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Liquid Crystals
Presented by- Mr.Shreyas R.
Kulkarni
M.Pharm.(Pharmaceutics)
Roll no.-11
Guided by –Dr.Vishal V. Pande sir
HOD (Pharmaceutics,PG Dept.)
S.C.P.E.R, Kopargaon
123-03-2018
• Learning Objectives
1. Introduction
2. History
3. Classification
4. Nematic Liquid Crystals
5. Smectic Liquid Crystals
6. Cholesteric Liquid Crystals
7. Discotic Liquid crystals
8. Applications
9. Conclusion
10. University Questions
11. References
223-03-2018
Basic Terminology:
Mesophase- A Phase lying between solid &
liquid formed by changing amount of order in
sample.
Anisotropy- Object or substance having a
physical property which has a different value when
measured in different directions.
Isotropy- When the properties of material are the
same in all direction, the material is said to be
Isotropy.
23-03-2018 3
•Introduction
• Liquid Crystals are matter in state which has properties
between the convensional liquids and solids.
• It’s shows Anisotropy.
423-03-2018
• History
Anchen Scientist Otto Lehman
 On 3 May,1888 Lehman with
help of Freidrich Reinitzer
published their first result on
Liquid crystals.
523-03-2018
623-03-2018
• History
•In early of 1962 the RCA
Laboratories firstly used the
electronic display made with
liquid crystals.
•Ex. cyanobiphenyl
723-03-2018
LiquidCrystals
Lyotropic Liq.
crystal
Thermotropic Liq.
Crystal
Polymeric Liq.
Crystal
• Classification
823-03-2018
• In solvent
• Depends on Temperature,
Concentration, salt, alcohol
• Structures:
Lamellar, Hexagonal etc
For Ex. 1) Soap, it is the day to
day life example of lyotropic
liquid crystals.
2) Phospholipids (present in cell
membrane)
1. Lyotropic liquid crystals
23-03-2018 9
2.Thermotropic Liquid Crystals
• These are the liquid crystaline phases that
occures due to change in temprature range.
• Absence of solvent
• Rigid organic molecules
• Depends on Temperature
• Structures:
a) Smectic
b) Nematic
c) Cholesteric
1023-03-2018
These are basically
the mesogenic unit is
incorporated in the
polymeric molecule.
Ex. electrical and
mechanical parts,
food containers, and
any other applications
requiring chemical
inertness and high
strength.
3. Polymeric Liquid Crystals
1123-03-2018
Classification of Thermotropic Liq.
Crystal
1223-03-2018
Phases of Liquid Crystals
1323-03-2018
• Nematic Phase
• No possitional order
• Molecules in same
direction
• When temperatures is
incrase molecules will
be allign immediately
• In nematic crystal phase
molecules are arranged
paralell
• Ex. Cyanobiphenyl
1423-03-2018
• Smectic Phase
• This phase can be
reached at lower
temperatures than the
nematic phase.
• Not all positional
order is destroyed
when a crystal melts
to form a smectic
liquid crystal
1523-03-2018
• Cholesteric Phase
• Chiral nematic phase
• This phase exhibits the twisting of
the molecules perpendicular to the
director.
• Ex. Cholesterol Benzoate:LC 147C
1623-03-2018
Applications:
1) sensors
2) Thermometer
3) fashion fabrics that
change colour with
temperature
4) display devices
• Columnar
(Discotic phase)
Columnar (or
discotic) liquid
crystals are
different from the
previous types
because they are
shaped like discs
instead of long
rods.
17
Discotic phase
23-03-2018
23-03-2018 18
Liquid
Crystal
• Having 3 Dimensional Order
Smectic
A
• Having 0 Order
• Translational & Rotational Motion
Nematic
• Diffuse Out of the Latice Like Structure
• Layer like arrangement
Isotropic
• Having 0 Order as well
• Liquid
As Temperature Increases………
Applications
1923-03-2018
20
1.Pharma drugs as Liquid crystals.
Ex.
a) Nafodixine HCL.
b) Palmitolyl propranolol HCL.
c) Itraconazole.
2.Liquid Crystals as a
solubility enhancers.
Ex. Fenoprofen Calcium
• Pharmaceutical Application
23-03-2018
21
3. Novel approach for topical
drug deleivary
For eg. Zaltoprofen (an
NSAID)
4. Liquid Crystals in
Cosmaceuticals
23-03-2018
5. Liquid Crystal Thermometers
23-03-2018 22
• Liquid-crystal
thermometers use
liquid crystals that
change color in
response to
temperature
changes.
