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Nanostructured, electroactive and bioapplicable materials

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List of Figures<br />

Figure 1-1. Three structure types proposed for silica-surfactant mesophases<br />

<strong>and</strong> the X-ray diffraction patterns: (a) MCM-41 (hexagonal); (b)<br />

MCM-48 (Cubic); (c) MCM-50 (Lamellar).............................................. 26<br />

Figure 1-2. Proposed schematics of the liquid-crystal templating (LCT)<br />

mechanism................................................................................................. 27<br />

Figure 1-3. IUPAC classification of physisorption isotherms. .................................... 28<br />

Figure 1-4. IUPAC classification of hysteresis loops.................................................. 29<br />

Figure 2-1. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of benzoin............................................. 52<br />

Figure 2-2. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of composite sample prepared<br />

with 20 wt % of benzoin (SB20)............................................................... 53<br />

Figure 2-3. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of composite sample prepared<br />

with 30 wt % of benzoin (SB30)............................................................... 54<br />

Figure 2-4. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of composite sample prepared<br />

with 40 wt % of benzoin (SB40)............................................................... 55<br />

Figure 2-5. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of composite sample prepared<br />

with 50 wt % of benzoin (SB50)............................................................... 56<br />

Figure 2-6. Typical patterns for the weight loss <strong>and</strong> its derivative over<br />

temperature during the pyrolysis of composite sample prepared<br />

with 60 wt % of benzoin (SB60)............................................................... 57<br />

Figure 2-7. Representative IR spectra of benzoin containing silica (SB40): (a)<br />

before template removal by heating at 150 °C; (b) after template<br />

removal by heating at 150 °C; (c) IR spectrum of pure silica gel............. 58<br />

Figure 2-8. Nitrogen adsorption-desorption isotherms at -196 °C for porous<br />

silica samples prepared with varied concentration of benzoin after<br />

template removal by heating at 150 °C. .................................................... 59<br />

xiii

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