai:doaj.org-article:2dc3236186354a0782f4f51cd5910f2a2021-12-02T17:41:31ZOptomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure10.1038/s41598-021-92046-w2045-2322https://doaj.org/article/2dc3236186354a0782f4f51cd5910f2a2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92046-whttps://doaj.org/toc/2045-2322Abstract Using photoemission spectroscopy (PES), we have systematically investigated the behavior of polar organic molecule, chloroaluminum phthalocyanine (ClAlPc), adsorbed in the Cl-down configuration on the Ag(111) substrate at low temperature − 195 °C under UV irradiation with a range of different photon fluxes. Judging from the evolution of photoemission spectral line shapes of molecular energy states, we discovered that the Cl atoms are so robustly anchored at Ag(111) that the impinging photons cannot flip the ClAlPc molecules, but instead they crouch them down due to radiation pressure; we observe that the phthalocyanine (Pc) lobes bend down to interact with Ag atoms on the substrate and induce charge transfer from them. As photon flux is increased, radiation pressure on the Pc plane initiates tunneling of the Cl atom through the molecular plane to turn the adsorption configuration of ClAlPc from Cl-down to an upheld Cl-up configuration, elucidating an optomechanical way of manipulating the dipole direction of polar molecules. Finally, work function measurements provide a distinct signature of the resulting upheld Cl-up configuration as it leads to a large increase in vacuum level (VL), ~ 0.4 eV higher than that of a typical flat-on Cl-up configuration driven by thermal annealing.Kowsalya ArumugamAbhishake GoyalHong-Ming ChenJing-Huan DaiMau-Fu GaoYasuo NakayamaTun-Wen PiTheodoros A. PapadopoulosHorng-Tay JengShu-Jung TangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kowsalya Arumugam Abhishake Goyal Hong-Ming Chen Jing-Huan Dai Mau-Fu Gao Yasuo Nakayama Tun-Wen Pi Theodoros A. Papadopoulos Horng-Tay Jeng Shu-Jung Tang Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
description	Abstract Using photoemission spectroscopy (PES), we have systematically investigated the behavior of polar organic molecule, chloroaluminum phthalocyanine (ClAlPc), adsorbed in the Cl-down configuration on the Ag(111) substrate at low temperature − 195 °C under UV irradiation with a range of different photon fluxes. Judging from the evolution of photoemission spectral line shapes of molecular energy states, we discovered that the Cl atoms are so robustly anchored at Ag(111) that the impinging photons cannot flip the ClAlPc molecules, but instead they crouch them down due to radiation pressure; we observe that the phthalocyanine (Pc) lobes bend down to interact with Ag atoms on the substrate and induce charge transfer from them. As photon flux is increased, radiation pressure on the Pc plane initiates tunneling of the Cl atom through the molecular plane to turn the adsorption configuration of ClAlPc from Cl-down to an upheld Cl-up configuration, elucidating an optomechanical way of manipulating the dipole direction of polar molecules. Finally, work function measurements provide a distinct signature of the resulting upheld Cl-up configuration as it leads to a large increase in vacuum level (VL), ~ 0.4 eV higher than that of a typical flat-on Cl-up configuration driven by thermal annealing.
format	article
author	Kowsalya Arumugam Abhishake Goyal Hong-Ming Chen Jing-Huan Dai Mau-Fu Gao Yasuo Nakayama Tun-Wen Pi Theodoros A. Papadopoulos Horng-Tay Jeng Shu-Jung Tang
author_facet	Kowsalya Arumugam Abhishake Goyal Hong-Ming Chen Jing-Huan Dai Mau-Fu Gao Yasuo Nakayama Tun-Wen Pi Theodoros A. Papadopoulos Horng-Tay Jeng Shu-Jung Tang
author_sort	Kowsalya Arumugam
title	Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
title_short	Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
title_full	Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
title_fullStr	Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
title_full_unstemmed	Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure
title_sort	optomechanical switching of adsorption configurations of polar organic molecules by uv radiation pressure
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2dc3236186354a0782f4f51cd5910f2a
work_keys_str_mv	AT kowsalyaarumugam optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT abhishakegoyal optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT hongmingchen optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT jinghuandai optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT maufugao optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT yasuonakayama optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT tunwenpi optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT theodorosapapadopoulos optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT horngtayjeng optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure AT shujungtang optomechanicalswitchingofadsorptionconfigurationsofpolarorganicmoleculesbyuvradiationpressure
_version_	1718379635295649792

Optomechanical switching of adsorption configurations of polar organic molecules by UV radiation pressure

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