• Numbers on the
partitions indicate
temperatures
according to the
amount of heat
present.
•Flat screen television
•Laptop screens
•Switchable windows
• Other Uses of Liquid Crystals
2323-03-2018
24
• Digital Clocks
• Digital Calculator
23-03-2018
23-03-2018 25
Why DURACELL so much famous?
Conclusion
Today, Thanks to the scientists Reinitzer,
Lehmann and their followers, we know that
literally thousands of substances have a diversity
of other states. Some of them have been found
very usable in several technical innovations,
among which liquid crystal screens and liquid
crystal thermometers may be the best known.
The many applications of LCs in Pharma
industries made many revolutions, which
become very beneficial for the society.
2623-03-2018
Not yet…….
But Might be ask in this year!!!!
23-03-2018 27
28
•Reference
1. P. Gaikwad, Maya t. Desai. Liquid crystalline phase & its pharma applications
international journal of pharma research & review, dec 2013; 2(12):40-52
2. Pande v., Nayak s., Kendre p., Patil p. And sagar k. Fabrication and
characterization of zaltoprofen loaded Lyotropic liquid crystalline gel(received 20
august 2015) (accepted 20 november 2015) indian drugs 53 (03) march 2016
3.Theory of liquid crystals,http://www.springer.com/978-3-319-00857-8
4. Denis Andrienko, Introduction to liquid crystalsInternational Max Planck
Research School Modelling of soft matter,11-15 September 2006, Bad
Marienberg September 14, 2006
23-03-2018
29
5. Theory of liquid crystals
http://www.worldscientific.com
6. I. Tadwee, Dr.S. Shahi, V. Ramteke, I. Syed. Liquid
Crystals Pharmaceutical Application: A Review; Volume 1,
issue2 (2012), 06-11
7. A. P. Lodha, G. P. Jadhav and V. V. Pande . Liquid
Crystals As A Cubo-Hexagonal Topical Controlled Drug
Delivery System:Pharmacophore 2014, Vol. 5 (3), 430-
441 USA CODEN: PHARM7 ISSN 2229-5402
8.The Classification Of Liquid Crystal,
http://photonicswiki.org/images.
9.Application of liquid Crystal
http://saffron.pharmabiz.com/article/detnews.asp?articleid
=48939&sectionid=46
23-03-2018
23-03-2018 30

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Liquid crystals shreyas

  • 1. Liquid Crystals Presented by- Mr.Shreyas R. Kulkarni M.Pharm.(Pharmaceutics) Roll no.-11 Guided by –Dr.Vishal V. Pande sir HOD (Pharmaceutics,PG Dept.) S.C.P.E.R, Kopargaon 123-03-2018
  • 2. • Learning Objectives 1. Introduction 2. History 3. Classification 4. Nematic Liquid Crystals 5. Smectic Liquid Crystals 6. Cholesteric Liquid Crystals 7. Discotic Liquid crystals 8. Applications 9. Conclusion 10. University Questions 11. References 223-03-2018
  • 3. Basic Terminology: Mesophase- A Phase lying between solid & liquid formed by changing amount of order in sample. Anisotropy- Object or substance having a physical property which has a different value when measured in different directions. Isotropy- When the properties of material are the same in all direction, the material is said to be Isotropy. 23-03-2018 3
  • 4. •Introduction • Liquid Crystals are matter in state which has properties between the convensional liquids and solids. • It’s shows Anisotropy. 423-03-2018
  • 5. • History Anchen Scientist Otto Lehman  On 3 May,1888 Lehman with help of Freidrich Reinitzer published their first result on Liquid crystals. 523-03-2018
  • 7. • History •In early of 1962 the RCA Laboratories firstly used the electronic display made with liquid crystals. •Ex. cyanobiphenyl 723-03-2018
  • 9. • In solvent • Depends on Temperature, Concentration, salt, alcohol • Structures: Lamellar, Hexagonal etc For Ex. 1) Soap, it is the day to day life example of lyotropic liquid crystals. 2) Phospholipids (present in cell membrane) 1. Lyotropic liquid crystals 23-03-2018 9
  • 10. 2.Thermotropic Liquid Crystals • These are the liquid crystaline phases that occures due to change in temprature range. • Absence of solvent • Rigid organic molecules • Depends on Temperature • Structures: a) Smectic b) Nematic c) Cholesteric 1023-03-2018
