{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"context_keyed_representation_switching__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"context_keyed_representation_switching__chemistry_materials__CONSTRAINED_HIGH","decision":"PROPOSAL","abstention_reason":null,"proposal":{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"context_keyed_representation_switching__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"context_keyed_representation_switching__chemistry_materials__CONSTRAINED_HIGH","proposal_index":1,"version":0,"title":"Light-Keyed Dual-Enantiomer Molecularly Imprinted Membrane","problem":"A flexible batch purification line alternates between recovering the R and S enantiomers of one chiral compound but has space for only one membrane cartridge. A fixed chiral imprint preferentially retains only one enantiomer, while a static mixture of opposite imprints can expose both binding populations simultaneously, creating competitive retention and fraction carryover. The material therefore needs two incompatible, recoverable molecular-recognition geometries on the same porous substrate and a direct physical way to activate only the geometry appropriate to the current batch.","actors":["Batch purification operator","Materials scientist responsible for the membrane","Porous crosslinked membrane","R and S enantiomers in the feed","Wavelength-selective illumination source","Chromatographic assay instrument"],"observable_state":"The membrane's intrinsic photochromic absorbance identifies its current photostationary state. State-resolved breakthrough curves, adsorption isotherms, desorption fractions, and chiral analysis show whether the illuminated membrane preferentially retains R, preferentially retains S, enters a mixed state, or fails to recover a previous preference after cycling.","consequence":"Using the wrong or a mixed recognition geometry can retain the undesired enantiomer, release the desired enantiomer prematurely, contaminate collected fractions, and require cartridge replacement or reprocessing.","affected_objective":"Reversible enantiomer-selective separation on one reusable membrane while limiting cross-retention, carryover, and loss of selectivity after context switches.","intervention":"Fabricate a porous molecularly imprinted membrane whose covalent network contains bistable photoisomerizable crosslinks. Template the network so one reproducible photoisomeric conformation presents a chiral contact geometry favoring R and the other presents a different geometry favoring S. Illumination through one fixed wavelength band drives the R-selective material state; a second band drives the S-selective state. The crosslinked network stores both conformational minima, and changing wavelength physically isomerizes the crosslinks rather than rewriting the material. Intrinsic absorption provides a passive state indication. Saturating illumination and a predefined transition band guard against partial switching; flow is withheld in that ambiguous band as a nonessential safety wrapper.","structural_mapping":[{"archetype_element":"Shared Substrate Scope","domain_realization":"One covalently crosslinked porous membrane supplies the common pore architecture, mechanical support, fluid path, and receptor-bearing network for both separation contexts."},{"archetype_element":"Representation Portfolio","domain_realization":"Two persistent molecular-recognition maps are encoded: the spatial correspondence between R functional groups and cavity contacts in one photoisomeric conformation, and the incompatible correspondence favoring S in the other."},{"archetype_element":"Context Key Space","domain_realization":"Two validated illumination bands are explicit physical keys for the R-recovery and S-recovery states; intermediate spectra, insufficient dose, and out-of-range temperature constitute unknown context."},{"archetype_element":"Representation Selection Rule","domain_realization":"Wavelength-dependent photoisomerization changes crosslink geometry and selects which chiral arrangement the cavities physically present."},{"archetype_element":"Active Representation Indicator","domain_realization":"The photochromic crosslinks' state-dependent absorbance provides a direct material-state indication without analytical inference being required to create the binding effect."},{"archetype_element":"Inactive Representation Store and Isolation Boundary","domain_realization":"Covalent topology preserves the latent alternate cavity arrangement while the active isomeric conformation makes that alternate arrangement geometrically inaccessible or poorly complementary; ordinary adsorption does not rewrite either stored geometry."},{"archetype_element":"Switch Transition Guard","domain_realization":"Illumination continues to a measured photostationary absorbance plateau, and separations are not attributed to either map while absorbance remains in the transition band."},{"archetype_element":"Re-Entry Integrity Test","domain_realization":"After intervening use of the opposite state, the membrane is returned to the original wavelength and challenged with the same racemic probe to test recovery of its original enantiomer preference and capacity."