Difference between revisions of "User:Moira M. Esson/Notebook/CHEM-581/2012/10/26"

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(Crosslinking)
(Crosslinking)
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| align="center" style="background:#f0f0f0;"|'''Amount of 0.2M sodium bicarbonate used(mL)'''
 
| align="center" style="background:#f0f0f0;"|'''Amount of 0.2M sodium bicarbonate used(mL)'''
 
| align="center" style="background:#f0f0f0;"|'''Amount sodium bicarbonate solution saved(mL)'''
 
| align="center" style="background:#f0f0f0;"|'''Amount sodium bicarbonate solution saved(mL)'''
 +
| align="center" style="background:#f0f0f0;"|'''Mass of film after crosslinking(g)'''
 
|-
 
|-
| PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin||99.95||13||100||14||100||12
+
| PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin||99.95||13||100||14||100||12||1.4974
 
|-
 
|-
| PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin||101||12||98||13||99.8||12
+
| PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin||101||12||98||13||99.8||12||1.9251
 
|}
 
|}
  
*For the films listed below, the films were placed in a 6M
+
*For the films listed below, the films were placed in a 6M NaCl solution at 70°C for ~1.5 hours
 
+
'''Crosslinked Films''':
 +
#PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl
 +
#PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl
 +
<br>
 +
'''Crosslinking information''':
 +
{| {{table}}
 +
| align="center" style="background:#f0f0f0;"|'''Films crosslinked'''
 +
| align="center" style="background:#f0f0f0;"|'''Amount of NaCl added(g)'''
 +
| align="center" style="background:#f0f0f0;"|'''Amount 6M NaCl solution used(mL)'''
 +
| align="center" style="background:#f0f0f0;"|'''Amount NaCl solution saved(mL)'''
 +
| align="center" style="background:#f0f0f0;"|'''Mass of film after crosslinking(g)'''
 +
|-
 +
| PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl||0.3576||100||12||1.7781
 +
|-
 +
| PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl||0.363||99||12||1.5672
 +
|}
 +
==Observations for crosslinking films==
 +
*PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl was shrunken, shriveled and was green in color before crosslinking
 +
*PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl shrunk, looked shriveled and was green in color before crosslinking
 +
*PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin was flat, relatively shiny and pink in color before crosslinking
 +
*PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin was flat, shiny and pink in color before crosslinking
 +
*When added film to fixant solution both beakers of solution had some color leak out. Color of both beakers were yellowish/greenish. Film with 1mL GA not as colored. Film with 0.5mL GA seems to be a more vibrant color(leaking more)
 +
*NaCl solution with film with 0.5mL GA had very slight leaking(slight discoloration of solution very light green). Coloration of solution was occurring very gradually
 +
*Both films after fixant solution were a vibrant green color(like jolly rancher green). Film with 1.0mL GA was a darker/ more vibrant green
 +
*Films placed in 1% aqueous HCl soltn. both started to have color leak out
 +
*1.0mL GA+HCl film when placed in the 6M NaCl solution leaked very minimally(solution looks very faintly green). Much less in comparison to 0.5mL GA.
 +
*0.5mL GA+HCl film after 1hr. and 15min. heated , remained bright green color. Stored in H<sub>2</sub>O. After adding H<sub>2</sub>O, film turned into a pink color(darker pink on edges) 
  
 
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Revision as of 14:42, 10 November 2012

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Objectives

  1. Crosslink porphyrin films
  2. Run AA using film adsorption
  3. Prepare next highest porphyrin concentration solution. Then add salts to these higher porphyrin solutions
  4. Run UV-vis on film adsorption and porphyrin-salt solutions


Crosslinking

  • The general protocol for porphyrin film crosslinking described on 2012/09/14 was followed for the films listed below


Films Crosslinked:

  1. PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin
  2. PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin


Crosslinking information

Films Amount of fixant solution used to crosslink(mL) Amount fixant solution kept in vial(mL) Amount of 1% aqueous HCl solution used to crosslink(mL Amount HCl solution saved in vial(mL) Amount of 0.2M sodium bicarbonate used(mL) Amount sodium bicarbonate solution saved(mL) Mass of film after crosslinking(g)
PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin 99.95 13 100 14 100 12 1.4974
PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin 101 12 98 13 99.8 12 1.9251
  • For the films listed below, the films were placed in a 6M NaCl solution at 70°C for ~1.5 hours

Crosslinked Films:

  1. PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl
  2. PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl


Crosslinking information:

Films crosslinked Amount of NaCl added(g) Amount 6M NaCl solution used(mL) Amount NaCl solution saved(mL) Mass of film after crosslinking(g)
PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl 0.3576 100 12 1.7781
PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl 0.363 99 12 1.5672

Observations for crosslinking films

  • PVOH(22K) 1.02114g+0.5mL GA+1mL porphyrin+HCl was shrunken, shriveled and was green in color before crosslinking
  • PVOH(22K) 1.0067g+1mL GA+1mL porphyrin+HCl shrunk, looked shriveled and was green in color before crosslinking
  • PVOH(22K) 1.0073g+1.0mL GA+1mL porphyrin was flat, relatively shiny and pink in color before crosslinking
  • PVOH(22K) 1.05225g+1.0mL GA+1mL porphyrin was flat, shiny and pink in color before crosslinking
  • When added film to fixant solution both beakers of solution had some color leak out. Color of both beakers were yellowish/greenish. Film with 1mL GA not as colored. Film with 0.5mL GA seems to be a more vibrant color(leaking more)
  • NaCl solution with film with 0.5mL GA had very slight leaking(slight discoloration of solution very light green). Coloration of solution was occurring very gradually
  • Both films after fixant solution were a vibrant green color(like jolly rancher green). Film with 1.0mL GA was a darker/ more vibrant green
  • Films placed in 1% aqueous HCl soltn. both started to have color leak out
  • 1.0mL GA+HCl film when placed in the 6M NaCl solution leaked very minimally(solution looks very faintly green). Much less in comparison to 0.5mL GA.
  • 0.5mL GA+HCl film after 1hr. and 15min. heated , remained bright green color. Stored in H2O. After adding H2O, film turned into a pink color(darker pink on edges)