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Related Concept Videos

Vapor Pressure Lowering03:28

Vapor Pressure Lowering

The equilibrium vapor pressure of a liquid is the pressure exerted by its gaseous phase when vaporization and condensation are occurring at equal rates: Dissolving a nonvolatile substance in volatile liquid results in a lowering of the liquid’s vapor pressure. This phenomenon can be explained by considering the effect of added solute molecules on the liquid's vaporization and condensation processes. To vaporize, solvent molecules must be present at the surface of the solution. The presence of...
Vaporization01:18

Vaporization

The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
Vapor Pressure02:34

Vapor Pressure

When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
Vapor Pressure of Fluid01:28

Vapor Pressure of Fluid

The vapor pressure of a fluid is a crucial concept in fluid mechanics, influencing phenomena such as boiling and cavitation. Vapor pressure refers to the pressure exerted by a vapor at a state of thermodynamic equilibrium with its corresponding liquid phase at a specific temperature. It represents the tendency of molecules to escape from the fluid surface into the vapor phase.
When a liquid is placed in a closed container with a small air space, and the space is evacuated, vapor molecules will...
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.

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Related Experiment Video

Updated: May 12, 2026

Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates
07:32

Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates

Published on: January 17, 2018

Vapor-based tri-functional coatings.

Hsien-Yeh Chen1, Ting-Ju Lin, Meng-Yu Tsai

  • 1Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan. hsychen@ntu.edu.tw

Chemical Communications (Cambridge, England)
|April 12, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel tri-functional coating using chemical vapor deposition (CVD) copolymerization. This advanced coating enables surfaces to gain multiple biological functions simultaneously through specific chemical reactions.

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Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers
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TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method
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TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

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Last Updated: May 12, 2026

Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates
07:32

Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates

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Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers
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Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers

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TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method
07:37

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

Area of Science:

  • Materials Science
  • Surface Chemistry
  • Biotechnology

Background:

  • Surface modification is crucial for imparting specific functionalities to materials.
  • Developing multi-functional surfaces often requires complex, multi-step processes.
  • Chemical Vapor Deposition (CVD) offers precise control over thin film fabrication.

Purpose of the Study:

  • To synthesize a novel tri-functional coating with multiple reactive sites.
  • To enable simultaneous conjugation reactions for diverse biological functions on surfaces.
  • To explore micro-structuring capabilities of the coating on various substrates.

Main Methods:

  • Synthesis of a tri-functional coating via CVD copolymerization.
  • Incorporation of acetylene, maleimide, and ketone anchoring sites.
  • Fabrication of micro-structured coatings on non-conventional surfaces.

Main Results:

  • The coating possesses three distinct anchoring sites: acetylene, maleimide, and ketone.
  • These sites synergistically participate in specific conjugation reactions.
  • The coating can be micro-structured, allowing for patterned surface functionalization.
  • Simultaneous impartation of distinct biological functions onto surfaces was achieved.

Conclusions:

  • The developed tri-functional coating offers a versatile platform for creating advanced biomaterials.
  • CVD copolymerization provides an effective method for precise surface engineering.
  • This approach enables the simultaneous development of multiple biological functionalities on micro-structured surfaces.