Emerging Complexity in Supramolecular Systems
Révision datée du 20 janvier 2012 à 06:03 par Collet (discussion | contributions) (Page créée avec « ;'''Introduction''' Complexity can be defined as '''C = M*I*I''' ''M: Multiplicity'' # One single molecule can present several properties e.g. Multiplicity of binding sites... »)
- Introduction
Complexity can be defined as C = M*I*I
M: Multiplicity
- One single molecule can present several properties e.g. Multiplicity of binding sites, number of energy levels....
- Mutiplicity of components: number of components (molecular) /constituents (supramolecular) in the system
I: Interaction
- Complentaries of shapes, of charges, of energy levels (Program writing / reading)
- Thermodynamic and kinetic of the interaction (reversibility, lability), covalent / non-covalent bonds, short-range/long-range
- Interactions of molecules with their environments (possibly in flux of energies far from equilibrium)
I: Integration
- Collective structuring
- In space: From sub-nano, to meso, to macro
- In time: Modulation of structures, oscillations
- Emergence of new properties because of the network topologies (feedback loops)
- Emergence of new functions
- Keywords
- Dynamic systems, Adaptive behaviour, Molecular evolution, Smart functional systems, Information-gaining systems
- Grand challenges
- Designing supramolecular systems able to generate complexity
- Reaching emergent properties in complex supramolecular systems
- Producing applications from complex supramolecular systems – societal implications
- Teaching complex systems in chemistry (Strasbourg Erasmus Mundus)
- Participants
- Nicolas Giuseppone, Mario Ruben, Mihail Stadler, Franck Hoonakker, Emilie Moulin, Jean-Marc Planeix, Mourad Elhabiri, (Ali Trabolsi)
1. How to design supramolecular systems able to generate complexity
Specificity of interactions and integrations
- From bimolecular recognition (host-guest) to large self-assemblies
- Hierarchy of self-assemblies
Dynamics is important and can take place at the three levels M, I, and I in time and space
- Conformational Dynamic
- Constitutional dynamic: reversibility of the structure of the systems components
- Network dynamics in coupled reactions
- Reversible dynamics at the three levels allow adaptation
Reversibility is an important requirement for evolvability
- Creates stocastic behavior for exploration of phenotypes
- Generate adaptativity by "mutations" which are driven by internal, or environmental parameters (e.g. stimuli, effectors)
Cooperativity is part of the integration processes which is important for modulations
- Allosteric effects
- Long range interactions and colective behaviors (e.g. phase transitions)
- Auto-catalysis and cross-catalysis
- Cooperativity allows emergence
2. What are the emerging properties of complex supramolecular systems
Diversity
Selection
Evolution
New functions
Open questions
- Is supramolecular complexity (one of the) the support to produce thinking matter?
- If yes, is this pathway continuous or does it present at one point a strong nonlinearity in evolution? Information/consciousness?
3. What are the applications and societal implications of complex supramolecular systems
Medicine
- Drugs
- Transfections - Delivery
- Imaging
Cellular biology
- Understanding of the construction of molecular networks
- Understanding protein foldings
- Biomimetic behaviors
Environmental sciences
- CO2 capture
- Water purification
Chemistry and materials
- Catalysis
- Organic electronics
- Solar cells
- Self-healing materials
- Smart materials (responsive/adaptive)
- Molecular motors
- Information processing and engineering