A Self-Assembled Peptide-Appended Naphthalene Diimide: A Fluorescent Switch for Sensing Acid and Base Vapors

Kousik Gayen; Kingshuk Basu; Nibedita Nandi; Krishna Sundar Das; Daniel Hermida-Merino; Ian W. Hamley; Arindam Banerjee

doi:10.1002/cplu.201900577

A Self-Assembled Peptide-Appended Naphthalene Diimide: A Fluorescent Switch for Sensing Acid and Base Vapors

Kousik Gayen, Kingshuk Basu, Nibedita Nandi, Krishna Sundar Das, Daniel Hermida-Merino, Ian W. Hamley, Arindam Banerjee

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A histidine-containing bola-amphiphilic molecule (NDIP) containing a peptide-appended naphthalenediimide (NDI) forms fluorescent hydrogels in phosphate buffer and organogels with benzenoid solvents. These gels were characterized by several spectroscopic and microscopic techniques including FT-IR, HR-TEM, powder X-ray diffraction and small-angle X-ray scattering, UV-Vis and fluorescence studies. The gelator molecule exhibits no significant fluorescence in the xerogel state, while it shows a significant fluorescence (bright cyan) in the presence of volatile organic/inorganic acid vapors; this cyan color vanishes in presence of base (ammonia vapors). A reusable paper-strip-based method based on this self-assembled fluorescent material can be used to easily detect hazardous volatile acid and base vapors with the naked eye.

Original language	English
Pages (from-to)	1673-1680
Number of pages	8
Journal	ChemPlusChem
Volume	84
Issue number	11
DOIs	https://doi.org/10.1002/cplu.201900577
State	Published - 1 Nov 2019
Externally published	Yes

Keywords

fluorescence sensing
hydrogels
naphthalene diimides
peptides
self-assembly

ASJC Scopus subject areas

General Chemistry

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title = "A Self-Assembled Peptide-Appended Naphthalene Diimide: A Fluorescent Switch for Sensing Acid and Base Vapors",

abstract = "A histidine-containing bola-amphiphilic molecule (NDIP) containing a peptide-appended naphthalenediimide (NDI) forms fluorescent hydrogels in phosphate buffer and organogels with benzenoid solvents. These gels were characterized by several spectroscopic and microscopic techniques including FT-IR, HR-TEM, powder X-ray diffraction and small-angle X-ray scattering, UV-Vis and fluorescence studies. The gelator molecule exhibits no significant fluorescence in the xerogel state, while it shows a significant fluorescence (bright cyan) in the presence of volatile organic/inorganic acid vapors; this cyan color vanishes in presence of base (ammonia vapors). A reusable paper-strip-based method based on this self-assembled fluorescent material can be used to easily detect hazardous volatile acid and base vapors with the naked eye.",

keywords = "fluorescence sensing, hydrogels, naphthalene diimides, peptides, self-assembly",

author = "Kousik Gayen and Kingshuk Basu and Nibedita Nandi and {Sundar Das}, Krishna and Daniel Hermida-Merino and Hamley, {Ian W.} and Arindam Banerjee",

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doi = "10.1002/cplu.201900577",

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T2 - A Fluorescent Switch for Sensing Acid and Base Vapors

AU - Gayen, Kousik

AU - Basu, Kingshuk

AU - Nandi, Nibedita

AU - Sundar Das, Krishna

AU - Hermida-Merino, Daniel

AU - Hamley, Ian W.

AU - Banerjee, Arindam

PY - 2019/11/1

Y1 - 2019/11/1

N2 - A histidine-containing bola-amphiphilic molecule (NDIP) containing a peptide-appended naphthalenediimide (NDI) forms fluorescent hydrogels in phosphate buffer and organogels with benzenoid solvents. These gels were characterized by several spectroscopic and microscopic techniques including FT-IR, HR-TEM, powder X-ray diffraction and small-angle X-ray scattering, UV-Vis and fluorescence studies. The gelator molecule exhibits no significant fluorescence in the xerogel state, while it shows a significant fluorescence (bright cyan) in the presence of volatile organic/inorganic acid vapors; this cyan color vanishes in presence of base (ammonia vapors). A reusable paper-strip-based method based on this self-assembled fluorescent material can be used to easily detect hazardous volatile acid and base vapors with the naked eye.

AB - A histidine-containing bola-amphiphilic molecule (NDIP) containing a peptide-appended naphthalenediimide (NDI) forms fluorescent hydrogels in phosphate buffer and organogels with benzenoid solvents. These gels were characterized by several spectroscopic and microscopic techniques including FT-IR, HR-TEM, powder X-ray diffraction and small-angle X-ray scattering, UV-Vis and fluorescence studies. The gelator molecule exhibits no significant fluorescence in the xerogel state, while it shows a significant fluorescence (bright cyan) in the presence of volatile organic/inorganic acid vapors; this cyan color vanishes in presence of base (ammonia vapors). A reusable paper-strip-based method based on this self-assembled fluorescent material can be used to easily detect hazardous volatile acid and base vapors with the naked eye.

KW - fluorescence sensing

KW - hydrogels

KW - naphthalene diimides

KW - peptides

KW - self-assembly

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ER -

A Self-Assembled Peptide-Appended Naphthalene Diimide: A Fluorescent Switch for Sensing Acid and Base Vapors

Abstract

Keywords

ASJC Scopus subject areas

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