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Monitoring Protein Adsorption with Solid-state Nanopores
Published on: December 2, 2011
Solid-state fluorescence study of naphthalene adsorption on porous material
Yuichi Tozuka1, Emi Tashiro, Etsuo Yonemochi
1Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoicho, Inage-ku, Chiba, 263-8522, Japan. ytozuka@p.chiba-u.ac.jp
Journal of Colloid and Interface Science
|November 18, 2005
Summary
Naphthalene adsorption on porous materials was studied. Pore size significantly influences naphthalene excimer formation, impacting its molecular environment and adsorption behavior on different materials.
Area of Science:
- Materials Science
- Physical Chemistry
- Spectroscopy
Background:
- Naphthalene adsorption on porous materials is crucial for applications like environmental remediation and chemical separation.
- Understanding the molecular interactions and adsorption mechanisms is key to designing effective porous adsorbents.
Purpose of the Study:
- To investigate the adsorption profile of naphthalene on porous materials using solid-state fluorescence spectroscopy.
- To determine the effect of pore size on naphthalene adsorption and excimer formation.
Main Methods:
- Solid-state fluorescence spectroscopy was employed to monitor naphthalene adsorption.
- Naphthalene was mixed with porous crystalline cellulose (PCC), octadecyl silane (ODS)-80A, and ODS-2 adsorbents.
- Adsorption amounts and fluorescence spectral patterns (excimer/monomer emission) were analyzed.
Main Results:
- Mixing naphthalene with PCC induced excimer emission, indicating a changed molecular environment.
- Naphthalene adsorption on ODS-80A and ODS-2 showed similar spectral patterns but different adsorption capacities (0.05 g/g and 0.024 g/g, respectively).
- Higher relative excimer emission intensity was observed for ODS-80A compared to ODS-2 at equivalent adsorbed naphthalene amounts.
Conclusions:
- The pore size of porous materials significantly affects naphthalene excimer formation on the surface.
- Adsorbent pore structure plays a critical role in dictating naphthalene's molecular behavior and adsorption efficiency.
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