},{"archetype_element":"Cross-Context Interference Probe","domain_realization":"Alternating R-state and S-state breakthrough tests measure whether conditioning, adsorption, or illumination in one state changes the other state's binding preference."},{"archetype_element":"Unknown-Context Fallback","domain_realization":"An ambiguous absorbance state is treated as nonselective: no product fraction is collected, and the membrane is re-illuminated to a validated plateau before reuse. This operational fallback protects material already in the apparatus but is not the source of selectivity."}],"mechanism_mapping":[{"mechanism_slug":"finite_state_map_selector","role":"The two photostationary molecular conformations act as bounded material states, with wavelength supplying the physical transition input.","counterfactual_removal":"Without reversible photoisomerization, the membrane would remain in one geometry or vary continuously without a dependable switch between recognition maps."},{"mechanism_slug":"context_to_map_routing_table","role":"The calibrated correspondence between illumination band and photochemical conformation routes the material to the R-selective or S-selective map.","counterfactual_removal":"If wavelength did not reproducibly determine conformation, the active recognition geometry could not be selected from the batch context."},{"mechanism_slug":"context_tagged_namespace_partition","role":"The two chiral contact arrangements occupy distinct conformational states of the same crosslinked cavity network rather than being simultaneously exposed static receptor populations.","counterfactual_removal":"If both arrangements remained concurrently accessible, competitive cross-binding would reduce the proposal to a mixed-imprint membrane rather than context-keyed switching."},{"mechanism_slug":"per_context_model_checkpoint","role":"Covalent crosslinks and bistable isomer geometry physically preserve both trained cavity arrangements for later reinstatement.","counterfactual_removal":"Without structural memory, cycling would relax or reconstruct the cavities, so the inactive map would not remain recoverable."},{"mechanism_slug":"active_map_status_indicator","role":"State-dependent optical absorption directly exposes which photoisomeric material state is present.","counterfactual_removal":"Binding could still switch, but operators could not distinguish a validated plateau from a mixed transition before committing a sample."},{"mechanism_slug":"hysteresis_and_debounce_filter","role":"A required absorbance plateau and saturating photon dose prevent brief spectral fluctuations from being treated as completed switches.","counterfactual_removal":"Short or noisy illumination could leave mixed isomer populations and produce unstable enantiomer preference."},{"mechanism_slug":"context_reinstatement_protocol","role":"Reapplying the prior wavelength physically restores the earlier cavity conformation without fabricating or reloading a separate membrane.","counterfactual_removal":"The system would support one-way conversion rather than recurring switching and reliable re-entry."},{"mechanism_slug":"cross_map_interference_regression_suite","role":"Alternating challenge cycles test whether illumination, fouling, or adsorption in either state degrades the other state.","counterfactual_removal":"The material might appear switchable after one cycle while concealing cross-state damage or re-entry failure."}],"causal_chain":["A wavelength band is applied directly to the membrane's photochromic crosslinks.","Photon absorption drives the crosslinks toward the corresponding photostationary isomeric state.","Crosslink isomerization changes the three-dimensional placement of receptor groups within the imprinted cavities.","One state makes the cavity contacts geometrically complementary to R while disrupting or occluding the competing S-oriented correspondence; the other state reverses those roles.","The selected enantiomer consequently forms more stable multivalent contacts and is retained relative to its mirror image under the same mobile-phase conditions.","Switching wavelength changes the material conformation while the covalent network preserves the latent alternate geometry.","Returning to the original wavelength reinstates the earlier recognition map.","Alternating breakthrough and desorption measurements reveal whether selection, isolation, and re-entry survived intervening use."],"baseline":"The primary baseline is a fixed-state molecularly imprinted membrane optimized for one enantiomer, requiring cartridge exchange when the desired product changes. A second baseline is a static dual-template membrane in which both receptor populations remain exposed and can compete for both enantiomers.","nearest_rivals":["Two separate fixed-imprint cartridges connected by a physical selector valve; this offers stronger isolation and is the main rival if cartridge duplication is acceptable.","A conventional chiral stationary phase operated with mobile-phase or temperature changes; this may achieve both separations without storing two explicit material maps.","Two fixed chiral sorbents placed serially and eluted in separate steps; this avoids conformational switching but adds pressure drop and carryover paths.","A static mixed-imprint membrane containing independent R- and S-binding sites; it is simpler but lacks reciprocal inactivation of the nonselected map."],"remaining_contrastive_claim":"The