Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 22, 2018
Previous Article Next Article

Ultraviolet light-, temperature- and pH-responsive fluorescent sensors based on cellulose nanocrystals

Author affiliations

Abstract

A novel CNC-g-P(AzoC6MA-co-DMAEMA) fluorescent nanosensor was synthesized by the atom transfer radical copolymerization (ATRP) reaction of AzoC6MA and DMAEMA with cellulose nanocrystals (CNCs) modified with 2-bromoisobutyryl groups (CNC-Br) as the initiators. The characterization of environmentally sensitive CNC-g-P(AzoC6MA-co-DMAEMA) fluorescent nanosensor was studied, and its responses to ultraviolet (UV) light, temperature and pH were investigated. Under irradiation of UV light, the CNC-g-P(AzoC6MA-co-DMAEMA) fluorescent nanosensor exhibited isomerization of molecular structures of azobenzene groups and reversible transformation of fluorescence intensity. Due to the temperature- and pH-responsive properties of P(AzoC6MA-co-DMAEMA) side chains in the graft copolymers, the microenvironment of azobenzene groups in the fluorescent nanosensors could be changed through adjusting the external temperature or pH, which led to a reversible change in the fluorescence intensity of the nanosensors. This type of simple, cheap, dispersible and sensitive fluorescent nanosensor has potential advantages of in situ detection and monitoring of temperature or pH in organisms or water.

Graphical abstract: Ultraviolet light-, temperature- and pH-responsive fluorescent sensors based on cellulose nanocrystals

Back to tab navigation

Publication details

The article was received on 21 Apr 2018, accepted on 02 May 2018 and first published on 03 May 2018


Article type: Paper
DOI: 10.1039/C8PY00613J
Citation: Polym. Chem., 2018,9, 3098-3107

  •   Request permissions

    Ultraviolet light-, temperature- and pH-responsive fluorescent sensors based on cellulose nanocrystals

    W. Yuan, C. Wang, S. Lei, J. Chen, S. Lei and Z. Li, Polym. Chem., 2018, 9, 3098
    DOI: 10.1039/C8PY00613J

Search articles by author

Spotlight

Advertisements