The effect of different geometries of functional carbon nanofillers has been studied to understand the nature of enzymatic degradation of physically crosslinked hydrogels. The noncovalent interactions between polymer and fillers...
The significance of the configuration of a nanoscale functional surface on the texture of polymeric chain assemblies during electrospinning for controlled flexible scaffolds.
Quantum dots (QDs) have received great attention for development of novel fluorescent nanoprobe with tunable colors towards the near-infrared (NIR) region because of their unique optical and electronic properties such as luminescence characteristics, wide range, continuous absorption spectra and narrow emission spectra with high light stability. Quantum dots are promising materials for biosensing and single molecular bio-imaging application due to their excellent photophysical properties such as strong brightness and resistance to photobleaching. However, the use of quantum dots in biomedical applications is limited due to their toxicity. Recently, the development of novel and safe alternative method, the biomediated greener approach is one of the best aspects for synthesis of quantum dots. In this Chapter, biomediated synthesis of quantum dots by living organisms and biomimetic systems were highlighted. Quantum dots based fluorescent probes utilizing resonance energy transfer (RET), especially Förster resonance energy transfer (FRET), bioluminescence resonance energy transfer (BRET) and chemiluminescence resonance energy transfer (CRET) to probe biological phenomena were discussed. In addition, quantum dot nanocomposites are promising ultrasensitive bioimaging probe for in vivo multicolor, multimodal, multiplex and NIR deep tissue imaging. Finally, this chapter provides a conclusion with future perspectives of this field.
The fluorescent colour in biodegradable and biocompatible flexible polymer nanocomposite gels were modulated in order to insight into the interfacial interactions of functional scaffolds with metal ions. The hybrid nanomaterials...
Physically cross-linked gels have unique advantages of
repeated
swelling and shrinking of network structures, where the stability
of gels at the swelled phase, particularly under ionic conditions,
is extremely critical. In this study, it has been shown that functionalized
nanofillers and polar solvents can increase the network densities
of physically cross-linked gels with higher dimensional stability
by increasing the polar and electrostatic interactions. The characteristic
nonbonded interactions of CNTs with ionic solvents have been utilized
for the controlled swelling of toughened double-network gels as the
function of pH and time. The swelling of the overall gel morphology
is found to be important for the release of analytes; however, the
functional cross-sectional sites in the nanohybrids hold the key for
desorption kinetics. The selection of interactive functional moieties
in the nanohybrids and analytes has led to the development of highly
efficient and controlled release media. The electrostatic interaction
of analytes with functionally and dimensionally stable gels with controlled
porosity indicates a clear structure–property correlation,
which could be exploited to design and fabricate efficient drug delivery
vehicles and rapid surface decontaminants.
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