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Multistep Wavelength Switching of Near‐Infrared Photoluminescence Driven by Chemical Reactions at Local Doped Sites of Single‐Walled Carbon Nanotubes
Author(s) -
Shiraki Tomohiro,
Shiga Tamehito,
Shiraishi Tomonari,
Onitsuka Hisashi,
Nakashima Naotoshi,
Fujigaya Tsuyohiko
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201805342
Subject(s) - imine , carbon nanotube , photoluminescence , nanomaterials , doping , photochemistry , aldehyde , dissociation (chemistry) , materials science , chemistry , chemical reaction , nanotechnology , chemical engineering , organic chemistry , catalysis , optoelectronics , engineering
Local chemical functionalization is used for defect doping of single‐walled carbon nanotubes (SWNTs), to develop near‐infrared photoluminescence (NIR PL) properties. We report the multistep wavelength shifting of the NIR PL of SWNTs through chemical reactions at local doped sites tethered to an arylaldehyde group. The PL wavelength of the doped SWNTs is modulated based on imine chemistry. This involves the imine formation of aldehyde groups with added arylamines, imine dissociation reaction, exchange reaction of bound arylamines in the imine, and the Kabachnik–Fields reaction of imine groups using diisopropyl phosphite. Using doped sites as a localized chemical reaction platform can exploit the versatile molecularly driven functionality of carbon nanotubes and related nanomaterials.