Three dye energy transfer cascade within DNA thin films

Abstract

An efficient cascade FRET was realized in solid state DNA-CTMA thin films using a three chromophore system without any covalent attachments. The extent of energy transfer from Cm102 to SRh was studied and found to improve eight-fold using the bridging dye Pm567.

Simultaneous binding of a cyclophane and classical intercalators to DNA: observation of FRET-mediated white light emission

“…[18][19][20][21][22][23][24] Moreover, the predictable secondary structure, unique binding sites for small molecules and the ability to control the spatial arrangement of chromophores with nanoscale precision make DNA an excellent scaffold for related applications in optoelectronic devices and sensors. [33][34][35][36][37][38][39][40][41][42][43][44] While many groups have used the interaction of chromophores with DNA in demonstrating DNA mediated white light emission, [18][19][20][21][22][23]45 there exists need for fundamental understanding on the structure-property correlation controlling the output of the light emission. 27,[29][30][31][32][33] This in turn is regulated by apparent binding constants and allosteric factors when multiple chromophores are involved.…”

FRET‐Mediated Amplified Spontaneous Emission in DNA–CTMA Complexes

“…[ 4,5 ] Due to the nanometer sensitivity of FRET, materials presenting an intrinsic nanoscale structuration are commonly used as hosts to impose a chromophore distribution for applications where one wishes to favor energy transfer. To date, the feasibility of triggering two or even three-step FRET process [ 13 ] has been demonstrated in this polymeric matrices but a precise understanding of the transfer process is lacking. The latter, a biopolymer rapidly gaining attention in the fi eld of photonics, [ 7 ] has been long studied in relation with FRET in both directions: using FRET as a means to detect structural changes in DNA [ 8 ] and profi ting from its natural scaffold to improve or control the transfer process.…”

Electrochemistry of deoxyribonucleic acid–cetyltrimethylammonium complex with considering O2 effect

“…Biological material based on deoxyribonucleic acid-cetyltrimethylammonium complex (DNA-CTMA) has been considered as the potential candidate material for the bioelectronics and biophotonics [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. CTMA is a kind of surfactant and often used to modify DNA sodium salt, which interacted with DNA helix statically.…”