green chemistry and nanotechnology dr. philippe … of birth: march 2nd 1982. place of birth:...
TRANSCRIPT
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Dr. Philippe SAINT-CRICQ-RIVIEREフィリップ サンクリクリヴィエル
JSPS fellowSchool of Engineering
Department of Chemical System EngineeringOkubo-Shimojima Laboratory
Green Chemistry and Nanotechnology
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Married
Two cats
Motorcycle
Kawasaki GPZ 500s
Date of birth : March 2nd 1982
Place of birth : Bordeaux (don't like wine, except white)
Nationality : French (don't like cheese)
Blood type : A
No religion
No political tendancies
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2h
1h
Born in Bordeaux
Move to Pau
Graduated from University of Pau
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France-フランス Japan-日本
60 millions inhabitants543 965 km2
Density: 116/km2
127 millions inhabitants377 944 km2
Density: 337/km2
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France-フランス Japan-日本
Elementary school
Secondary school
High school
6
11
15
18
中学校
小学校
高校
6
12
15
18
exam
exam
baccalauréat
センター
What about school?
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France-フランス Japan-日本
Bachelor
Master
Ph.D
18
21
23
26
Bachelor
Master
Ph.D
18
22
24
27
And University?
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1) It helps you to build up your brain
Logic
Critical mind
Knowledge
論理、筋道
一隻眼
知識
2) I love doing experiments!!
5) You can become famous… 有名
4) You never stop learning
3) Try to explain life
Why do I like Science?
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It’s far away from France!!
Famous for Science (東大 = Top 10)
I love Mangas 漫画が好きです
Why Japan?
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Cinema
Poker
What are my hobbies?
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Football
Steven Gerrard Wayne Rooney Ryan Giggs Denis Bergkamp
My Favourite players
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Let’s talk about Nanotechnology…
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1) Presentation of Universe scale
2) Focus on nanoworld
3) Examples of nano objects in everyday life
4) My contribution to the nanoworld
Part1: General basics on Nanoworld
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universcale
10 billion = 10 000 000 000 = 1010
1 light year = 9 460 730 472 580,8 km
Light speed = 300 000 000 m/s
10 billion light years = 100 000 000 000 000 000 000 000 km !!!
Extreme limits of the Universe
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A group of galaxies
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Our galaxy: The Milky Way
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MercuryVenusEarthMarsJupiterSaturnUranusNeptunePluto
The solar system
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The Sun
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The earth
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Biggest object on earth
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Human scale
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Small insects
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Microscopic world
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Bacteria
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Beginning of the nanoworld…
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My working scale!!!
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So small…
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Earth Soccer Ball Nanoparticle
Scale (again!)
Same ratio between earth/soccer ball and soccer ball/nanoparticle!!!
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Richard Feynman (Nobel prize in Physics, 1965):“There is plenty of room at the Bottom”Caltech 1959
1981 Scanning tunneling microscope (STM)1985 Fullerenes (buckyballs) 1986 Atomic force microscope (AFM)1991 Nanotubes2004 microprocessor (<100 nm)
Nanoworld for scientists
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Ipod nanoEx: Memory storage
Thousands of object using nanotechnology
Japanese objects
Ain Supplio Pencil
Aroma molecules are encapsulated into nanocapsules
When writing the fragrance pops out of the nanocapsules
Nanotechnology in everyday life
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Hitachi R550ET5X fridge
Antibacterial nano filtration
Prevent from bacteria
Maruman Golf clubs
Nanomaterials based on iron and titaniumensure better sensations
Nanotechnology in everyday life
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Lithium-ion battery (Toshiba)
Nanoparticles prevent from reduction of organic electrolyte when recharging
Nanotechnology in everyday life
Longer life battery, better efficienc
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Nikon lenses
Antireflective coating based on nano crystals
Sanyo organic electroluminescent displays (OEL)
Nano arrangements of molecules
Nanotechnology in everyday life
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Toto sanagloss toilets
Special coating that helps clean your toilet with every flush!!
Nanotechnology in everyday life
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Nanoceuticals Slim Shake Chocolate
Nanoclusters of cocoa that can penetrate the cells and enhance the Taste and benefits of cocoa.
American Objects
Nanotechnology in everyday life
cocoa
cocoa
cocoa
cocoa
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Nanomaterials are everywhereImpossible to imagine the future without them
Conclusion
What about my work in this research field?
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1) Nanoparticles
2) Green Chemistry (?)
3) Silica
4) Silver
Part 2: Research field
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Chemistry =
Toxic products
Bomb
Dangerous/crazy
Mystrerious
じゃない!!
Green chemistry, what is that?
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Use of non toxic solvent
Minimize energy requirements
Water instead of organic solvent(benzene, chloroform…)
Low temperature reactions
Use of “natural” energy
Synthesis of nontoxic substancesMaterials harmless for the environment or humans
Green chemistry, what is that?
GreenChemistry
=
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Use of oxygen from air to perform oxidation reactions
Use of natural light to perform these reactions
Synthesis of nanoparticles that are biocompatible and environment friendly
Air = N2 (80%) + O2 (20%)
The sun is a big source of energyLight=
Energy
Sand = Silica Silica nanoparticles
What is my contribution?
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Nosocomial infections (caught at the hospital because of resistant bacteria)
Mutations make them stronger and resistant to drugs
Use other techniques to kill these bacteria
Bleach (strong oxidizing agent)
Ozone treatment
Power of lightand oxygen
The bacteria problem
O=O=O
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NR/Water/ICPTES
dip or spin coating
drying
powder
film
TEOS/Water/Lysine1/176/0.02
24h, 500 rpm333 K
41
Preparation of the product
Analysis
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Analysis of the productScanning electron microscopy (SEM)
Picture of the glass slide Picture of the glass slide (cut)
Remind: width of 1 hair = 50 μm…
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E.Coli ATCC 25922 Cultured on Luria-Bertani agar plate (LB)
10 mL saline solution108 CFU/mL (colony forming unit)
Dilution to 106 CFU/mL
100 μL
Sterile plastic box(time = x hours)
film “Blank”
5 mLPBS 1x
10 μL24 h, 37°C
10 μL24 h, 37°C
Petri dish
counting counting
Antibacterial Test
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98% of bacteria were killed, even on a cloudy day!!!
Antibacterial Test
or = OK
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20 s, 500 W
Water = 10 gAgNO3 = 4 mgSucrose = 1 g
AgNP c.a. 22 nm1
50 nm
Synthesis of silver nanoparticles
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Thank you for your attention…
…and for your patience