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Electrospun PVA nanofibers doped with titania nanoparticles in plasmon-coupled fluorescence studies: An eco-friendly and cost-effective transition from 2D nano thin films to 1D nanofibers

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Abstract

We report the synthesis of electrospun PVA nanofibers doped with Titania nanoparticles (NPs) utilized in plasmon-coupled fluorescence studies to obtain augmented enhancements. Amongst the three NPs used for the study, the highest enhancements (~ 150-fold) was achieved utilizing TiCN-doped nanofibers. The high enhancements from nanofibers allowed us to compare it with 2D thin films. The nanofibers presented emission enhancements that are greater and highly polarized even at increased concentrations of PVA vis-à-vis thin films that show dual polarizations at higher concentrations of PVA. These results show that 1D nanofibers can be used as green & low-cost replacements to 2D nano thin films.

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Abbreviations

PVA:

Poly(vinyl alcohol)

NPs:

Nanoparticles

SPCE:

Surface plasmon-coupled emission

TiC:

Titanium carbide

TiN:

Titanium nitride

TiCN:

Titanium carbonitride

Ext. Cavity:

Extended cavity

SAED:

Selected area electron diffraction

XRD:

X-ray Diffraction

SEM:

Scanning electron microscopy

AFM:

Atomic force microscopy

Rh6G:

Rhodamine 6G

FS:

Free space

SPR:

Surface plasmon resonance

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Acknowledgments

The authors acknowledge the support from Tata Educational and Development Trust [TEDT/MUM/HEA/SSSIHL/2017-2018/0069-RM-db], DST-Technology Development Program [IDP/MED/19/2016] and DST-Inspire Fellowship [IF180392], Govt. of India. The authors thank Dr. Bebeto Rai for the study inputs and proof reading. The authors especially acknowledge SSSIHL-CRIF for extending the usage of the required instrumentation facility. Guidance from Bhagawan Sri Sathya Sai Baba is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Andhra Pradesh, 515134, India

    Sriram Rathnakumar & Venketesh Sivaramakrishnan

  2. STAR Laboratory, Central Research Instruments Facility, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Andhra Pradesh, 515134, India

    Seemesh Bhaskar, Pradeep Kumar Badiya, Venkatesh Srinivasan & Sai Sathish Ramamurthy

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  1. Sriram Rathnakumar
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  2. Seemesh Bhaskar
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  3. Pradeep Kumar Badiya
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Correspondence to Venkatesh Srinivasan or Sai Sathish Ramamurthy.

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Rathnakumar, S., Bhaskar, S., Badiya, P.K. et al. Electrospun PVA nanofibers doped with titania nanoparticles in plasmon-coupled fluorescence studies: An eco-friendly and cost-effective transition from 2D nano thin films to 1D nanofibers. MRS Communications 13, 290–298 (2023). https://doi.org/10.1557/s43579-023-00342-5

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