proposal is supported only if one membrane reproducibly reverses its enantiomer preference with the illumination key, suppresses the nonselected recognition geometry relative to a static mixed-imprint control, and recovers each prior preference after alternating cycles. It does not claim superiority to two separate cartridges, which remain the stronger rival when duplication and valve routing are acceptable.","authority_safety":{"decision_authority":"A laboratory principal investigator or designated materials-safety lead controls synthesis, illumination conditions, analyte choice, and progression beyond coupon testing.","authorized_first_step":"Fabricate only analytical-scale coupons and test them with a nonhazardous chiral model solute in an enclosed, temperature-monitored optical cell.","excluded_actions":["No production-line installation","No scale-up beyond analytical coupons","No use of toxic, bioactive, explosive, or environmentally persistent target compounds","No unshielded ultraviolet exposure","No product release or human-use purification","No interpretation of an ambiguous optical state as a valid separation state"],"halt_rollback":"Halt if illumination causes unsafe heating, detectable leaching, irreversible swelling, loss of membrane integrity, or failure to recover a prior state. Return the coupon to a dark, unloaded condition if stable; otherwise contain and dispose of it under the applicable materials protocol. Revert separation work to fixed-state control cartridges."},"negative_tests":{"strongest_counterevidence":"The membrane's optical spectrum switches while its enantiomer preference does not reverse, both enantiomers remain concurrently retained, or either preference decays after alternating cycles. That would show photochromism without preserved context-specific recognition maps.","problem_falsifier":"A single fixed cavity geometry and one bounded mobile-phase condition separate both requested product streams adequately, eliminating the need for persistent alternate recognition maps.","intervention_falsifier":"Across replicated coupons, state-specific uptake or breakthrough differences do not exceed assay repeatability, the preference direction fails to reverse with wavelength, or return to an earlier wavelength fails to restore its preregistered adsorption profile after cycling.","risks":["Photofatigue may erase one or both stored recognition states.","Illumination may heat the membrane, making temperature rather than conformation the apparent cause of changed retention.","Unreacted photochromic monomer or template may leach into collected fractions.","Partial photoisomerization may expose a mixed recognition state.","Repeated swelling, adsorption, and desorption may deform cavities irreversibly.","Strongly retained material may carry over between enantiomer contexts.","The static mobile phase may itself alter photoisomer stability or block light penetration."]},"next_evidence_step":"Prepare a bounded panel of four analytical coupons: the proposed dual-state imprint, a non-switchable dual-template control, and two fixed-conformation single-state controls. Using one nonhazardous racemic model analyte, measure photoisomer absorbance, temperature, equilibrium uptake, breakthrough, and desorption under both illumination bands, then perform ten alternating illumination-and-challenge cycles. Preregister that evidence requires preference reversal beyond assay repeatability, no corresponding reversal from temperature-matched dark controls, and recovery of each initial state-specific profile after cycling; otherwise stop the candidate.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"No comparison with other proposals was performed under runtime isolation. Internally, this candidate is defined by reversible photochemical rearrangement of one imprinted material rather than software selection, reporting, incentives, or procedural enforcement.","revision_record":{"parent_version":null,"progress_targets_addressed":["Initial construction of a causally explicit chemistry-and-materials candidate","Explicit physical-substrate counterfactual","Bounded controls for optical, thermal, and re-entry explanations"],"conceptual_changes":[],"operational_changes":[],"evidence_changes":[],"claim_changes":[]},"substrate_contract":{"primary_allowed_process":"PHYSICAL_MATERIAL","counterfactual_independence":"The essential effect is photon-driven molecular isomerization that changes cavity geometry and therefore enantiomer-binding interactions. With all software, inference, dashboards, reporting, incentives, authorization rules, and procedural enforcement removed, illuminating the membrane at the two wavelengths still produces the material conformations and their associated adsorption behavior. Manual or automated handling can support safe operation but does not create the selectivity switch.","forbidden_channel_audit":"No algorithm, model, database, recommender, information router, or software feedback loop selects the binding map. Optical measurement only verifies state and is not the downstream actuator of selectivity. The flow-withholding rule, laboratory authority, and test protocol are safeguards rather than operative mechanisms. The causal path remains wavelength to photoisomerization to cavity rearrangement to differential molecular binding."}}}