@article {46318,
	title = {Dimedone-based rigid organic scaffold for organizing symmetrical helical peptide chains.},
	journal = {ChemistrySelect},
	volume = {4},
	year = {2019},
	month = {OCT },
	pages = {11518-11522},
	type = {Article},
	abstract = {<p>We describe herein design, synthesis and conformational investigations of polypeptides attached on a rigid dimedone template. Two identical peptide chains are attached on a single carbon containing dimedone as a scaffold. Dimedone assists in controlling the secondary interactions through strong intramolecular helical C-12 and C-15 membered bifurcated hydrogen bonding on both the peptide chains along with propagating the helical architecture of the peptide chains attached. There exists a C-6 hydrogen bonding for the single stranded peptides attached to dimedone. Extensive structural investigations involving single crystal X-ray diffraction, solution-state NMR and CD studies of oligopeptides have been undertaken.</p>
},
	keywords = {dimedone, Helical, hydrogen bonding, Peptides, template},
	issn = {2365-6549},
	doi = {10.1002/slct.201903087},
	author = {Madica, Krishnaprasad and Lakshmi, Jerripothula K. and Madhu, Suresh and Nadimpally, Krishna Chaitanya and Gonnade, Rajesh and Jagadeesh, Bharatam and Sanjayan, Gangadhar J.}
}
@article {48771,
	title = {Donor strapped perylene bisimide macrocycle and its lemniscate dimer with extended charge separation},
	journal = {Inorganic Chemistry Frontiers},
	volume = {10},
	year = {2023},
	month = {OCT },
	pages = {5099-5107},
	type = {Article},
	abstract = {<p>
	Macrocyclic structures are fascinating due to their unique design and capability to place chromophores in specific orientations, resulting in exciting optoelectronic properties. However, the synthetic challenges limit the broad exploration of such systems. Herein, we report a thiophene-diacetylene-based ring strapped perylene bisimide macrocycle and its notably different electron transfer features. Single-crystal analysis of the macrocycle pointed to the nearly orthogonal placement of donor-acceptor units, facilitating better electronic communication between them. Interestingly, introduction of an alkyl substituent on the peripheral thiophene ring opened the possibility of forming a higher oligomer macrocycle consisting of two strapped perylene bisimide units. Diffusion and two-dimensional NMR experiments provided insight into the structure of the figure-eight-shaped lemniscate dimer. Transient absorption measurements showed faster electron transfer and extended stabilization of the charge-separated state. The thiophene-diacetylene-based ring is a better donor unit to facilitate rapid electron transfer and extended charge separation in the macrocycle and its lemniscate dimer. The new macrocycle design enables the formation of higher analogs equally capable of stabilizing the charge-separated state. Donor-acceptor (D-A) macrocycle designs position the respective units to achieve ultrafast electron transfer precisely and an extended charge-separated state. Here, we report a D-A macrocycle and its lemniscate dimer molecule with exciting electron transfer features.</p>
},
	issn = {2052-4129},
	doi = {10.1039/d3qo01060k},
	author = {Veer, Sairam Dnyaneshwar and Goswami, Tanmay and Ravindranathan, Sapna and Gonnade, Rajesh and Kharbanda, Nitika and Ghosh, Hirendra N. and Babu, Sukumaran Santhosh}
}
