Poly(4-vinylaniline)/polyaniline bilayer functionalized bacterial cellulose membranes as bioelectronics interfaces

Rebelo, Ana M. Rodrigues; Liu, Yang; Liu, Changqing; Schäfer, Karl‐Herbert; Saumer, Monika; Yang, Guang

doi:10.1016/j.carbpol.2018.10.017

Cited by 21 publications

(25 citation statements)

References 73 publications

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“…This is attributed to the reduced charge carrier scattering 50 , along with a higher charge carrier mobility that facilitates the doping process 51 . In our previous study 37 , we showed that PVAN promoted the growth of 1D PANI nanostructures instead of the typical random and irregular 3D PANI agglomerates, which was attributed to the surfactant effect of PVAN.…”

Section: Discussionmentioning

confidence: 86%

“…BC/PVAN/PANI synthesis was completed in three steps as described in our published work 37 and schematically exemplified in Fig. 1.…”

Section: Preparation Of Bc/pvan/pani Compositesmentioning

confidence: 99%

“…More details on the procedure can be found in our most recent study 37 . respectively, and cell nuclei were observed with DAPI (blue).…”

Section: Cell Viabilitymentioning

confidence: 99%

“…However, PANI grown directly on BC nanofibrils tends to form denser clusters covering BC nanofibril network, which can prevent the full conductivity range being achieved for the composites, along with good mechanical integrity of the PANI coating. To overcome such limitations, PANI can be covalently grafted onto BC nanofibrils with the aids of a poly(4-vinylaniline) (PVAN) interlayer, resulting in an uniform distribution of the nanorod-like PANI on BC, as bespoken grafted structures in our previous published work 37 . The optimal fabrication of flexible and electrically conductive cellulose paper sheets with versatile properties has been validated with the presence of PVAN interlayer, that is also expected to contribute to an enhancement of cell adhesion owing to a more homogeneous nanostructured PANI-based coating of BC substrate [37][38][39] .…”

Section: Introductionmentioning

confidence: 99%

“…To overcome such limitations, PANI can be covalently grafted onto BC nanofibrils with the aids of a poly(4-vinylaniline) (PVAN) interlayer, resulting in an uniform distribution of the nanorod-like PANI on BC, as bespoken grafted structures in our previous published work 37 . The optimal fabrication of flexible and electrically conductive cellulose paper sheets with versatile properties has been validated with the presence of PVAN interlayer, that is also expected to contribute to an enhancement of cell adhesion owing to a more homogeneous nanostructured PANI-based coating of BC substrate [37][38][39] . BC/PVAN/PANI nanocomposites synthesis was initially accomplished via surfaceinitiated atom transfer radical polymerization (SI-ATRP) followed by in situ chemical oxidative polymerization (COP) of aniline.…”

Section: Introductionmentioning

confidence: 99%

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Poly(4-vinylaniline)/Polyaniline Bilayer-Functionalized Bacterial Cellulose for Flexible Electrochemical Biosensors

Rebelo¹,

Liu²,

Schäfer

et al. 2019

Langmuir

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Bacterial cellulose (BC) nanofibril network is modified with an electrically conductive polyvinylaniline/polyaniline (PVAN/PANI) bilayer for construction of potential electrochemical biosensors. This is accomplished through surface-initiated atom transfer radical polymerization of 4-vinylaniline, followed by in situ chemical oxidative polymerization of aniline. A uniform coverage of BC nanofiber with 1D supramolecular PANI nanostructures is confirmed by FTIR, XRD and CHN elemental analysis. Cyclic voltammograms evince the switching in the electrochemical behavior of 2 BC/PVAN/PANI nanocomposites from the redox peaks at 0.74 V, in the positive scan and at-0.70 V, in the reverse scan, (at 100 mV.s-1 scan rate). From these redox peaks, PANI is the emeraldine form with the maximal electrical performance recorded, showing charge-transfer resistance as low as 21 Ω and capacitance as high as 39 μF. The voltage-sensible nanocomposites can interact with neural stem cells (NSCs) isolated from subventricular zone (SVZ) of the brain, through stimulation and characterization of differentiated SVZ cells into specialized and mature neurons with long neurites measuring up to 115±24 μm length after 7 days of culture without visible signs of cytotoxic effects. The findings pave the path to the new effective nanobiosensor technologies for nerve regenerative medicine, which demands both electroactivity and biocompatibility.

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Section: Discussionmentioning

confidence: 86%

“…BC/PVAN/PANI synthesis was completed in three steps as described in our published work 37 and schematically exemplified in Fig. 1.…”

Section: Preparation Of Bc/pvan/pani Compositesmentioning

confidence: 99%

“…More details on the procedure can be found in our most recent study 37 . respectively, and cell nuclei were observed with DAPI (blue).…”

Section: Cell Viabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Poly(4-vinylaniline)/Polyaniline Bilayer-Functionalized Bacterial Cellulose for Flexible Electrochemical Biosensors

Rebelo¹,

Liu²,

Schäfer

et al. 2019

Langmuir

Self Cite

View full text Add to dashboard Cite

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Nano‐Structures as Bioelectronics for Controlled Drug Delivery

Dastidar

Ghosh

Chakrabarti

2021

Nanopharmaceutical Advanced Delivery Systems

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Insights into Hierarchical Structure–Property–Application Relationships of Advanced Bacterial Cellulose Materials

Chen

et al. 2023

Adv Funct Materials

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Bacterial cellulose (BC) is an environmentally friendly biomaterial that is widely investigated because it possesses a unique hierarchical nanofiber network structure as well as extraordinary performance. In this review, the formation of the BC hierarchical nanofiber network structure from the perspective of biosynthesis is illustrated based on its basic chemical and crystal structure. Moreover, the design and processing of BC-based advanced materials through biosynthesis, physical, and/or chemical modification are also reviewed. The intrinsic characteristics of BC, derived from its hierarchical structure, are analyzed to understand its structure-property-application relationships. The applications of advanced BC-based materials are reviewed, such as high-strength structural materials utilizing the properties of nanofibers, energy conversion and storage, bioelectronic interfaces, environmental remediation, and thermal management applications utilizing the ion transport properties and 3D network structures of these materials. In addition, the authors also offer their opinions and potential future research directions for sustainably developing BC-based materials.

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Poly(4-vinylaniline)/polyaniline bilayer functionalized bacterial cellulose membranes as bioelectronics interfaces

Cited by 21 publications

References 73 publications

Poly(4-vinylaniline)/Polyaniline Bilayer-Functionalized Bacterial Cellulose for Flexible Electrochemical Biosensors

Poly(4-vinylaniline)/Polyaniline Bilayer-Functionalized Bacterial Cellulose for Flexible Electrochemical Biosensors

Nano‐Structures as Bioelectronics for Controlled Drug Delivery

Insights into Hierarchical Structure–Property–Application Relationships of Advanced Bacterial Cellulose Materials

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