green chemistry and nanotechnology dr. philippe … of birth: march 2nd 1982. place of birth:...

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

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

2h

1h

Born in Bordeaux

Move to Pau

Graduated from University of Pau

France-フランス Japan-日本

60 millions inhabitants543 965 km2

Density: 116/km2

127 millions inhabitants377 944 km2

Density: 337/km2


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?


Bachelor

Master

Ph.D

18

21

23

26

Bachelor

Master

Ph.D

18

22

24

27

And University?

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?

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?

Cinema

Poker

What are my hobbies?

Football

Steven Gerrard Wayne Rooney Ryan Giggs Denis Bergkamp

My Favourite players

Let’s talk about Nanotechnology…

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

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

A group of galaxies

Our galaxy: The Milky Way

MercuryVenusEarthMarsJupiterSaturnUranusNeptunePluto

The solar system

The Sun

The earth

Biggest object on earth

Human scale

Small insects

Microscopic world

Bacteria

Beginning of the nanoworld…

My working scale!!!

So small…

Earth Soccer Ball Nanoparticle

Scale (again!)

Same ratio between earth/soccer ball and soccer ball/nanoparticle!!!

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

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

Hitachi R550ET5X fridge

Antibacterial nano filtration

Prevent from bacteria

Maruman Golf clubs

Nanomaterials based on iron and titaniumensure better sensations


Lithium-ion battery (Toshiba)

Nanoparticles prevent from reduction of organic electrolyte when recharging


Longer life battery, better efficienc

Nikon lenses

Antireflective coating based on nano crystals

Sanyo organic electroluminescent displays (OEL)

Nano arrangements of molecules


Toto sanagloss toilets

Special coating that helps clean your toilet with every flush!!


Nanoceuticals Slim Shake Chocolate

Nanoclusters of cocoa that can penetrate the cells and enhance the Taste and benefits of cocoa.

American Objects


cocoa

cocoa

cocoa

cocoa

Nanomaterials are everywhereImpossible to imagine the future without them

Conclusion

What about my work in this research field?

1) Nanoparticles

2) Green Chemistry (?)

3) Silica

4) Silver

Part 2: Research field

Chemistry =

Toxic products

Bomb

Dangerous/crazy

Mystrerious

じゃない！！

Green chemistry, what is that?

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

=

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?

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

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

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…

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

98% of bacteria were killed, even on a cloudy day!!!

Antibacterial Test

or = OK

20 s, 500 W

Water = 10 gAgNO3 = 4 mgSucrose = 1 g

AgNP c.a. 22 nm1

50 nm

Synthesis of silver nanoparticles

Thank you for your attention…

…and for your patience

green chemistry and nanotechnology dr. philippe … of birth: march 2nd 1982. place of birth:...

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