  • 11. These are basically the mesogenic unit is incorporated in the polymeric molecule. Ex. electrical and mechanical parts, food containers, and any other applications requiring chemical inertness and high strength. 3. Polymeric Liquid Crystals 1123-03-2018
  • 12. Classification of Thermotropic Liq. Crystal 1223-03-2018
  • 13. Phases of Liquid Crystals 1323-03-2018
  • 14. • Nematic Phase • No possitional order • Molecules in same direction • When temperatures is incrase molecules will be allign immediately • In nematic crystal phase molecules are arranged paralell • Ex. Cyanobiphenyl 1423-03-2018
  • 15. • Smectic Phase • This phase can be reached at lower temperatures than the nematic phase. • Not all positional order is destroyed when a crystal melts to form a smectic liquid crystal 1523-03-2018
  • 16. • Cholesteric Phase • Chiral nematic phase • This phase exhibits the twisting of the molecules perpendicular to the director. • Ex. Cholesterol Benzoate:LC 147C 1623-03-2018 Applications: 1) sensors 2) Thermometer 3) fashion fabrics that change colour with temperature 4) display devices
  • 17. • Columnar (Discotic phase) Columnar (or discotic) liquid crystals are different from the previous types because they are shaped like discs instead of long rods. 17 Discotic phase 23-03-2018
  • 18. 23-03-2018 18 Liquid Crystal • Having 3 Dimensional Order Smectic A • Having 0 Order • Translational & Rotational Motion Nematic • Diffuse Out of the Latice Like Structure • Layer like arrangement Isotropic • Having 0 Order as well • Liquid As Temperature Increases………
  • 20. 20 1.Pharma drugs as Liquid crystals. Ex. a) Nafodixine HCL. b) Palmitolyl propranolol HCL. c) Itraconazole. 2.Liquid Crystals as a solubility enhancers. Ex. Fenoprofen Calcium • Pharmaceutical Application 23-03-2018
  • 21. 21 3. Novel approach for topical drug deleivary For eg. Zaltoprofen (an NSAID) 4. Liquid Crystals in Cosmaceuticals 23-03-2018
  • 22. 5. Liquid Crystal Thermometers 23-03-2018 22 • Liquid-crystal thermometers use liquid crystals that change color in response to temperature changes. • Numbers on the partitions indicate temperatures according to the amount of heat present.
  • 23. •Flat screen television •Laptop screens •Switchable windows • Other Uses of Liquid Crystals 2323-03-2018
  • 24. 24 • Digital Clocks • Digital Calculator 23-03-2018
  • 25. 23-03-2018 25 Why DURACELL so much famous?
  • 26. Conclusion Today, Thanks to the scientists Reinitzer, Lehmann and their followers, we know that literally thousands of substances have a diversity of other states. Some of them have been found very usable in several technical innovations, among which liquid crystal screens and liquid crystal thermometers may be the best known. The many applications of LCs in Pharma industries made many revolutions, which become very beneficial for the society. 2623-03-2018
  • 27. Not yet……. But Might be ask in this year!!!! 23-03-2018 27
  • 28. 28 •Reference 1. P. Gaikwad, Maya t. Desai. Liquid crystalline phase & its pharma applications international journal of pharma research & review, dec 2013; 2(12):40-52 2. Pande v., Nayak s., Kendre p., Patil p. And sagar k. Fabrication and characterization of zaltoprofen loaded Lyotropic liquid crystalline gel(received 20 august 2015) (accepted 20 november 2015) indian drugs 53 (03) march 2016 3.Theory of liquid crystals,http://www.springer.com/978-3-319-00857-8 4. Denis Andrienko, Introduction to liquid crystalsInternational Max Planck Research School Modelling of soft matter,11-15 September 2006, Bad Marienberg September 14, 2006 23-03-2018
  • 29. 29 5. Theory of liquid crystals http://www.worldscientific.com 6. I. Tadwee, Dr.S. Shahi, V. Ramteke, I. Syed. Liquid Crystals Pharmaceutical Application: A Review; Volume 1, issue2 (2012), 06-11 7. A. P. Lodha, G. P. Jadhav and V. V. Pande . Liquid Crystals As A Cubo-Hexagonal Topical Controlled Drug Delivery System:Pharmacophore 2014, Vol. 5 (3), 430- 441 USA CODEN: PHARM7 ISSN 2229-5402 8.The Classification Of Liquid Crystal, http://photonicswiki.org/images. 9.Application of liquid Crystal http://saffron.pharmabiz.com/article/detnews.asp?articleid =48939&sectionid=46 23-03-2018