2. Charge transfer model in SCIHB

Suppose one end of a SCIHB, consisting only from resonant groups, is linked by hydrogen bond to charge donor (HD1 -) with an elevated electrochemical potential and on the other end of a system is linked to an acceptor (HA1) whose potential is low.

At the first stage  (initial state 1) donor  D1 yields its charge into SCIHB and attracts a proton:


а) initial state 1


HD1- ---> HQ1R=X1...HQ2R=X2...  ...HQnR=Xn...HA1 + H+



After the displacement of a proton from Q1 to D1 the group Q1–R=X1 passes to the state Q1=R–X1 and induces translocation of proton from Q2 to X1. The charge moves from D1 to A1, which is accompanies by the cooperative shift of protons and migration of double bond in the opposite direction, release of proton by D1 into the medium and uptake of aproton from the medium by A1. Electroneutrality is thus preserved (terminal state 1):


б) terminal state 1


H+ + D1 H...Q1=RX1H...Q2=RX2H...  ...Qn=RXnH ---> A1H



After D1 molecule is replaced by A2 and A1 by D2 a similar process of charge transfer can proceed in the opposite direction (initial state 2).


c) initial state 2


H+ + A2H...Q1=RX1H...Q2=RX2H...    Qn=RXnH <--- D2H



d) terminal state 2


HA2 <--- HQ1–R=X1...HQ2–R=X2...  ...HQnR=Xn...HD2 + H+



The process ends by transition to the terminal state 2.

After another interchange of donors and acceptors the cycle is repeated. Conditions of realization of the given model in biostructures are formulated and visually presented below.


Conditions of realization of the given model in biostructures



The comment

1.    Asymmetry of an arrangement of protons in SCIHB

In figure 1atoms of hydrogen are located in SCIHB asymmetrically

2.    Presence of the isolating environment for functioning SCIHB

These systems are shipped in structure isolating from an environment

3.    Possibility of effective change of donors and acceptors of charges

Inputs and outputs of  SCIHB are accessible to replaced donors and acceptors.

4.    Thermodynamic reversibility of charge transfer on SCIHB

Iit is provided with symmetry of duplicated structures and symmetry of initial and terminal conditions

Consequence of the given mechanism is alternative of work of the substructures containing SCIHB


Fig.1. Conditions of realisation of model of charges transfer in supramolecular biostructures.

а, в – initial states, б, г – terminal states.


From all conditions we will stop only on the first and the fourth which can form a basis for an explanation of the nature and a life origin.


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